thank you for making this video. Like a good professor should, you presented information clearly and without excessive detail. It will make it easier for a machinist's wife to understand why I'm irritable on "A-2 days".
I am to begin a course in Steel Fabrication at our local community college. I know nothing about steel - this was well presented and very helpful. I hope my instructors are as "tuned-in"!
Unlikely. In broad terms and with quite some simplistic generalizing, 1 Most instructors are journeypersons, who end up teaching. They are not teachers. Neither are they engineers, metallurgists or chemists. They never upgrade with college courses either, most colleges don`t pay for such upgrades for staff. They want to run the business with minimal spending. 2 Metal fabricators calculate and fab stuff out of 1 type of steel - or so. Their curriculum does not cover anything covered in my video. Instruction about metals is limited to a "Do this, this will work." approach. 3 Your instructors are likely to be seasoned pros who are in fact excellent Metal Fabricators. Enjoy math, have fun throwing some sparks, discover and learn beyond the textbook minimum. Thanks for watching.
Excellent presentation. This is an area that has very little coverage. I really appreciate your video on this fascinating subject. Thanks for taking the time to share this.
That was a good primer on steels. Thankyou. Seems increasingly difficult to find tools made from proper steels anymore - what is cheap sells the most; so we have ourselves to blame.
Thank you so much for taking the time to make this video! I'm an engineering student planning to do some garage projects, and I found this video extremely informative for that.
Excellent presentation. Well worth the time spent watching. Well spoken, easy to follow and understand mostly because of the "real world examples" that I have always seen but never understood . Thank you for taking the time to make this video. I am new here so perhaps I just haven't seen it yet but would like to see a video comparing the various high end fixed blade combat / bush knives.
One of the most informative primers on basic steels I have seen. I would recommend getting some help from someone with some videography and editing experience polish it up a bit. That said, very good information if one can stay with it. Thank you for your work.
+Idomake Thanks for watching. These videos were shot on-the-spot to replace the expanded set-up in class. Definitely not HD, not anything, just holding camera with one hand while trying to work with the other ... If you know anybody sponsoring educational development, send them this way.
Oooookaaay. Usual work flow is: find steel chunk, heat treat, draw knife design out, cut out shape, heat treat again, fit handle. I recommend a generic knife heat treatment sequence from Bob Loveless`s book Knifemaking p.57, 66: 1 Annealing Heat thoroughly to at least 1400 F (760 C) or past the Curie point, then let cool slowly in vermiculite or in an oven over a 12-hr period, not faster. After the grind, bevel and taper are done, 2 Heat up to same high temperature, quench in a barrel of cold oil, brine or water, clean blade, temper at 350 F (177 C) for 2 hours, then let cool in air to room temperature on its own. (No fans) It will be hard enough to hold a fine edge and not too brittle.
Thanks for the feedback. I very often indirectly refer back to this video or use terminology from it. For a recent example, check out: ruclips.net/video/PkT56_Yw_sk/видео.html
Excellent video. I like your presentation style, and precise technical language which you relate to everyday items around us, such as nails and tools, etc. I'm certainly enlightened by the information.
Superbly simple presentation of information and clearly delivered. Really enjoyed the tutorial. Learn't a lot. Now when I visit the foundry I will know what they are talking about 👍 Thanks for sharing.
Thank you so much for the detailed explanation. I believe you are very knowledgeable on the subject. This has helped me a great deal in choosing the material for my project.
you are great sir, the video is just worth saving and watching again and again. you channel is like an angle helping to learn the things. My Mechanical engineering materials course even failed to impart this much knowledge. watching first of your video. hope to get more of this kind on this channel. Thanks again.
Thanks for watching. Here is my playlist of related videos ruclips.net/p/PL9cPDQOOfTepp8sSTY7xoGsAmX5MUf-aS There is also a weldability spin on types of steels, ruclips.net/video/ZMgNY-hKp6o/видео.html and another playlist on steel and material failure ruclips.net/p/PLtsCbF7YOOwjLGSfkPQGBxoFkVyFNUotZ
What a brilliant informative down to earth lecture this is; i know i will keep watching this lecture over and over. By showing simple everyday products that we use you are makeing it easy to understand and are also managing to keep your audiance wanting more and more.
+wakefieldyorkshire I`ve got this: ruclips.net/video/fov8nPzOI6M/видео.html on another channel. Keep digging around, some are more geometric, some are more calculation focused, such as this:ruclips.net/video/L99lnAqVK1A/видео.html
Thank you very much..Nice and simple way of presenting ..very clear accent to understand for people from any area of World..Thanks.. Please do more videos like this about related subjects..more deeper..
