spring steel
spring steel
(OP)
can I refer you to my 3 questions here?
http://www .eng-tips. com/viewth read.cfm?q id=132056& amp;page=1
thanks
http://www
thanks
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RE: spring steel
I am not familar with either Brittish spec's or torsion bar materials, but I'll give it my best shot.
0.15% Ni is usually considered residual. Unless otherwise restricted, Ni is typically held to residual limits of 0.25% for AISI steels. Another way to put this is that with no mention of the Ni content, a maximum limit of 0.25% Ni is permissible for AISI steels. I would suspect the Brittish steel specifications would have similar limits.
As far as what effect the 0.15% Ni would have on the spring, it would have very little effect at this concentration. A slight increase in hardenability and toughness (generally, both good things for a spring application), but even that effect would not be very noticable.
As to why Nickel is not used in spring steel compositons, I would guess that it isn't cost effective. Nickel is expensive. I believe spring steels are typically higher carbon, so with an effective amount of Nickel, you could run into a retained austenite problem that would require extra processing (cryogenic) to address. But, that is just a guess as springs aren't really my area of expertise.
RE: spring steel
RE: spring steel