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Home Material SAE J 1268-2010
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USA UNS H41180
SAE
Steel Number		 4118H
Corresponding Standard SAE J 1268-2010
Hardenability Bands for Carbon and Alloy H Steels
Classification Alloy Steel
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo
Minimum Value 0.17 0.15 0.6 - - 0.3 - - 0.08
Maximum Value 0.23 0.35 1 0.03 0.04 0.7 0.25 0.35 0.15
1 Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
15CrMoH A30155 SCM415H SCM415H SCM415H ≈4118H ≈H41180 16CrMo5H 15CrMo5 1.7262 (15CD35) 15ХМ 15CrMo5
2 Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
20CrMnH A30205 SCM420H SCM420H SCM420H 4118H H41180 18CrMo4H 18CrMo4 1.7243 18CrMo4
(20CD4) 		20ХМ 18CrMo4
3 Approximate Comparison Table
China United States International Organization for Standardization Germany France Russia United Kingdom
GB ISC ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
20CrMnMoH A34205 4118H H41180 20MnCr5H ≈20MnCr5 ≈1.7147 (20MC5H) 25ХГМ (708H20)

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