I came here because i was watching an 80's wwf wrestling match and randy savage hit champion tito santana with a piece of "cold rolled steel" and knocked him out. I needed to find out what that ment
Fantastic video! I'm really interested in steel manufacture in industry, and am considering doing a Masters in Chemistry, possibly a PhD in Chemistry after the masters. What sort of opportunities do you see for someone with those qualifications in the Steel industry, or any related industries? Obviously i have been doing research, but all information can be valuable. Really good video, nice and comprehensive and well thought out, cheers
Good points. I'm still hoping for some quality teaching. At 69, retired from a non-trades area for 9 years, I'll need all the quality help I can get. Thanks for the feedback. I'm subscribed.
Hi dear sir will u attach data sheet which u showing in this video. It is very useful and easy to keep in mind after watching video. I will attach it with my notebook. While doing study i will use it for reference. Thank you.
Thanks a lot for this video! You presented very well many types of steel with good example and costs. What I miss for my project is the weldability of kinds of steel, the hardening (how hard is the particular steel after hardening and before) and the surface treatment. If you will have another video on that, that would be great!
Ivan Levels of hardness is produced by either (1) "cold work" - forming, bending, extruding, ... (2) "alloying" - carburizing, nitriding, high carbon steel, alloy steels, tool steels ... (3) "heat treatment" - quench & temper, anneal, Mild steel is weldable, anything alloyed (Carbon or anything) is tricky or impossible Some ideas are embedded here: ruclips.net/video/7wIySgYHW44/видео.html or here ruclips.net/video/yxAde_kh0LE/видео.html or here ruclips.net/video/39ahpcfWOEM/видео.html Just type in keywords "brittle" or "ductile" on my channel, see what comes up. I guess I can make a comprehensive video on what I just typed up, too. I`ll think up some visuals for it. Thanks for watching.
Steel manufacturing is somewhat limited to - steel. With chemistry degree I would shoot for a bigger pie, metallurgy. Bettering steel for extreme applications (space, underwater, military) has been tried from all angles, new discoveries are made in composite metals, like Ni-Ti, Bi-F, Pt-Cu - just throwing out some letters there. Invent a kichen knife or drill bit that never needs sharpening, body armor that weighs nothing or vehicle body that weighs nearly nothing. Play with the patterns.
What is the best steel for a pot to cook with if I wanted to buy the best? A lot of poor Hispanic people in NYC and other people have this low quality cookware that is not brand name. I find it in abandoned storage units and sorry yard sales. The metal sucks. I need to use a big pot to cook some pickled beets, and I happen to have one of these cheap big 'poor person' pots. Using one of these 'poor person' pots under heat, do you think sulfur and phosphorous will slightly leach into the food?
Interesting video ! Can you please explain the difference between H2o & oil quenching on steel ? I have also seen stamped on commercial type steel Truck frames that they should not be welded . In your opinion is there any way to properly weld a broken or cracked frame with that stamping ? Thank You .
During quenching the microstructure of steel changes. In quenching, red-hot steel`s microstructure called "austenite" turns into "martensite', regardless of the quenching medium. (Brine can also be used). Martensite is extremely hard and brittle. Water cools faster, oil cools a bit slower. In water quienching, more of the austenite forms martensite, and less of it forms pearlite - a softer form of steel. In oil cooling more pearlite forms and less martensite, so the finished steel is more ductile, less brittle. Welding changes the microstructure of steel around the weld, all martensite and pearlite will transition into "ferrite" a very soft and weak form of steel (nails, rebar, roof flashing). In addition, all the fine dissolved carbon runs and clumps together and solidifies into streaks and layers of graphite (same stuff in pencils). It just breaks right there, graphite has zero strength. Even if the weld is quenched somehow to form martensite, graphite layers will still form, it is not reversible and be a weak layer in the weld area. So: it can be welded, it just won`t hold. Like trying to weld the claw back on a hammer, pretty until you pull a nail and breaks 10 seconds into it.
NOBOX7 Laying steel in a charcoal bed for 4-10hrs will add a quarter of a single percent of carbon to the steel, to a depth of 5 -10 microinches, a 45sec oil quench does nothing. Added carbon only makes the steel harder at the depth of the added carbon, microscopic amount of surface hardening. Done on gear teeth and shafts commonly.
+Rudy Cambara Chemistry-wise 0.55% carbon is in the steel which makes it hardenable by heat treatment (power sharpening can destroy it), has some give and not super brittle. Will rust right away unless protected. It was probably cheaply cast in a mold with no sign of going through upset forging. Physics-wise a katana`s making, center of gravity and weight distribution are just us important.
So you mentioned that some tools are made of medium carbon steels if they are intended to be resharpened. But stainless steels and high speed steels are more durable so they may not need to be resharpened. If I wanted to make an axe head, what type/grade of steel do you suggest?
