Actually, such a comparative experiment is meaningless. We should compare prices with the same specifications, or compare specifications with the same prices . Comparing different prices and specifications is meaningless. China also has bolts of various specifications, with different prices and usage scenarios
@@АнатолийДанилов-ш7д In fact, many products or product accessories in the United States are imported from China. Just like this small bolt, priced at $0.5, it is less than $0.1 in China. China also has high specification bolts, such as national standard bolts, which are priced five times higher than ordinary bolts and have better quality. Recently, the United States lifted restrictions on DJI drones because they cannot be replaced. American police, firefighters, and ordinary people all use DJI drones. The United States cannot even find substitute products
Interesting. I think the $0.5 one still has room to improve, and it has improved a lot in the past 10 years. But the $50 one will just become more and more expensive for the same quality. That’s sad.
...Nice mindless entertainment... Thank you for making it visually obvious that this is not 'proper' engineering test setup. ...Very entertaining reading the outraged comments of those who expected otherwise... ,,,Love ya daft videos... (not a fan of the loudness of the thumping repetitive music around 7'40)
Well the 0.5 usd China bolt might be only cost 0.01 in China. The US dealer ordered and imported low quailty trash to earn big profit, and Chinese take all the blame.
Chinese stud only $0.5 , but USA stud needs $50. It can’t be compared. If you spend the same $50 to buy the other high quality Chinese make. It will be much better than US make
@@shadowj3311If someone has unlimited budget, made in China could never be an option On the other hand, if budget is limited and quality is not a matter, then made in China is a good option
From the statistical point of view, I don't know what you want to express in this video. There are specifications marked on the screws. There are many specifications. I saw 5.8/8.8. For example, if it is marked with 5.8, it actually means the tensile force is 520 MPa. As long as it reaches this, it is qualified.
Steel products varies in specification, the test results tells that clearly. Brands or country of origin has nothing to do with the samples tested. Every bolt have its application and usage. Users need to know where to use what, that is the point
there should be a little number on the bolt..unless it's just a plain old bolt for your garden shed...you should use the bolt designed for the job especially if failure can result in a bad accident
@@babylao One just doesn't compare products with dissimilar qualities.Only a fool would use an ungraded bolt from anywhere for an engine head or other critical component being from China USA or Mars.
The $0.5 one is the best. Don't forget it's from construction which use purpose is totally different from car or airplane usages. Who would buy the $50 one, nuts.
It is stupid to test different hardness bolt and make a comparison. There is no free lunch. You will have to pay higher price for a higher hardness steel, It is a fact that China can make a strong bolt as well with a much cheaper price than the Western.
Esta comparação de força de ruptura não foi feita com as condições certas! No teste dos parafusos as forças aplicadas não estavam bem centradas acasionando tensões não uniformes e ai estas comparaçoes não sao válidas! Para fazer estes testes é necessário conhecer a matéria! Coisa de leigo!
No mínimo servem para uma pequena amostragem, a quem nunca se apercebeu da resistência à tração. Podendo-se concluir que a cifra "12.9" refere um aço (julgo ser um parafuso M8) com uma resistência efetiva de 170 Kg/ mm quadrado.
@@orlandograçacosta O erro não esta no material dos parafusos, mas em como o teste foi executado. O 'ensaio do material' do parafuso ou seja o aço empregado deve ser feito para que a tensão no material na hora do teste deve ser aplicado uniformemente. Estou falando TENSÂO ou N/(mm quadrado). do jeito que foi feito isso não é o caso! Se quiser se informar, veja na internet como se faz um ensaio de tração , tudo isso vale tambem para ensaio de compresão. Nesse caso tambem não é facil garantir que a tensão no corpo de prova seja uniforme! No teste que o rapaz fez a força foi aplicada de maneira não uniforme e dai o erro é muuuuito grande. O Sr ja viu cumo é feito um teste desses en uma máquina de ensaio de traçoao? Como é feito o corpo de prova? Isso não é à toa! Deve se ter cuidado com oque é publicado no RUclips !
Cool but... Why for the American made one did you have a bigger gap between the hooks?? That alone changes the physics of the pull and stress on the metal as Well.... .. .
I do think that you should compare different origin products all at the same price, let alone they have different spec and application. Keep in your mind that each penny pays. Don't expect something worth one dollar but you pay only one penny! That is stupid and greedy!
