Grade 12CrMo4
European Standard Steel Grade 1.7201
Corresponding Standard EN 10263-3-2017
Steel rod, bars and wire for cold heading and cold extrusion Part 3: Technical delivery conditions for steels for case hardening steels
Classification Alloy Steel
12CrMo4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Cu Mo
Minimum Value 0.1 - 0.6 - - 0.9 - 0.15
Maximum Value 0.15 0.3 0.9 0.025 0.025 1.2 0.25 0.25
12CrMo4 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa
Reduction of Area
ψ
%
Hardness
HBW
Bars; 5<d≤40 Processed to Ferrite-Pearlite Structure and Hardness Range (+FP) 135~185
Bars; 5<d≤40 Spheroidizing (+AC) ≤500 ≥62
Bar, wire; 2<d≤5 Untreated, Cold Drawn, Spheroidizing Treatment (+U+C+AC) ≤500 -
Bar, wire; 5<d≤40 Untreated, Cold Drawn, Spheroidizing Treatment (+U+C+AC) ≤480 ≥64
Bar, wire; 5<d≤40 Untreated, Cold Drawn, Spheroidizing Treatment, and Tempered Rolling (+U+C+AC+LC) ≤520 ≥62
Approximate Comparison Table
International Organization for Standardization European Standard
ISO EN Numerical Grade
12CrMo4 12CrMo4 1.7201
12CrMo4 Corresponding Standards(Same grade name, different standards)

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