Grade 23MnB4
Corresponding Standard ISO 4954-2018
Steels for cold heading and cold extruding
Classification Alloy Steel
23MnB4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Cu B
Minimum Value 0.2 - 0.9 - - - - 0.0008
Maximum Value 0.25 0.3 1.2 0.025 0.025 0.3 0.25 0.005
23MnB4 Mechanical Properties
diameter
d
mm
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Reduction of Area
ψ
%
5<d≤25 +AR or +PE ≤600 ≥60
5<d≤25 +AC or +AC+PE ≤520 ≥64
5<d≤10 +AR+C ≤700 ≥55
10<d≤25 +AR+C ≤690 ≥55
2<d≤5 +AR+C+AC ≤510 ≥66
5<d≤25 +AR+C+AC ≤500 ≥66
2<d≤5 +AR+C+AC+LC ≤550 ≥64
5<d≤25 +AR+C+AC+LC ≤540 ≥64
5<d≤10 +AC+C ≤620 ≥59
10<d≤25 +AC+C ≤610 ≥59
Approximate Comparison Table
International Organization for Standardization European Standard
ISO EN Numerical Grade
23 MnB4 23 MnB4 1.5535

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