Her bir civata farklı sertlikte ve boyutta, haliyle arada belirgin bir mukavemet farklılığı normal sonuç. Örneğin bir civata'nın üzerinde 8.8 değeri var ise o civata çelik ve 8800 Kilogramlık bir ağırlığı kaldırma kapasitesini gösterir, yalnız bu değeri 10 milimetre lik bir çap için olan değer. Çap 20 mm. Olacak olur ise 8800X2= 17600 Kg. lık bir yüke dayanabilir. Yalnız hesaplamada bir konu ya dikkat etmek gerekir 8.8 değerdeki civata neden 7800 Kg. civarında koptu.? 8.8 değeri 10 mm. İçin olan değer burada 10M bir vida gibi görünüyor, peki neden 7800 değerinde koptu? Aslında 8.8 değerinden daha fazla direnç gösterdi çünkü 10M vidanın üst anma çapı 10mm. ama dişdibi çapı 8mm den daha küçük aslında teste daha ince olanın değeri. Konuyu kısaca anlatmaya çalıştım zaten işin içinde olan ve bilenlere ben anlatacak kadar bilgili değilim, sadece değerlerin neden düşük kaldığı konusuna değinmek istedim bu arada 12.9 olanın da 12.900 Kg kuvvete kadar dirençli olması anlamını ifade ediyor.
But I don't get the point of this 'demonstration' ... for if the 50c one was intended for a 2000 Kg job ... and the $50 one for a 7000 Kg job, then the cheaper one (at double) is the much better bolt/stud to purchase for its task ... "Dah!" another 15 minutes of in my life wasted.
USA SCREW..BAJA BERKARAT DAYA TAHAN 100 TAHUN. CHINA SCREW...ALUMINIUM TIDAK AKAN BERKARAT SELAMANYA. RUSIA. SCREW...??? INDONESIA SCREW DENGAN KAYU DAYA TAHAN 30 TAHUN.
Nói về chất lượng sản phẩm thì chi na không thể so với chất lượng châu âu và u s a được và giá thành đưong nhiên Châu âu sẽ rất đắt gấp nhiều lần chi na nhưng có những sản phẩm nếu đặt hàng cho chi ne SX theo tiêu chuẩn châu âu và Mỹ thì cũng đảm bảo đạt 99/00 tất nhiên giá cả thì cũng không hề rẻ
Okay. How comes china is in that things!??? Don't disturbing your mindset about blaming China. If you do, it's means that you are afraid of competition. Then after, another days are comes you will stard saying 'there are the fake things in GERMANY or CANADA ' I see you U.S. Just use your brain & energy with your resources that you have to a new innovations, creativities, make a lot of good things as you can, then put to the market with an affordable price & good promotion. China is nothing to you. SO STOP BLAMING YOUR SELF.
I just know China at least 3xxx kg. But what is the point of testing. What area the bolt would be used ? For hanging TV , fan? Their screwing and shape are also different too. Just for ref., I still believe in that China one will be the poorest but cost is most effective in proper place to be used. However, If use them in the planes, consider twice...
The author seems to lack basic knowledge about bolts/studs and economics. Each bolt/stud is made to meet specific requirement for different applications and the price is based on manufacture cost and profit. That is why bolts/studs need different specifications. The tests carried out in the video have only shown one of the bolt/stud characters - tensile strength. And only the $0.5 bolt and BMW stud have specification on them, 5.8 and 12.9 respectfully. The 5 means a tensile strength of 500 MPa and 12 stands for 1200 MPa. Lets just forget the .8, .9, and MPa for now. The BMW tensile strength should be 1200/500 =2.4 times of that $0.5 bolt. As shown in the video, the $0.5 bolt needs 3857 kg to break, then the BMW should be able to take 9257 kg instead of 5569 kg. So, it could be that the $0.5 bolt is over spec or the BMW is under spec. However, the story should not stopped here. Since BMW is specifically designed to keep all off you expensive engine parts from flying apart, tensile strength is not the only requirement. The yield strength and thread accuracy are equally important. So, it is possible that the BMW may cost more than $50!
