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Grade GS-25CrMo4
Germany W-Nr. 1.7218
Corresponding Standard DIN 17205-1992
Quenched and Tempered Steel Castings for General Applications Technical Delivery Conditions
Classification Cast Steel
GS-25CrMo4 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value 0.22 - 0.5 - - 0.8 0.2
Maximum Value 0.29 0.6 0.8 0.02 0.015 1.2 0.3
GS-25CrMo4 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≤250 Vacuum Quenching + Tempering 550~700 ≥300 ≥16 ≥27
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 Japan United States Germany France European Standard Russia Sweden
YB ISC JIS ASTM DIN EN/DIN W-Nr. L-Nr. NF EN/NF EN Numerical Grade GOST SS14
25CrMo A30252 SCM430 4130 25CrMo4 1.7218 1.7214 25CD4 25CrMo4 1.7218 30ХМ 2225
2 Approximate Comparison Table Cold Heading Steel
China United States Germany France Russia United Kingdom
GB ISC ASTM/AISI UNS DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
ML30CrMo A30304 4130 G41300 ≈25CrMo4 1.7218 30CD4 30ХМА 9/0
3 Approximate Comparison Table Cast Steel
China Germany European Standard
GB DIN EN/DIN W-Nr. EN Numerical Grade
ZG20CrMo GS-25CrMo4
GS-25CrMo4V 		1.7218 G26CrMo4 1.7221

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