Grade 18CrMo4H
ISO Numeric Designation 7
Other Names
Corresponding Standard ISO 683-11-1987
heat-treatable steels, alloy steels and free-cutting steels -- part 11: case-hardening steels
Classification Alloy Steel
Properties Carburizing Ability
18CrMo4H Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value 0.15 0.15 0.6 - - 0.9 0.15
Maximum Value 0.21 0.4 0.9 0.035 0.035 1.2 0.25
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

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