Does the comparison of $0.5 (made by 🇨🇳) vs $10 (made by 🇺🇸) make sense? If you want to make a real comparison, compare $10 (made by 🇨🇳) vs $10 (made by 🇺🇸)
Sorry, it wasn't apples to apples test. because the white one with code 5.8 is ordinary iron and the black one with code 12.9 is steel. so this test is not fair
Trying to put China down with this comparison is totally nonsense. China makes many different grades of things. If you buy cheap than don't expect is going to perform the same as a very expensive one. American car manufactures had been around for so long and yet they still produced the worst cars and trucks compared to other brands. American made is just overrated, overpriced, very poor reliability with no resale value.
It means that each device depends on the user himself who wants to use the device in the environment of what type, weight, size and its importance for that area, and then he makes the choice of the device required for different sizes and weights according to the area where the device is to be used. . then buy for the relevant use. . And not everything low price will mean it's fake.
Il tuo test sui bulloni è stupido, paragoni un bullone alta resistenza 12.9, con bulloni di qualità e con resistenza inferiore... È normale che il 12.9, sia il migliore 🤦
Different color material different percentage of each material different appliance this doesn't make any sense. It's like comparing strap for 10 pounds or 100
Right, that was the point, value wise the 5 dollar bolt is the best value, but it seriously depends on its use. The BMW one is kinda funny, but it has the strength as it does for a reason. My question is what bolts and nuts were used on fair rides? Will the bolt break on my roller coasterl ride when I'm at the top of the ride?
Schrauben mit unbekannter Festigkeitsklasse und unterschiedlichen Längen im Zugversuch? Dazu "homemade" mit gerolltem Gewinde? Schraubenköpfe und Muttern liegen nicht plan auf! Noch unwissenschaftlicher geht es nicht?
Gostei de ver a pressão exercida sobre os tijolos, mostrou claramente que os tijolos do passado eram melhores produzidos e ficaram melhores ao longo do tempo, mesmo sofrendo as condições climáticas, são bem melhores do que os produzidos atualmente.
Die Schrauben haben alle eine andere Funktion. Die Zylinderkopfschrauben von BMW und andere Autohersteller sind zB Dehnschrauben und nur einmal zu verwenden, das ist auch richtig so. ARP sind mehrfach verwendbar, also einfach nur hart und zäh nicht so dehnbar und speziell für extreme Tuning Motoren gedacht. Eine normale 12.9 er Schraube ohne das sie eine Zylinderkopfschraube ist, wird andere Ergebnisse liefern. Nehme ich billig Schrauben und vergleiche sie mit den härtesten die es gibt für ganz spezielle Zwecke, ist klar wer gewinnt. Übrigens gibt es auch einen deutschen Hersteller der spezielle Zylinderkopfschrauben, wie ARP herstellt, das sollte man vergleichen.
Danke für die weiterführenden Infos. Der Creator legt nicht besonders viel wert darauf, dass die Videos repräsentative Ergebnisse beinhalten (oder gar auf wissenschaftlichen Methoden basieren), sondern es sind reine Unterhaltungsvideos, in denen es vorrangig darum geht, unterschiedliche Gegenstände zu zerstören. Und besonders weiterentwickeln wird er sich bestimmt auch nicht... LG
Vos tests ne sont pas valables puisque vous utilisez des classes différentes de visserie, donc résistance différentes exprimer en N.mm2 ou MPa. Les caractéristiques mécaniques de chaque matériau doivent être trouvable sur internet.
Isn't this a little bit bias due to the join of the head, to the shaft ? (and stresses upon the join?) Just sayin - smart replies appreciated Not really a 'Like for Like'' comparison
Different grade bolts have different tensile strengths. Even partial thread / full thread, Galvd or heat treatment should be taken into consideration. The experiment is really meaningless. The title is irritating and annoying.
