Grade C45R
European Standard Steel Grade 1.1201
Corresponding Standard EN 10083-2-2006
Steels for quenching and tempering. Part 2:Technical delivery conditions for non alloy steels
Classification Carbon Steel
C45R Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo More
Minimum Value 0.42 - 0.5 - 0.02 - - - Cr+Mo+Ni ≤0.63
Maximum Value 0.5 0.4 0.8 0.03 0.04 0.4 0.4 0.1
1 Approximate Comparison Table
United States International Organization for Standardization Germany France European Standard
ASTM ISO DIN EN/DIN NF EN/NF EN Numerical Grade
1045 C45R
C45M2
Cm45 XC48H1u C45R 1.1201
2 Approximate Comparison Table
China European Standard
GB EN Numerical Grade
45 C45R 1.1201
C45R Corresponding Standards(Same grade name, different standards)

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