Axe head : Most durable materials: 316 stainless, a.k.a. 14-12 stainless, does not hold an edge Best edge retention material: tool steels, including high-speed steels, none of them are resistant to corrosion The edge has to withstand shock or impact loading without shattering and chipping. Medium carbon steel is a reasonable material, since having an edge is more important than resistance to corrosion. Axe needs to be made with forging, in a forging press under thousands of kg or lbs of pressure, at a forging temperature. Without the right method at the right temperature, an axe head could be shaped but won`t work as an axe. Just a decorative mantelpiece.
what do you think about the 80CrV2 Steel blade knife ?? for Survival - Bushcraft/Outdoor knife use ?? do you think is it durable or not ?? whats the best stone to sharpening the blade ?? 80CrV2 Steel knife blade is it weak or is it strong ?? thanks
Blade looks good on paper. Hope they use what they claim they do, hope they make it as it should. Here is how it looks like when they have a clue: ruclips.net/video/ppecDFaLsgE/видео.html Types of stones don`t matter much, particle uniformity does, together with particle hardness, particly crystaline structure and behavior. Here is my take on sharpening: ruclips.net/video/LytnUqXzTKE/видео.html
hey buddy ..video is really helpful.. can you make a video in which you describe all type of steel available in market and how they are known like hss 18-4-1
No, completely different steel numbering system. Its Carbon content is 0.12-0.18%, which is the mild steel range. EN36 is also alloyed with Ni and Cr which make the steel case hardening. EN36 is similar to SAE 3400-series Ni-Cr Alloy Steel. EN36 is suitable for roller and ball bearings of extra light section, aeroplane and motor crankshafts requiring hard surfaces for roller paths, connecting rods with case-hardened ends, as well as highly stressed gudgeon pins, gears and certain types of collets.
Hardening is basically a heat treating process, and can be applied to any type of steel, though some will get harder than others. But it is a different subject.
can i paint on steel ? i want to manufacture steel doors and windows with wooden like paints on it, but some people told me that steel cant hold paint for long ....
+Sahil Gupta I`m sure you can. It is also possible to paint steel. Needs proper surface prep: cleaning, pickling, priming, drying or possibly baking in a kiln between top coats, depending on paint type.
so wich kind/type of Steel is the Best for the Blade Knifes ?? wich one is the Strongest,Durable, and Impact Resistant Durability/Hardness ?? with non-rolling chip,edge ??wich one can retain the sharp edge for long time ?? and wich one is the best sharpener for it ?? waterstones ??diamonds , what else ?? thanks
Blade knife for what? Surgery? Bush whacking? Skinning deer? Chip carving? They all need completely different materials, completely different heat treatment, completely different blade geometry. I strarted a series on strength, durability, impact resistance, hardness and other things at: ruclips.net/p/PL9cPDQOOfTepp8sSTY7xoGsAmX5MUf-aS
is a Survival Knife Custom Made by a friend for Bushcraft and Outdoors , is a good Chopper aswel is made for heavy works ,out in the wilderness , chopping trees hunting , makeing shelter etc . Knife specs 7" blade(20cm) 3/16"( almost 5mm) thick. Steel is 80crv2 .he normalize the steel with 3 cycles. Do 1 heat treat and quench, and 3 cycles of tempering is that any good for it? thanks
donny ward digit 3 means "austenitic" stainless group, and 04 is just sequential, the 4th mix. Non-magnetic, soft & formable, excellent corrosion resistance. Sinks, faucets, strainers, kitchen stuff with no edge.See chemical composition and a bit about properties here: ruclips.net/video/0fKAFys9238/видео.html
donny ward 304 refers to class of SS,as it mentioned in the video about types of SS-Austenite,martensite and duplex SS.Austenites have 200 and 300 class,so if you find anywhere with the label of 304,316 that's austenitic stainless steel..304 is also widely known as 18/8 stainless steel,18% chromium and 8% nickel basically and used for surgical items,the other 316 is 18/10 chromium being 18% and nickel 10%,its used in kitchen cutlery and sinks...i think 200 class stainless steels are less corrosion resistant as compared to 300 class....and yes Austenite SS also makeup a huge part of Pressure parts in Industrial boilers preferably for making superheaters and reheater tubes capable of withstanding high pressures and temperatures.so Austenite SS makes majority of the SS produced in the market,swiss knife like shown in the video is strong and tough,its made up of martensite..duplex has roughly twice the strength of Austenites.
Thank you for this information. I frequently weld 308 formed plate and 308 pipe. I noticed my fitter's magnet wouldn't work on SS. I've been curious what determines how magnetic SS is. I'm guessing it's the amount of chromium in the steel. Thanks again for taking the time to respond.
donny ward Not the chromium. Austenite. Austenite is a special crystal, atoms locked in it won`t be magnetized. Now envision a cube, with atoms sitting at the corners + 1 in the middle of the cube. Austenite has this body-centered cubic crystal lattice, ferritic and martensitic steels are magnetic & are face-centered cubic.
