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Grade 5120H
Corresponding Standard ASTM A534-2014
Carburizing Steels for Anti-Friction Bearings
Classification Alloy Steel
5120H Chemical Element Composition Content (%)
Component C Si Mn P S Cr Cu Al O
Minimum Value 0.17 0.15 0.6 - - 0.6 - - -
Maximum Value 0.23 0.35 1 0.025 0.015 1 0.3 0.05 0.002
1 Approximate Comparison Table Hardenability Guaranteed Structural Steel
China Japan South Korea United States International Organization for Standardization Germany France Russia United Kingdom
GB ISC JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
20CrH A20205 ≈SCr420H ≈SCr420H 5120H H51200 ≈20Cr4H 20Cr4 1.7027 (20MC5) 20Х (527H17)
2 Approximate Comparison Table Hardenability Guaranteed Structural Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany Russia
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. GOST
20Cr1H A20215 SCr420H SCr420H SCr420H ≈5120H ≈H51200 20Cr4H ≈20Cr4 ≈1.7027 20Х
3 Approximate Comparison Table Hardenability Guaranteed Structural Steel
China Japan South Korea United States International Organization for Standardization Germany France Russia United Kingdom
GB ISC JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
16CrMnH A22165 ≈SMnC420H ≈SMnC420H ≈5120H ≈H51200 16MnCr5H 16MnCr5 1.7131 16MnCr5 ≈18ХГ 16MnCr5
4 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
20CrMnH A22205 SMnC420H SMnC420H SMnC420H 5120H H51200 20MnCr5H 20MnCr5 1.7147 20MnCr5 18ХГ 20MnCr5
5120H Corresponding Standards(Same grade name, different standards)
1 ASTM A 304-2004
5120H H51200
2 SAE J 1268-2010
5120H H51200
3 ASTM A304-2016
5120H H51200
4 ASTM A534-2014
5120H

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