Grade 33CrMoV 12-9
Corresponding Standard ISO 683-17-2014
Heat-Treated Steels, Alloy Steels and Free-Cutting Steels - Part 17: Ball and Roller Bearing Steels
Classification Bearing Steel
33CrMoV 12-9 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo V
Minimum Value 0.29 0.1 0.4 - - 2.8 - - 0.7 0.15
Maximum Value 0.36 0.4 0.7 0.025 0.015 3.3 0.3 0.1 1.2 0.25
Approximate Comparison Table Nitriding Steels
International Organization for Standardization European Standard
ISO EN Numerical Grade
33CrMoV12-9 33CrMoV12-9 1.8522

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