Not sure if you still read these, but I had a quick question. The xx in the designations, such as 10xx, do they refer to the % of carbon? For example, 5160 would have Cr 0.80% since its 51xx. but then would it have 0.60% carbon? Or, for 1095, would it have 0.95% carbon? Just curious if I was understanding that correctly, and thanks for the answer!
+Mirage ™ "Durable" is not a standardized material property. But read on: Both the SAE 3000 series Cr-Ni steels and the SAE 6000 series Cr-V steels, say 3120 vs. 6120 are very similar in strength, elasticity, shear deformation, impact resistance, weldability, machinability. All their alloying elements are all under 5% total content. Both Cr and V are added to increase surface hardness. Ni makes steel less brittle in Arctic cold (under impact) and somewhat resistant to corrosion (depending on %). Cr-Ni steels are heat-treatable deep hardening steels. They make drive shafts, gears (tranny) and axles from it, so they are hard on the surface but give under shock loads. Cold service environment is likely. Low-carbon (under 0.35%) versions are weldable. Cr-V is used more for high speed cutting tools, springs and bearings where high hardness is required but also give under repeated loading cycles. V retards grain growth at elevated temperatures, so hot edges stay sharp longer. Hot service environment is likely. In hand tools at room temperature the differences don`t matter. It`s like eating pizza made with winter wheat and spring wheat. As long as they`re baked right, they work.
Excellent video explaining types of steel and their uses. Thank you!
Glad you liked it!
Bravo! Very well done. Thanks for sharing this with us.
Glad you enjoyed it!
Thanks for pairing real-life examples with the classifications. Very informative!
Thanks for watching
thank you for making this video. Like a good professor should, you presented information clearly and without excessive detail. It will make it easier for a machinist's wife to understand why I'm irritable on "A-2 days".
I am to begin a course in Steel Fabrication at our local community college. I know nothing about steel - this was well presented and very helpful. I hope my instructors are as "tuned-in"!
Unlikely. In broad terms and with quite some simplistic generalizing,
1 Most instructors are journeypersons, who end up teaching. They are not teachers. Neither are they engineers, metallurgists or chemists. They never upgrade with college courses either, most colleges don`t pay for such upgrades for staff. They want to run the business with minimal spending.
2 Metal fabricators calculate and fab stuff out of 1 type of steel - or so. Their curriculum does not cover anything covered in my video. Instruction about metals is limited to a "Do this, this will work." approach.
3 Your instructors are likely to be seasoned pros who are in fact excellent Metal Fabricators. Enjoy math, have fun throwing some sparks, discover and learn beyond the textbook minimum.
Thanks for watching.
Welding gear review from class: ruclips.net/video/ImrFAmzF5Ns/видео.html
Very Informative...like it
Excellent presentation. This is an area that has very little coverage. I really appreciate your video on this fascinating subject. Thanks for taking the time to share this.
Glad you enjoyed it!
Very entertaining and delightfully presented. Excellent and no bullshit at all.
That was a good primer on steels. Thankyou. Seems increasingly difficult to find tools made from proper steels anymore - what is cheap sells the most; so we have ourselves to blame.
Thank you so much for taking the time to make this video! I'm an engineering student planning to do some garage projects, and I found this video extremely informative for that.
excellent walk through and brush up. I'll be more alert now when looking at tools and equipment. thanks.
Loved the tangible examples, thanks +theoverengineer!
Excellent presentation. Well worth the time spent watching.
Well spoken, easy to follow and understand mostly because of the "real world examples" that I have always seen but never understood . Thank you for taking the time to make this video. I am new here so perhaps I just haven't seen it yet but would like to see a video comparing the various high end fixed blade combat / bush knives.
One of the most informative primers on basic steels I have seen. I would recommend getting some help from someone with some videography and editing experience polish it up a bit. That said, very good information if one can stay with it. Thank you for your work.
+Idomake Thanks for watching. These videos were shot on-the-spot to replace the expanded set-up in class. Definitely not HD, not anything, just holding camera with one hand while trying to work with the other ... If you know anybody sponsoring educational development, send them this way.
Sure do. What kind of knife? Scalpels get thin and superhard, bushwacking knife gets chubby and impact resistant.
Oooookaaay. Usual work flow is: find steel chunk, heat treat, draw knife design out, cut out shape, heat treat again, fit handle. I recommend a generic knife heat treatment sequence from Bob Loveless`s book Knifemaking p.57, 66:
1 Annealing Heat thoroughly to at least 1400 F (760 C) or past the Curie point, then let cool slowly in vermiculite or in an oven over a 12-hr period, not faster. After the grind, bevel and taper are done,
2 Heat up to same high temperature, quench in a barrel of cold oil, brine or water, clean blade, temper at 350 F (177 C) for 2 hours, then let cool in air to room temperature on its own. (No fans)
It will be hard enough to hold a fine edge and not too brittle.
