Grade SACM645
Corresponding Standard JIS G 4053-2016
Low-Alloyed Steels for Machine Structural Use
Classification Alloy Steel
SACM645 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo Al
Minimum Value 0.4 0.15 - - - 1.3 - - 0.15 0.7
Maximum Value 0.5 0.5 0.6 0.03 0.03 1.7 0.25 0.3 0.3 1.2
Approximate Comparison Table Nitriding Steels
China Japan International Organization for Standardization European Standard
GB JIS ISO EN Numerical Grade
38CrMoAl SACM645 41CrAlMo7-10 41CrAlMo7-10 1.8509
SACM645 Corresponding Standards(Same grade name, different standards)

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