Is ASTM A 234 WP12 Equal To AISI 4140 1

[mmbguide]

hello

Is "ASTM A 234 WP12" equal To "AISI 4140"?

thank you

 

[DVWE]

No, it is not.

Chemically with Chromium and Molybdenum, they are close, but the big difference between the two is the amount of Carbon.

WP12: C = 0.05-0.20%
4140: C = 0.38-0.43%



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