Informative and helpful, thank you!
Thanks for your time to explaning typs of steel ...i like it ...keep up
Very good lecture sir
Great inspiration, thanks!
Well done! well thought out and helpful.
Thanks for watching & feedback.
No problem, what is it that you do. You seem pretty knowledgeable about metals, yet you do a lot with bikes to. Just wondering?
This was incredibly informative. I learned a great deal about a topic from watching this video that I was completely uninformed about before watching.
Thanks for the feedback. I very often indirectly refer back to this video or use terminology from it. For a recent example, check out: ruclips.net/video/PkT56_Yw_sk/видео.html
Great lesson. Just what I needed. Thank you very much!
Thanks for watching!
Excellent video. I like your presentation style, and precise technical language which you relate to everyday items around us, such as nails and tools, etc. I'm certainly enlightened by the information.
Thanks for watching
Excellent presentation. Thanks
24:59 well spent... Thank you sir
Ninz306 Thanks for watching!
a very good video. I feel enlightened
It's really nice , simple and quite a broad insight. Thanks for your efforts.
Well done Sir
Very good explanation.... Thanks
Superbly simple presentation of information and clearly delivered. Really enjoyed the tutorial. Learn't a lot. Now when I visit the foundry I will know what they are talking about 👍 Thanks for sharing.
+Dunk O Idea: Shoot some video at that foundry, upload and link it with this. Thanks for watching.
Thank you so much for the detailed explanation. I believe you are very knowledgeable on the subject. This has helped me a great deal in choosing the material for my project.
+Harold Westrich And me..
Very nicely explained
You Rock at this. Thanks for the videos! Thanks for making it easy for a simpleton like myself!
Thank You for your effort and time !
you are great sir, the video is just worth saving and watching again and again. you channel is like an angle helping to learn the things. My Mechanical engineering materials course even failed to impart this much knowledge. watching first of your video. hope to get more of this kind on this channel.
Thanks again.
Thanks for watching. Here is my playlist of related videos ruclips.net/p/PL9cPDQOOfTepp8sSTY7xoGsAmX5MUf-aS There is also a weldability spin on types of steels, ruclips.net/video/ZMgNY-hKp6o/видео.html and another playlist on steel and material failure ruclips.net/p/PLtsCbF7YOOwjLGSfkPQGBxoFkVyFNUotZ
nice video it makes all easy
Great basic layout! Do I want more depth? Yes, you are great and simplifying a somewhat confusing system. Thanks much!
Awesome, thank you!
Great stuff
Thanks for the video mate, it helps a LOT.
Thank you sir for the great explanation of basic of steels. This video is useful for students and for industrialist as well.
Thanks for watching, I have other steel titles as well, just type "steel" into the channel`s search bar.
Thank you. Well explained and very helpful information!!!
Thank you for your time great video
Thanks for watching!
What a brilliant informative down to earth lecture this is; i know i will keep watching this lecture over and over. By showing simple everyday products that we use you are makeing it easy to understand and are also managing to keep your audiance wanting more and more.
***** Thanks for the feedback and watching. Questions, ideas? Let me know.
It might make for an Informative video if you could do lecture on nut and screw threads, just a thought.
+wakefieldyorkshire I`ve got this: ruclips.net/video/fov8nPzOI6M/видео.html on another channel. Keep digging around, some are more geometric, some are more calculation focused, such as this:ruclips.net/video/L99lnAqVK1A/видео.html
Awesome lesson thanks
Thank you sir...its really informative. Its clear my basic concept about steel.
Thank you very much..Nice and simple way of presenting ..very clear accent to understand for people from any area of World..Thanks..
Please do more videos like this about related subjects..more deeper..
Thanks, there is more on ruclips.net/user/apprenticemath
That was v interesting bro 😃
thx
Learned a lot,Thanks. Rudy
Thanks for the Lesson.
Thanks for watching
Really helpful
Great Video! Thanks a lot .
thoroughly enjoyed it thanks
good job
Very Informative Thanks!
Thank you! This answers my question about HSS as I bought some wood lathe tools and they were labeled as HSS.
Nice, tell us how they last and sharpen when you get to it.
Thanks for watching!
Great video. Could you suggest materials for loudspeaker core structure (top plate and T-yoke)?
Never worked with speakers, no clue whatsoever. Thanks for watching, though!
Wow super helpful ty
Nice video! Well prepared. I liked the examples of items made from each steel type. that really helped! God bless.
Thanks, great video
Thanks for watching!