Why any product is cheaper in price? Obviously it has been compromised on quality Besides a few other minor things But biggest price reduction is due to its quality
This means nothing as the tensile strength of the bolts and studs are different you showed a 5.8 tensile strength which is mild steel followed by a 12.9 high tensile bolt
Actually, such a comparative experiment is meaningless. We should compare prices with the same specifications, or compare specifications with the same prices . Comparing different prices and specifications is meaningless. China also has bolts of various specifications, with different prices and usage scenarios
说得对
That five-dollar Chinese screw is only sold for one dollar in China
他们没有0.05元人民币的产品😂 他们只有0.5美元的产品😂
Если сравнивать уровень прогресса Китаю очень далеко до США. Я говорю о самолётах технологиях клепки сборки .у Китая такого в помине нет
@@АнатолийДанилов-ш7д In fact, many products or product accessories in the United States are imported from China. Just like this small bolt, priced at $0.5, it is less than $0.1 in China. China also has high specification bolts, such as national standard bolts, which are priced five times higher than ordinary bolts and have better quality. Recently, the United States lifted restrictions on DJI drones because they cannot be replaced. American police, firefighters, and ordinary people all use DJI drones. The United States cannot even find substitute products
Interesting. I think the $0.5 one still has room to improve, and it has improved a lot in the past 10 years. But the $50 one will just become more and more expensive for the same quality. That’s sad.
Muy interesante el video sobre todo lo de los tornillos la gran diferencia que existe entre los diferentes aceros.
明显就不是一样的材质，所以价格不一样。这和在哪生产的关系不大
Its feel like in the Dentist room by watching this ,
l like it
just in time
never give up
next idea come on
good luk.
...Nice mindless entertainment... Thank you for making it visually obvious that this is not 'proper' engineering test setup.
...Very entertaining reading the outraged comments of those who expected otherwise...
,,,Love ya daft videos... (not a fan of the loudness of the thumping repetitive music around 7'40)
bolts tensile test is not repeatable, mounting is different for each case.
Well the 0.5 usd China bolt might be only cost 0.01 in China. The US dealer ordered and imported low quailty trash to earn big profit, and Chinese take all the blame.
true， some dealers place order with standard of price of 0.5usd, but they asked us to show 50USD standard on the product.
Chinese stud only $0.5 , but USA stud needs $50. It can’t be compared. If you spend the same $50 to buy the other high quality Chinese make. It will be much better than US make
非常✔️正确
correct
Why China don’t make $50 standards quality at the first place?
@@shadowj3311If someone has unlimited budget, made in China could never be an option
On the other hand, if budget is limited and quality is not a matter, then made in China is a good option
@@shadowj3311 你不买50美元档次的中国产品，那是你的问题，朋友。
From the statistical point of view, I don't know what you want to express in this video. There are specifications marked on the screws. There are many specifications. I saw 5.8/8.8. For example, if it is marked with 5.8, it actually means the tensile force is 520 MPa. As long as it reaches this, it is qualified.
Bro it's for fun.
Why compare US and China bolts without specifying product specs first?. Are they of the same grade?
其实中国什么规格的都有.价格还更便宜
@@babylao
中國的會爆炸😂
@@susaki7100 是的，就像你脑细胞会爆炸一样
@@susaki7100只要看到中国二个字，你就会爆炸。可爱的机器人
补充信息供参考，大陆这边螺栓至少前有三个级别，从低到高5.8 8.8 12.8，我注意到BMW有12.8不知道是不是跟大陆这边螺栓类似级别。建议同一级别测试，才有意义
I can buy 100 Chinese stud instead of buying 1 US make lol...
Steel products varies in specification, the test results tells that clearly.
Brands or country of origin has nothing to do with the samples tested.
Every bolt have its application and usage.
Users need to know where to use what, that is the point
there should be a little number on the bolt..unless it's just a plain old bolt for your garden shed...you should use the bolt designed for the job especially if failure can result in a bad accident
@@joeoria4497 Graded bolts "chinese"one wasn't, can also have number of spots or lines on the head to show the grade.
@@lCountMike 第一个出来的已经显示了在中国那是最低等级的.一般使用的是8.8的，在高的是10.9的.12.8 16.8等等....其实做实验的应该相同价格比质量.相同质量比价格
@@babylao One just doesn't compare products with dissimilar qualities.Only a fool would use an ungraded bolt from anywhere for an engine head or other critical component being from China USA or Mars.
Exactly
from a " X Kg per dollar " perspective point of view, I'd say $0.5 one is really way worthy than the rest of them.
其实在中国那一个只有0.01美元
@@babylao 我记得好像是10块钱一大把
好像是22元一公斤？
Era si normal, nu poti compara grupa de rezistenta a materialului 5.8 China cu 12.9 U S A. Faceti si testarea surub U S A grupa 5,8 sa vedem....
The $0.5 one is the best. Don't forget it's from construction which use purpose is totally different from car or airplane usages. Who would buy the $50 one, nuts.
