AISI 430
AISI 430
(OP)
According to information I have, and more that I found on the web, AISI 430 is a ferritic stainless steel that "does not respond to hardening by heat treatment".
But I've been passed a supplier specification that states, "Material - AISI 430, heat treated".
Do they now something I don't?
Anyone any extra knowledge to share?
But I've been passed a supplier specification that states, "Material - AISI 430, heat treated".
Do they now something I don't?
Anyone any extra knowledge to share?





RE: AISI 430
Heat treatments like annealing, stress relieving etc. are possible in the production process.
http://www.welding-advisers.com/
RE: AISI 430
However, the part specified is a connecting pin for a forged link chain which would normally be a case hardened alloy steel, so I assumed(*) they meant "hardened"!
A sample pin now in my possession I've checked at Rc42 which seems a bit hard for 430. Maybe a chemical analysis is called for to clarify.
*
ASSUME
makes an ASS of U and ME
RE: AISI 430
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: AISI 430
But 430 at HRC 42? That just ain't right...
RE: AISI 430
Don't think its 4130. The pin I've got has been in service and is clearly corrosion resistant.
lgearhart
431 is a possibility. One reference I've found for 431 states "...capable of being through hardened up to Rc44".
Really, only a chemical analysis will establish what I've got.
Was it a typo? Well who knows, but the sample link that came with the pin doesn't conform to the written specification so anything is possible!!
Thanks for the comments.
RE: AISI 430
The low C version is a ferritic.
The high C is a 'weak' martensitic. It will harden with Q&T.
In the mid range you get some martensite forming, but there is so little C that it isn't very hard.
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