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Material
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