美国军购会买90000美元的
People who get kickbacks will buy
@@user-doremifasollasi 军购的话越多越好哈哈
It is stupid to test different hardness bolt and make a comparison. There is no free lunch. You will have to pay higher price for a higher hardness steel, It is a fact that China can make a strong bolt as well with a much cheaper price than the Western.
5.8 VS 10.9 😂
2 vs 8
hardness
5.8 VS 12.9
6:36 Fuckin hell that music, I’m dying …. Stop it 😫
and they all made in China, it is all about how much you want to pay!!!
50美元才8210公斤，真的好扯蛋，應該82100公斤才對！
@@User-2j0k0g2f5u 对啊，那个五毛钱的装三个就比那个50的还结实了。
只看封面，这两个螺丝强度就不一样。左边带花纹的强度比右边的高，做比较至少一样标号的螺丝吧。虽然国内弄虚作假，劣质产品很多，但是你这个视频也让我见识到了，原来都一个样，“标题党”。
本身做測試就是測試他的強度😂和他的標號標示沒有關係吧，他有沒有說那個好一點，他們只是列出強度和價錢😂😂就是我們常說的性價比，看來你的玻璃心又發作了😂😂😂而且你怎樣用肉眼做鑒定，教一下我們😂😂😂😂
@@User-2j0k0g2f5u 去看看下面说的5.8VS10.9什么意思，要比较也是拿两个不同国家产的5.8或者是10.9去比较。
@@User-2j0k0g2f5u 规格不一样比什么性价比，素质这么低上来就怼人
@@User-2j0k0g2f5u 的确需要用同规格的强度的产品做对比
Esta comparação de força de ruptura não foi feita com as condições certas! No teste dos parafusos as forças aplicadas não estavam bem centradas acasionando tensões não uniformes e ai estas comparaçoes não sao válidas! Para fazer estes testes é necessário conhecer a matéria! Coisa de leigo!
No mínimo servem para uma pequena amostragem, a quem nunca se apercebeu da resistência à tração. Podendo-se concluir que a cifra "12.9" refere um aço (julgo ser um parafuso M8) com uma resistência efetiva de 170 Kg/ mm quadrado.
@@orlandograçacosta O erro não esta no material dos parafusos, mas em como o teste foi executado. O 'ensaio do material' do parafuso ou seja o aço empregado deve ser feito para que a tensão no material na hora do teste deve ser aplicado uniformemente. Estou falando TENSÂO ou N/(mm quadrado). do jeito que foi feito isso não é o caso! Se quiser se informar, veja na internet como se faz um ensaio de tração , tudo isso vale tambem para ensaio de compresão. Nesse caso tambem não é facil garantir que a tensão no corpo de prova seja uniforme! No teste que o rapaz fez a força foi aplicada de maneira não uniforme e dai o erro é muuuuito grande. O Sr ja viu cumo é feito um teste desses en uma máquina de ensaio de traçoao? Como é feito o corpo de prova? Isso não é à toa! Deve se ter cuidado com oque é publicado no RUclips !
Experience is not fair and standards vary
都不是一个硬度的，这么比有什么意义？你骑着单车去和汽车撞，然后说单车不安全？
To make China look bad, even though China produces items of all quality levels and price points. Sensationalism sells views.
Cool but...
Why for the American made one did you have a bigger gap between the hooks??
That alone changes the physics of the pull and stress on the metal as Well.... .. .
それは思った。
@@patch33 ?❓❔
@@troygach9228 同意😅
Porque no utilizan bulones que tengan el mismo tipo de acero están comparando uno completamente blando con uno totalmente duro no sean ridículos 😂
50 cents 3.8 KG
50 DOLLARS 8.21 KG
The 50 Dollars one only should be a little more than one dollar
at the maximum of no more than 1.5 Dollars
Well, in an ideal world, for ten times the 5$ price i would've expected at least 70.000 Kilogs...
I do think that you should compare different origin products all at the same price, let alone they have different spec and application. Keep in your mind that each penny pays. Don't expect something worth one dollar but you pay only one penny! That is stupid and greedy!
I think so
There used to be quality. Quality was prioritized before money. Nowadays, importance is given first to profit. Capitalism.
