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shaft hardness Question
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Posted by: bsb

07/07/2003, 21:14:44

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Hi

Need help on how hard and what kind of material would be best for a shaft that I am using.

Shaft is used for an assy used in racing called a coil over elimantor. The object of this part is to carry the spring for the car, it is alot like a coil over shock but there is nothing in the shock part. We started out with a w-1 shaft 5/8 in dia. and we bent it, 2nd we tried an s7 steel shaft and heat treated it to a rockwell of 50 to 57 which turned out to be to hard, and broke. This shaft and assy will carry around a 200 pound spring and will compress 3 to 4 inchs. I was thinking about using a sheffield # 20 shaft that is about 28 to 32 rockwell,  but need any help that i can get.

Thanks Jay







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Re: shaft hardness Smile
Re: shaft hardness -- bsb Post Reply Top of thread Forum
Posted by: duncad22

07/30/2003, 21:17:14

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THE S-7 MATERIAL IS FINE BUT DONNOT HEAT TREAT THE MATERIAL ALL THE WAY THROUGHT. CASE HARDEN TO A DEPTH OF .020 AND STRESS RELIEVE IT.OR TRY D-2 MATERIAL CASE HARDEN.CASE HARDEN BOTH AT 60-62 ROCKWELL.






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