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Grade 20MoCr 4
Germany W-Nr. 1.7321
Corresponding Standard DIN 1654-3-1989
Classification Alloy Steel
Properties Forgability
20MoCr 4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value 0.17 - 0.7 - - 0.3 0.4
Maximum Value 0.22 0.4 1 0.035 0.035 0.6 0.5
20MoCr 4 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Reduction of Area
ψ
%
Hot-rolled bars, wire rods Spheroidizing Annealing (GKZ) or Spheroidizing Annealing (GKZ) + Pickling (SH) ≤550 ≥60
Drawn products Cold Drawing (K) + Spheroidizing Annealing (GKZ) ≤530 ≥62
Drawn products Cold Drawing (K) + Spheroidizing Annealing (GKZ) + Finishing (K) ≤550 ≥62
Approximate Comparison Table
China United States International Organization for Standardization Germany European Standard
GB ISC ASTM/AISI ISO DIN EN/DIN W-Nr. EN Numerical Grade
G20CrMo B10200 A534 4118H ≈20MnCrMo4-2
(B27)
20MoCr4 		20MoCr4 1.7321 20MoCr4 1.7321
20MoCr4 Corresponding Standards(Same grade name, different standards)
1 DIN 17210-1986
20MoCr4 1.7321
2 EN 10263-3-2001
20MoCr4 1.7321
3 DIN 1654-3-1989
20MoCr 4 1.7321
4 DIN EN 10263-3-2018
20MoCr4 1.7321
5 EN 10263-3-2017
20MoCr4 1.7321
6 DIN EN ISO 683-3-2019
20MoCr4
7 ISO 683-3-2019
20MoCr4
8 DIN EN 10084-2008
20MoCr4 1.7321
9 ISO 4954-2018
20MoCr4
10 NF EN 10084-2008
20MoCr4 1.7321
11 ISO 4954-1-2024
20MoCr4

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