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Grade GS-42CrMo4
Germany W-Nr. 1.7225
Corresponding Standard DIN 17205-1992
Quenched and Tempered Steel Castings for General Applications Technical Delivery Conditions
Classification Cast Steel
GS-42CrMo4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value 0.38 - 0.6 - - 0.8 0.2
Maximum Value 0.45 0.6 1 0.02 0.015 1.2 0.3
GS-42CrMo4 Mechanical Properties
thickness
t
mm		 Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Impact Energy Absorption
KV2
J
t≤150 Vacuum Quenching + Tempering 650~800 ≥400 ≥12 ≥20
150＜t≤250 Vacuum Quenching + Tempering 650~800 ≥350 ≥12 ≥20
250＜t≤400 Vacuum Quenching + Tempering 650~800 ≥320 ≥12 ≥20
New and Old Grade Replacement List
Corresponding Standard Grade
DIN 17205-1992
Grade
Germany W-Nr.
DIN EN 10293-2005
Grade
Germany W-Nr.
1 Approximate Comparison Table Structural Alloy Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Sweden United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade SS14 BS EN/BS
42CrMo A30422 SCM440 SCM440
SCM440H 		SCM440 4140
4142 		G41400
G41420 		42CrMo4 42CrMo4 1.7225 42CD4 42CrMo4 1.7225 2244 708M40
2 Approximate Comparison Table Structural Alloy Steel
China Japan South Korea United States International Organization for Standardization Germany Russia United Kingdom
GB ISC JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. GOST BS EN/BS
40CrMnMo A34402 SCM440 SCM440 4142
4140 		G41420 42CrMo4 42CrMo4 1.7225 40ХГМ 708A42
3 Approximate Comparison Table Hardenability Guaranteed Structural Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST SS BS EN/BS
42CrMoH A30425 SCM440H SCM440H SCM440H 4140H H41400 42CrMo4H 42CrMo4 1.7225 42CrMo4
(40CD4) 		≈38ХМ 2244 42CrMo4
4 Approximate Comparison Table Cold Heading Steel
China United States International Organization for Standardization Germany France
GB ISC ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF
ML42CrMo A30424 4140
A320ML7M 		G41400 42CrMo4E
(C32) 		42CrMo4 1.7225 42CD4
5 Approximate Comparison Table Cast Steel
China Germany European Standard
GB DIN EN/DIN W-Nr. EN Numerical Grade
ZG42CrMo GS-42CrMo4
GS-42CrMo4V 		1.7225 G42CrMo4 1.7231
6 Approximate Comparison Table Cast Steel
China Germany European Standard
GB DIN EN/DIN W-Nr. EN Numerical Grade
ZG42CrMo GS-34CrMo4
GS-42CrMo4 		1.7220 G34CrMo4 1.7230

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