CFM8 cast equivalent of 316 SS 1

[MFinn]

I understand CFM8 is the cast equivalent of 316 SS. Does anyone know of a standard or other authoritative source that confirms this?

 

[AJohnson]

I believe you mean CF-8M, which has UNS No. J92900. The ASM Metals Handbook lists both CF-8M and CF-12M as being the nominal cast equivalents of 316SS even though CF-12M has slightly higher C content than CF-8M. It also notes that this is just a nominal equivalent between wrought and cast products. The chemistries of the two metals are not identical. CF-8M has higher Cr, S, and Si values and lower Mn, P, and Ni values than 316SS.

 

[MJCronin]

MFinn,

I believe what you are looking for is an ASTM Standard.

A cast stainless steel valves body is purchased to: ASTM A351 CF-8M.

All chemistry and strength properties are specified in ASTM A351.

Try

http://www.astm.org

Good luck!!


MJC

 

[arunmrao]

ASTM A743 also lists out the chemical and mechanical properties of CF8M grade of stainless steel. Generally we refer CF8M as a cast equivalent of 316 grade but strictly there are differences in chemistry.