305 Stainless Steel - or something like it...
305 Stainless Steel - or something like it...
(OP)
Hi;
I need to have a part machined out of a steel that's close to 305 Stainless Steel. Our supplier tells me 305 is going to be really expensive (it's apparently not that common), but our customer wants something a lot like it. Now, I'm no chemist and don't work with metals a lot at all. Can anyone help me with suggestions; what would be close to 305 S.S.? 302? 304? 316? And while we're at it, what do those numbers mean?
Thanks much, sorry for my ignorance!
Ron
I need to have a part machined out of a steel that's close to 305 Stainless Steel. Our supplier tells me 305 is going to be really expensive (it's apparently not that common), but our customer wants something a lot like it. Now, I'm no chemist and don't work with metals a lot at all. Can anyone help me with suggestions; what would be close to 305 S.S.? 302? 304? 316? And while we're at it, what do those numbers mean?
Thanks much, sorry for my ignorance!
Ron





RE: 305 Stainless Steel - or something like it...
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http://www.ssina.com/publications/design.html
http://www.matweb.com
RE: 305 Stainless Steel - or something like it...
C (0.12), Cr (17 - 19), Mn (2), Ni (10-13), P (0.045), S (0.03), Si (1). 305 was built up from the basic type with a higher Ni for less work hardening. 304 has a chemical composition of (%): C (0.08), Mn (2), P (0.045), S (0.03), Si (1), Cr (19), Ni (9.25). Unfortunately, without knowing the final application nobody is going to recommend a different material, no matter how close the compositions are. Check out MatWeb for more info.
As far as the alloy designations go here's a (hopefully) brief explanation. Stainless steels are identified in the US by the 3-digit system that originated with AISI. The first digit indicates the classification by composition type. The 200 series has Cr, Ni, and Mn as the primary alloying elements. The 300 series contains Cr-Ni alloys. The 400 series are Cr alloys. Letters that follow the 3-digit number indicate some addition or subtraction to the base alloy. For example, 416Se has Se added for easier machining.
Hope the information is useful.