USA UNS H43200
SAE
Steel Number
4320H
Corresponding Standard SAE J 1268-2010
Hardenability Bands for Carbon and Alloy H Steels
Classification Alloy Steel
Properties Quench Hardness
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo
Minimum Value 0.17 0.15 0.4 - - 0.35 1.55 - 0.2
Maximum Value 0.23 0.35 0.7 0.03 0.04 0.65 2 0.35 0.3
Approximate Comparison Table Hardenability Guaranteed Structural Steel
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
20CrNi2MoH A50215 SNCM420H SNCM420H SNCM420H 4320H H43200 18CrNiCrMo7H 20NiCrMoS6-4 1.6571 20NiCrMo6-4 20ХН2М (802H17)

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