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UNI 8550-1984
Specification unalloyed and alloyed steel finished products, open die and drop forged, for case hardening - Qualities, requirements and tests
Material Designation Chemical Composition (%)
C 10
Min
Max
C 15
Min
Max
16MnCr5
Min
Max
20MnCr5
Min
Max
18CrMo4
Min
Max
12NiCr3
Min
Max
16NiCr11
Min
Max
16CrNi4
Min
Max
20CrNi4
Min
Max
16NiCrMo2
Min
Max
20NiCrMo2
Min
Max
18NiCrMo5
Min
Max
18NiCrMo7
Min
Max
16NiCrMo12
Min
Max
For Reference Only