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ISO 683-11-1987
heat-treatable steels, alloy steels and free-cutting steels -- part 11: case-hardening steels
Material Designation Chemical Composition (%)
20Cr4H ((4)) (20Cr4) (20Cr4HH)
Min
Max
20MnCr5H (20MnCr5) (20MnCr5HH)
Min
Max
18CrMo4H (7) (18CrMo4) (18CrMo4HH)
Min
Max
20NiCrMo2H (12) (20NiCrMo2) (20NiCrMo2HH)
Min
Max
18CrNiMo7H (18CrNiMo7) (18CrNiMo7HH)
Min
Max
C15E4 (2)
Min
Max
C16E4 (3)
Min
Max
C16M2 (3a)
Min
Max
For Reference Only