Her bir civata farklı sertlikte ve boyutta, haliyle arada belirgin bir mukavemet farklılığı normal sonuç. Örneğin bir civata'nın üzerinde 8.8 değeri var ise o civata çelik ve 8800 Kilogramlık bir ağırlığı kaldırma kapasitesini gösterir, yalnız bu değeri 10 milimetre lik bir çap için olan değer. Çap 20 mm. Olacak olur ise 8800X2= 17600 Kg. lık bir yüke dayanabilir. Yalnız hesaplamada bir konu ya dikkat etmek gerekir 8.8 değerdeki civata neden 7800 Kg. civarında koptu.? 8.8 değeri 10 mm. İçin olan değer burada 10M bir vida gibi görünüyor, peki neden 7800 değerinde koptu? Aslında 8.8 değerinden daha fazla direnç gösterdi çünkü 10M vidanın üst anma çapı 10mm. ama dişdibi çapı 8mm den daha küçük aslında teste daha ince olanın değeri. Konuyu kısaca anlatmaya çalıştım zaten işin içinde olan ve bilenlere ben anlatacak kadar bilgili değilim, sadece değerlerin neden düşük kaldığı konusuna değinmek istedim bu arada 12.9 olanın da 12.900 Kg kuvvete kadar dirençli olması anlamını ifade ediyor.
Okay, 3 cheapest studs will do $50 work
Lacks specifications.
The comparison between 12.9 and 5.8 is funny, why don’t you compare eggs with stones?
So to simplify - use 3 of the low end Chinese bolts instead of USA bolts for more weight bearing and a saving of $48.50
1 video bharat vs chaina please 😂😂
The last slide showing comparisons has a 1980 brick should read 1890. There was no 1980 brick shown in the experiment.
But I don't get the point of this 'demonstration' ... for if the 50c one was intended for a 2000 Kg job ... and the $50 one for a 7000 Kg job, then the cheaper one (at double) is the much better bolt/stud to purchase for its task ... "Dah!" another 15 minutes of in my life wasted.
Point of this video is, that USA have artificially additional value (bcs. it's from the USA 🙄 and honestly, I fu
符合使用規範就是可以的，不是說東西越好就是對的。
خوب شد اول کلیپ گفت در منزل انجام ندهید پرس ۱۰۰ تن در منزل!!!!
It should compare the strength with the same hardness value then compare the price and followed by the country of manufacture.
USA SCREW..BAJA BERKARAT DAYA TAHAN 100 TAHUN.
CHINA SCREW...ALUMINIUM TIDAK AKAN BERKARAT SELAMANYA.
RUSIA. SCREW...???
INDONESIA SCREW DENGAN KAYU DAYA TAHAN 30 TAHUN.
Try Sheffield Steel . . . . . . . You may want a 'Bigger-Press'!
Nói về chất lượng sản phẩm thì chi na không thể so với chất lượng châu âu và u s a được và giá thành đưong nhiên Châu âu sẽ rất đắt gấp nhiều lần chi na nhưng có những sản phẩm nếu đặt hàng cho chi ne SX theo tiêu chuẩn châu âu và Mỹ thì cũng đảm bảo đạt 99/00 tất nhiên giá cả thì cũng không hề rẻ
Okay. How comes china is in that things!???
Don't disturbing your mindset about blaming China. If you do, it's means that you are afraid of competition. Then after, another days are comes you will stard saying 'there are the fake things in GERMANY or CANADA ' I see you U.S.
Just use your brain & energy with your resources that you have to a new innovations, creativities, make a lot of good things as you can, then put to the market with an affordable price & good promotion. China is nothing to you. SO STOP BLAMING YOUR SELF.
δεν ξέρω σε τι αποσκοπεί το βίντεο αλλά εδώ συγκρίνουμε μπουλωνια με σκληρότητα 5,5. ..8,8
I just know China at least 3xxx kg. But what is the point of testing. What area the bolt would be used ? For hanging TV , fan?
Their screwing and shape are also different too. Just for ref.,
I still believe in that China one will be the poorest but cost is most effective in proper place to be used. However, If use them in the planes, consider twice...
过度的质量是浪费。不同场合使用不同质量和价格的产品才是关键。50美元一根螺栓用来挂电视，土豪都不会这样。本视频的对比毫无意义
@@dawuyong2218 Absolutely, overspecification is a sin especially in aviation.