Thank you very much sir! I have been wondering for some time now what all the letters and numbers stand for. Excellent explanation!
Awesome 😃
Thank you for your knowledge
I came here because i was watching an 80's wwf wrestling match and randy savage hit champion tito santana with a piece of "cold rolled steel" and knocked him out. I needed to find out what that ment
Fantastic video! I'm really interested in steel manufacture in industry, and am considering doing a Masters in Chemistry, possibly a PhD in Chemistry after the masters. What sort of opportunities do you see for someone with those qualifications in the Steel industry, or any related industries? Obviously i have been doing research, but all information can be valuable. Really good video, nice and comprehensive and well thought out, cheers
Good points. I'm still hoping for some quality teaching. At 69, retired from a non-trades area for 9 years, I'll need all the quality help I can get. Thanks for the feedback. I'm subscribed.
Thank you so much, you helped take out a good bit of mystery. Very informative, and well instructed.
Excellent, especially how to spot fake or over claiming items on the market.
great vid....i use axles to make masonry chisles.....cut with a grinder and ground on a wheel.
Hi dear sir will u attach data sheet which u showing in this video. It is very useful and easy to keep in mind after watching video. I will attach it with my notebook. While doing study i will use it for reference. Thank you.
Thanks a lot for this video! You presented very well many types of steel with good example and costs. What I miss for my project is the weldability of kinds of steel, the hardening (how hard is the particular steel after hardening and before) and the surface treatment. If you will have another video on that, that would be great!
Ivan Levels of hardness is produced by either
(1) "cold work" - forming, bending, extruding, ...
(2) "alloying" - carburizing, nitriding, high carbon steel, alloy steels, tool steels ...
(3) "heat treatment" - quench & temper, anneal,
Mild steel is weldable, anything alloyed (Carbon or anything) is tricky or impossible
Some ideas are embedded here: ruclips.net/video/7wIySgYHW44/видео.html
or here ruclips.net/video/yxAde_kh0LE/видео.html
or here ruclips.net/video/39ahpcfWOEM/видео.html
Just type in keywords "brittle" or "ductile" on my channel, see what comes up. I guess I can make a comprehensive video on what I just typed up, too. I`ll think up some visuals for it.
Thanks for watching.
theoverengineer You're awesome! Thanks for the info!! You were a big help!
Ivan bitte schön
theoverengineer spasibo
great video, thank you very much.
Steel manufacturing is somewhat limited to - steel. With chemistry degree I would shoot for a bigger pie, metallurgy. Bettering steel for extreme applications (space, underwater, military) has been tried from all angles, new discoveries are made in composite metals, like Ni-Ti, Bi-F, Pt-Cu - just throwing out some letters there. Invent a kichen knife or drill bit that never needs sharpening, body armor that weighs nothing or vehicle body that weighs nearly nothing. Play with the patterns.
Where can I get these steel documents in your video?
What is the best steel for a pot to cook with if I wanted to buy the best?
A lot of poor Hispanic people in NYC and other people have this low quality cookware that is not brand name. I find it in abandoned storage units and sorry yard sales. The metal sucks. I need to use a big pot to cook some pickled beets, and I happen to have one of these cheap big 'poor person' pots. Using one of these 'poor person' pots under heat, do you think sulfur and phosphorous will slightly leach into the food?
Thank you so much for this useful video
How about HSLA at 23:15?
Btw vgood explanation.
Completely legit, of course, SOFT, weldable, paintable car body panels are made of it. Not tools of ANY kind.
@@theoverengineer Thanks
Interesting video !
Can you please explain the difference between H2o & oil quenching on steel ?
I have also seen stamped on commercial type steel Truck frames that they should not be welded .
In your opinion is there any way to properly weld a broken or cracked frame with that stamping ?
Thank You .
During quenching the microstructure of steel changes. In quenching, red-hot steel`s microstructure called "austenite" turns into "martensite', regardless of the quenching medium. (Brine can also be used). Martensite is extremely hard and brittle. Water cools faster, oil cools a bit slower. In water quienching, more of the austenite forms martensite, and less of it forms pearlite - a softer form of steel. In oil cooling more pearlite forms and less martensite, so the finished steel is more ductile, less brittle.
Welding changes the microstructure of steel around the weld, all martensite and pearlite will transition into "ferrite" a very soft and weak form of steel (nails, rebar, roof flashing). In addition, all the fine dissolved carbon runs and clumps together and solidifies into streaks and layers of graphite (same stuff in pencils). It just breaks right there, graphite has zero strength. Even if the weld is quenched somehow to form martensite, graphite layers will still form, it is not reversible and be a weak layer in the weld area. So: it can be welded, it just won`t hold. Like trying to weld the claw back on a hammer, pretty until you pull a nail and breaks 10 seconds into it.
i have herd oil quenching ads carbon to the metal this also makes it harder
NOBOX7 Laying steel in a charcoal bed for 4-10hrs will add a quarter of a single percent of carbon to the steel, to a depth of 5 -10 microinches, a 45sec oil quench does nothing. Added carbon only makes the steel harder at the depth of the added carbon, microscopic amount of surface hardening. Done on gear teeth and shafts commonly.
