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EN ISO 683-2-2018
Heat-treatable steels,alloy steels and free-cutting steels--Part 2:Alloy steels for quenching and tempering
Material Designation Chemical Composition (%)
20MnB5
Min
Max
25CrMo4
Min
Max
25CrMoS4
Min
Max
27MnCrB5-2
Min
Max
30CrNiMo8 (1.6580)
Min
Max
30MnB5
Min
Max
33MnCrB5-2
Min
Max
34Cr4
Min
Max
34CrS4
Min
Max
34CrMo4
Min
Max
34CrMoS4
Min
Max
34CrNiMo6
Min
Max
36CrNiMo4
Min
Max
37Cr4
Min
Max
37CrS4
Min
Max
39MnB5
Min
Max
39MnCrB6-2
Min
Max
41Cr4
Min
Max
41CrS4
Min
Max
41CrNiMo2
Min
Max
41CrNiMoS2
Min
Max
42CrMo4
Min
Max
42CrMoS4
Min
Max
50CrMo4
Min
Max
51CrV4
Min
Max
For Reference Only