素人だな～まったく意味無しテスト
試験片の作り方も分からないでそのままやってどうするの？
The author seems to lack basic knowledge about bolts/studs and economics. Each bolt/stud is made to meet specific requirement for different applications and the price is based on manufacture cost and profit. That is why bolts/studs need different specifications. The tests carried out in the video have only shown one of the bolt/stud characters - tensile strength. And only the $0.5 bolt and BMW stud have specification on them, 5.8 and 12.9 respectfully. The 5 means a tensile strength of 500 MPa and 12 stands for 1200 MPa. Lets just forget the .8, .9, and MPa for now. The BMW tensile strength should be 1200/500 =2.4 times of that $0.5 bolt. As shown in the video, the $0.5 bolt needs 3857 kg to break, then the BMW should be able to take 9257 kg instead of 5569 kg. So, it could be that the $0.5 bolt is over spec or the BMW is under spec. However, the story should not stopped here. Since BMW is specifically designed to keep all off you expensive engine parts from flying apart, tensile strength is not the only requirement. The yield strength and thread accuracy are equally important. So, it is possible that the BMW may cost more than $50!
Does the comparison of $0.5 (made by 🇨🇳) vs $10 (made by 🇺🇸) make sense? If you want to make a real comparison, compare $10 (made by 🇨🇳) vs $10 (made by 🇺🇸)
είναι εντελώς απαράδεκτο που το μπουλωνι κεφαλής της bmw έσπασε στην κεφαλή του.
其实，在一个数量级上，差别并没有那么大。
Sorry, it wasn't apples to apples test. because the white one with code 5.8 is ordinary iron and the black one with code 12.9 is steel. so this test is not fair
the studs comparison was quite useful for me as I'm just about to torque down some rod and main bolts with ARP. They're not as strong as I thought
Trying to put China down with this comparison is totally nonsense. China makes many different grades of things. If you buy cheap than don't expect is going to perform the same as a very expensive one. American car manufactures had been around for so long and yet they still produced the worst cars and trucks compared to other brands. American made is just overrated, overpriced, very poor reliability with no resale value.
It means that each device depends on the user himself who wants to use the device in the environment of what type, weight, size and its importance for that area, and then he makes the choice of the device required for different sizes and weights according to the area where the device is to be used. .
then buy for the relevant use. .
And not everything low price will mean it's fake.
In fact, whether it is 0.5$ or 50$, the bolts may be imported from China. I know that many German tools are manufactured in China.
Impossible... bmw and arp has same steel hardness 12.8.... Sometging it is strange ;)
Il tuo test sui bulloni è stupido, paragoni un bullone alta resistenza 12.9, con bulloni di qualità e con resistenza inferiore... È normale che il 12.9, sia il migliore 🤦
Bmw has had head bolt problems in the past. Remember their v12. Head bolt stretching and self ignition due to injector fuel lines . Good vid
Test cihel je hloupost ,protože v minulosti se cihly pálily jinak.
Different color material different percentage of each material different appliance this doesn't make any sense. It's like comparing strap for 10 pounds or 100
Dude...... They are not even the same..... What you r doing is like comparing IPhone with low spec LG phone.......
Son distintas graduaciones de acero, la prueba no es válida
Right, that was the point, value wise the 5 dollar bolt is the best value, but it seriously depends on its use.
The BMW one is kinda funny, but it has the strength as it does for a reason.
My question is what bolts and nuts were used on fair rides? Will the bolt break on my roller coasterl ride when I'm at the top of the ride?
Its like to compare a Toyota corolla with a Ford Mustang，then say US make better car than Japan. lol.
From this I conclude a 10 cents bolt would be the strongest of them All 😂
This shows how the quality of the past products is not easily surpassed by today's standards.
That American bolt is also likely to come from China
How stupid.....
👎
Learn you have to compare same specifications otherwise this is useless.
Schrauben mit unbekannter Festigkeitsklasse und unterschiedlichen Längen im Zugversuch? Dazu "homemade" mit gerolltem Gewinde? Schraubenköpfe und Muttern liegen nicht plan auf!
Noch unwissenschaftlicher geht es nicht?
Its over engineered, with apr $50 bolt, the engine will blow up before these bolt snaps....
If you don't try to beat a mosquito with a hammer, Chinese products are the best, they cost less.