Koslow test kits can help identify steels
Great video! thank you! Question: I just got a Cold Steel Katana, what does the 1055 Carbon mean?
+Rudy Cambara Chemistry-wise 0.55% carbon is in the steel which makes it hardenable by heat treatment (power sharpening can destroy it), has some give and not super brittle. Will rust right away unless protected. It was probably cheaply cast in a mold with no sign of going through upset forging.
Physics-wise a katana`s making, center of gravity and weight distribution are just us important.
+theoverengineer Thank you for responding so quickly!
So you mentioned that some tools are made of medium carbon steels if they are intended to be resharpened. But stainless steels and high speed steels are more durable so they may not need to be resharpened. If I wanted to make an axe head, what type/grade of steel do you suggest?
Axe head :
Most durable materials: 316 stainless, a.k.a. 14-12 stainless, does not hold an edge
Best edge retention material: tool steels, including high-speed steels, none of them are resistant to corrosion
The edge has to withstand shock or impact loading without shattering and chipping. Medium carbon steel is a reasonable material, since having an edge is more important than resistance to corrosion.
Axe needs to be made with forging, in a forging press under thousands of kg or lbs of pressure, at a forging temperature. Without the right method at the right temperature, an axe head could be shaped but won`t work as an axe. Just a decorative mantelpiece.
theoverengineer. So a simple blacksmithing forge to heat the metal and 2 lb hammer should suffice? With heat treatment and tempering of course
Give it a go, see how it turns out, chop some wood, shoot a video and tell us about it.
theoverengineer thank you for the advice. This is very helpful
One request to you that can you make video on explanation of similar composition steels on different standards.
what do you think about the 80CrV2 Steel blade knife ?? for Survival - Bushcraft/Outdoor knife use ?? do you think is it durable or not ?? whats the best stone to sharpening the blade ?? 80CrV2 Steel knife blade is it weak or is it strong ?? thanks
Blade looks good on paper. Hope they use what they claim they do, hope they make it as it should. Here is how it looks like when they have a clue: ruclips.net/video/ppecDFaLsgE/видео.html
Types of stones don`t matter much, particle uniformity does, together with particle hardness, particly crystaline structure and behavior. Here is my take on sharpening: ruclips.net/video/LytnUqXzTKE/видео.html
ok thank you for quick response and good advice :)
Thank you, now I know more than l did.
excellent
Where can i find those 1080 steel data sheet
Here www.matweb.com/search/QuickText.aspx?SearchText=1080
thank you for this!!!
Thanks buddy, very handy
GOOD BRO
can u give the periodic chart again with all mechanical properties like ductility, malleability,etc??
Hmmm. Which one? Periodic charts don`t list mechanical properties.
hey buddy ..video is really helpful..
can you make a video in which you describe all type of steel available in market and how they are known like hss 18-4-1
Sure, thanks for the idea. Will send as link.
Is EN36 ( Case hardening steel) a low carbon steel ?
No, completely different steel numbering system. Its Carbon content is 0.12-0.18%, which is the mild steel range. EN36 is also alloyed with Ni and Cr which make the steel case hardening. EN36 is similar to SAE 3400-series Ni-Cr Alloy Steel.
EN36 is suitable for roller and ball bearings of extra light section, aeroplane and motor
crankshafts requiring hard surfaces for roller paths, connecting rods with case-hardened ends, as well as highly
stressed gudgeon pins, gears and certain types of collets.
is high carbon steel same as hard steel? if they arent same, can you explain a little bit whats a hard steel
Hardening is basically a heat treating process, and can be applied to any type of steel, though some will get harder than others.
But it is a different subject.
Thank you, good explanation :-)
can i paint on steel ?
i want to manufacture steel doors and windows with wooden like paints on it,
but some people told me that steel cant hold paint for long ....
