stuart_g
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| posted on 9/2/08 at 06:34 PM |
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bolt strengths
Can anyone tell me what order in strength the different gradings are. e.g. 8.8, 10.x, 12.9, A2-70 e.t.c.
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Mole
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| posted on 9/2/08 at 06:45 PM |
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I know the "numbered" ones get stronger as the numbers get higher. I think A2 etc might be stainless bolts.
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stuart_g
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| posted on 9/2/08 at 06:58 PM |
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how do stainless grades compare to steel grades
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bassett
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| posted on 9/2/08 at 07:04 PM |
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All in newton mm squared
steel 8.8 Tensile strength - 800, yield strength 640,
steel 10.9 TS - 1040, YS - 940,
Stainless A2-70, TS - 700, YS 450,
Stainless A4-80, TS - 800, YS - 600
Straight off the top of my head  actually out of kit car mag aug 07
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jkarran
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| posted on 9/2/08 at 11:24 PM |
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Stainless is strong but can suffer from stress corrosion cracking in hot stressed environments.
<makes note to self to replace stainless threaded rod in engine mounts>
jk
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Werner Van Loock
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| posted on 10/2/08 at 09:20 AM |
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http://www.americanfastener.com/technical/grade_markings_steel.asp
http://www.clubstylus.be
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