這留言區的評論都很理性
如果影片是被台灣側翼看到
應該就會開始無腦高潮
Dont buy bmw combustion engine, buy renault electric car
BMW makes Great combustion engines… Renault on the other hand, makes Jobs for service tech guys😂
The video cover make your channel poor once the feeling start to compare between countries.
$0.5 compare to $50, like comparing a Civic to Lamborghini.
强度等级不得统一吗？你就算0.5$的8.8螺栓也比50$的3.6螺栓强度高啊
Gostei de ver a pressão exercida sobre os tijolos, mostrou claramente que os tijolos do passado eram melhores produzidos e ficaram melhores ao longo do tempo, mesmo sofrendo as condições climáticas, são bem melhores do que os produzidos atualmente.
The comparison is meaningless without information of the steel grade and type.
Незачет😅
Тема не раскрыта. Все поломки по резьбе. У тебя перекос и закусывание. Где перекос, - там и облом😅
The truth is $50 stub can not hold the door of air planes. Ridiculous.
Die Schrauben haben alle eine andere Funktion. Die Zylinderkopfschrauben von BMW und andere Autohersteller sind zB Dehnschrauben und nur einmal zu verwenden, das ist auch richtig so. ARP sind mehrfach verwendbar, also einfach nur hart und zäh nicht so dehnbar und speziell für extreme Tuning Motoren gedacht. Eine normale 12.9 er Schraube ohne das sie eine Zylinderkopfschraube ist, wird andere Ergebnisse liefern.
Nehme ich billig Schrauben und vergleiche sie mit den härtesten die es gibt für ganz spezielle Zwecke, ist klar wer gewinnt. Übrigens gibt es auch einen deutschen Hersteller der spezielle Zylinderkopfschrauben, wie ARP herstellt, das sollte man vergleichen.
Danke für die weiterführenden Infos. Der Creator legt nicht besonders viel wert darauf, dass die Videos repräsentative Ergebnisse beinhalten (oder gar auf wissenschaftlichen Methoden basieren), sondern es sind reine Unterhaltungsvideos, in denen es vorrangig darum geht, unterschiedliche Gegenstände zu zerstören. Und besonders weiterentwickeln wird er sich bestimmt auch nicht...
LG
@@i12cu2 🤣🤣🤣
Not an apple to apple comparison .
Shouldn try stud with similar price
I felt more scared than in a horror movie
Vos tests ne sont pas valables puisque vous utilisez des classes différentes de visserie, donc résistance différentes exprimer en N.mm2 ou MPa. Les caractéristiques mécaniques de chaque matériau doivent être trouvable sur internet.
Why usa must be the best only on media start from president streets poor jukkies
이런 블로거는 나쁘거나 붓을 놓거나, 사람을 모욕하는 지능 지수이다
Isn't this a little bit bias due to the join of the head, to the shaft ? (and stresses upon the join?)
Just sayin - smart replies appreciated
Not really a 'Like for Like'' comparison
Different grade bolts have different tensile strengths. Even partial thread / full thread, Galvd or heat treatment should be taken into consideration. The experiment is really meaningless. The title is irritating and annoying.
It depends on the uses of stud. I will use cheap if light strength
วัสดุคนละชนิดกัน ส่วนผสมทางเคมีต่างกัน ความแข็งไม่เท่ากัน การใช้งานคนละประเภทกัน แบบนี้ไม่นับครับ ถ้าจะทดสอบต้องเป็นกลุ่มวัสดุที่มีค่าการผลิตจากผู้ผลิตที่ใกล้เคียงกัน
The Chinese item is 0.5$ in worth as it is cost effective.
Why any product is cheaper in price?
Obviously it has been compromised on quality
Besides a few other minor things
But biggest price reduction is due to its quality
ボルトは強度が高ければいいというものではない 問題は品質の安定性 製法により破断いちがことなっており皆それぞれ問題ないレベル 出来たら各10本程度のテストをしてほしいものです
Paper bolt vs titanium bolt level comparison 😂😂😂
Whoever makes the $50 one with only twice time stength than the 50 cents one should be embarrassed by their overpriced product.
Please compare the same material with metallurgy aspects.
This means nothing as the tensile strength of the bolts and studs are different you showed a 5.8 tensile strength which is mild steel followed by a 12.9 high tensile bolt