+Sahil Gupta I`m sure you can. It is also possible to paint steel. Needs proper surface prep: cleaning, pickling, priming, drying or possibly baking in a kiln between top coats, depending on paint type.
so wich kind/type of Steel is the Best for the Blade Knifes ?? wich one is the Strongest,Durable, and Impact Resistant Durability/Hardness ?? with non-rolling chip,edge ??wich one can retain the sharp edge for long time ?? and wich one is the best sharpener for it ?? waterstones ??diamonds , what else ?? thanks
Blade knife for what? Surgery? Bush whacking? Skinning deer? Chip carving? They all need completely different materials, completely different heat treatment, completely different blade geometry. I strarted a series on strength, durability, impact resistance, hardness and other things at: ruclips.net/p/PL9cPDQOOfTepp8sSTY7xoGsAmX5MUf-aS
is a Survival Knife Custom Made by a friend for Bushcraft and Outdoors , is a good Chopper aswel is made for heavy works ,out in the wilderness , chopping trees hunting , makeing shelter etc . Knife specs 7" blade(20cm) 3/16"( almost 5mm) thick. Steel is 80crv2 .he normalize the steel with 3 cycles. Do 1 heat treat and quench, and 3 cycles of tempering is that any good for it? thanks
Nicely made so far, will need to keep it dry but should last a long time, especially if the edge is ground on it properly.
ok nice to know that ,thank you :)
Adrian Wolf 440c stainless steel best for Knife. It's the strongest steel ever.
Very informative. I enjoy learning about metallurgy. What does the designation 304 mean as it pertains to stainless steel? That's a Great video.
donny ward digit 3 means "austenitic" stainless group, and 04 is just sequential, the 4th mix. Non-magnetic, soft & formable, excellent corrosion resistance. Sinks, faucets, strainers, kitchen stuff with no edge.See chemical composition and a bit about properties here: ruclips.net/video/0fKAFys9238/видео.html
donny ward 304 refers to class of SS,as it mentioned in the video about types of SS-Austenite,martensite and duplex SS.Austenites have 200 and 300 class,so if you find anywhere with the label of 304,316 that's austenitic stainless steel..304 is also widely known as 18/8 stainless steel,18% chromium and 8% nickel basically and used for surgical items,the other 316 is 18/10 chromium being 18% and nickel 10%,its used in kitchen cutlery and sinks...i think 200 class stainless steels are less corrosion resistant as compared to 300 class....and yes Austenite SS also makeup a huge part of Pressure parts in Industrial boilers preferably for making superheaters and reheater tubes capable of withstanding high pressures and temperatures.so Austenite SS makes majority of the SS produced in the market,swiss knife like shown in the video is strong and tough,its made up of martensite..duplex has roughly twice the strength of Austenites.
Thank you for this information. I frequently weld 308 formed plate and 308 pipe. I noticed my fitter's magnet wouldn't work on SS. I've been curious what determines how magnetic SS is. I'm guessing it's the amount of chromium in the steel. Thanks again for taking the time to respond.
donny ward Not the chromium. Austenite. Austenite is a special crystal, atoms locked in it won`t be magnetized. Now envision a cube, with atoms sitting at the corners + 1 in the middle of the cube. Austenite has this body-centered cubic crystal lattice, ferritic and martensitic steels are magnetic & are face-centered cubic.
Not sure if you still read these, but I had a quick question. The xx in the designations, such as 10xx, do they refer to the % of carbon? For example, 5160 would have Cr 0.80% since its 51xx. but then would it have 0.60% carbon? Or, for 1095, would it have 0.95% carbon? Just curious if I was understanding that correctly, and thanks for the answer!
+Amra That`s right, it works exactly like that in carbon and alloy steels.
Thank you so much for the response! That is extremely helpful :)
Rebar is usually high carbon. Hammers are tool steel usual w1 or o1.
grate lacture
please give me answer, which steel are strong,high carbon steel vs high speed steel.is the high speed steel rustproof?
High speed is stronger, does rust.
many many thanks brother.I find this question many days but don't mind I want to know another answer please tell me high speed steel melting point.
Liquid at about 1550 C
thanks brother.
is cr-V more durable than cr-Ni? what's the difference when it is used to make tools?
+Mirage ™ "Durable" is not a standardized material property. But read on:
Both the SAE 3000 series Cr-Ni steels and the SAE 6000 series Cr-V steels, say 3120 vs. 6120 are very similar in strength, elasticity, shear deformation, impact resistance, weldability, machinability. All their alloying elements are all under 5% total content. Both Cr and V are added to increase surface hardness. Ni makes steel less brittle in Arctic cold (under impact) and somewhat resistant to corrosion (depending on %).
Cr-Ni steels are heat-treatable deep hardening steels. They make drive shafts, gears (tranny) and axles from it, so they are hard on the surface but give under shock loads. Cold service environment is likely. Low-carbon (under 0.35%) versions are weldable.
Cr-V is used more for high speed cutting tools, springs and bearings where high hardness is required but also give under repeated loading cycles. V retards grain growth at elevated temperatures, so hot edges stay sharp longer. Hot service environment is likely.
In hand tools at room temperature the differences don`t matter. It`s like eating pizza made with winter wheat and spring wheat. As long as they`re baked right, they work.
theoverengineer Wow thanks. I wish you were my best friend.