Grade
34CrMo4
European Standard Steel Grade
1.7220
Corresponding Standard
EN 10263-4-2017
Steel Rod, Bars and Wire For Cold Heading and Cold Extrusion Part 4: Technical Delivery Conditions for Steels for Quenching and Tempering
Classification
Alloy Steel
34CrMo4 Chemical Element Composition Content (%)
Component
C ⓓ
Si ⓔ
Mn
P
S
Cr
Cu
Mo
Minimum Value
0.3
-
0.6
-
-
0.9
-
0.15
Maximum Value
0.37
0.3
0.9
0.025
0.025
1.2
0.25
0.3
34CrMo4 Mechanical Properties
condition
Heat Treatment or Condition
Tensile Strength σb
Mpa
Reduction of Area ψ
%
Wire; 2<d≤5
Spheroidizing + Cold Drawn + Spheroidizing (+AC+C+AC)
≤590
≥62
Wire; 5<d≤40
Spheroidizing + Cold Drawn + Spheroidizing (+AC+C+AC)
≤580
≥62
Bars, wires; 2<d≤5
Spheroidizing + Cold Drawn + Spheroidizing + Quenched Rolling (+AC+C+AC+LC)
≤630
≥60
Bars, wires; 5<d≤40
Spheroidizing + Cold Drawn + Spheroidizing + Quenched Rolling (+AC+C+AC+LC)
≤620
≥60
Bars, rods, wires; 5<d≤40
Spheroidizing or Spheroidizing + Rotary Peeling (+AC or +AC+PE)
≤600
≥60
1 Approximate Comparison Table Structural Alloy Steel
2 Approximate Comparison Table Structural Alloy Steel
3 Approximate Comparison Table Cold Heading Steel
4 Approximate Comparison Table Structural Alloy Steel
5 Approximate Comparison Table Cast Steel
6 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion
7 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion
Japan
International Organization for Standardization
European Standard
JIS
ISO
EN
Numerical Grade
SCM435
SCM435H
34CrMo4
34CrMo4
1.7220
34CrMo4 Corresponding Standards(Same grade name, different standards)
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