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Chrome Alloy (52CrMoV4 1.7701) vs. 5160 vs. 6150 For Spring Material

Chrome Alloy (52CrMoV4 1.7701) vs. 5160 vs. 6150 For Spring Material

Chrome Alloy (52CrMoV4 1.7701) vs. 5160 vs. 6150 For Spring Material

(OP)
All,

I am looking for the pros and cons comparing 52CrMoV4 1.7701, 5160, and 6150 for spring application.

Currently have a requirement for 5,000 minimum cycle life, with stress levels at 136,000 lbs/in^2 at the top of its working deflection (bar dia of 2.687"). Possible saline conditions. Temperatures from 34F-151F.

Thanks in advance,

mgh

RE: Chrome Alloy (52CrMoV4 1.7701) vs. 5160 vs. 6150 For Spring Material

Afaik 52CrMoV4 is same as 6150 which has a tad more Vanadium than 5160.

RE: Chrome Alloy (52CrMoV4 1.7701) vs. 5160 vs. 6150 For Spring Material

(OP)
So in terms of crack growth, fatigue, and modulus all three are pretty similar. No real difference then?

RE: Chrome Alloy (52CrMoV4 1.7701) vs. 5160 vs. 6150 For Spring Material

Don't think so. 6150 has got more tensile strength than 5160. Others may confirm please.

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