TECHNICAL INFO
440C Stainless
Typical Analysis
C 1.03  Mn .44  P.025  S.001  Si .65  Ni .30  Cr 16.68  Mo .50  Cu .16
Hardness
R/B 92-95

Heat Treating Information
Initial Quench Temperature - 1850F-1950F max
Hold for 30-45 minutes
Quench in warm oil or air cool
Do not overheat (too much time or too high temperature)

Hardening & Tempering Information
300F - 1 hour - R/C 60
500F - 1 hour - R/C 57
800F - 1 hour - R/C 56

ATS-34 Stainless
Typical Analysis
C 1.02  Mn .40  P.025  S.002  Si .24  Cr 13.66  Mo 3.52
Hardness
R/B 97

Heat Treating Information
Initial Quench Temperature - 1850F-1958F max
Hold for 30 minutes
Quench in warm oil

Hardening & Tempering Information
572F - 1 hour - R/C 56-57
932F - 1 hour - R/C 58-59