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Grade 20MnCr5
European Standard Steel Grade 1.7147
Corresponding Standard EN 10084-1998
Case hardening steels. Technical delivery conditions
Classification Alloy Steel
Properties Carburizing Ability
20MnCr5 Chemical Element Composition Content (%)
Component C Si Mn P S Cr
Minimum Value 0.17 - 1.1 - - 1
Maximum Value 0.22 0.4 1.4 0.035 0.035 1.3
1 Approximate Comparison Table Structural Alloy Steel
China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia
GB ISC JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST
20CrMn
20CrMnH 		A22202 SMnC420 SMnC420 5120 G51200 20MnCr5 20MnCr5 1.7147 20MC5 20MnCr5 1.7147 20ХГ
2 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
3 Approximate Comparison Table Hardenability Guaranteed Structural Steel
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)
4 Approximate Comparison Table Structural Alloy Steel
China Japan United States International Organization for Standardization Germany France European Standard Russia
GB JIS SAE ISO W-Nr. NF EN/NF EN Numerical Grade GOST
20CrMn
20CrMnTi
20MnCr 		SMnC420H 5120 20MnCr5 20MnCr5 20MC5 20MnCr5 1.7147 18KHG
20MnCr5 Corresponding Standards(Same grade name, different standards)
1 DIN 17210-1986
20MnCr5 1.7147
2 ISO 683-18-1996
20MnCr5
3 EN 10084-1998
20MnCr5 1.7147
4 ISO 683-11-1987
20MnCr5 20MnCr5H 20MnCr5HH 20MnCr5HL
5 DIN 17230-1980
(20MnCr5) 19MnCr5 1.3523 (1.7147)
6 DIN EN ISO 683-3-2019
20MnCr5
7 ISO 683-3-2019
20MnCr5
8 DIN EN 10084-2008
20MnCr5 1.7147
9 ISO 683-11-2012
20MnCr5
10 ISO 683-18-2014
20MnCr5
11 UNI 8550-1984
20MnCr5
12 NF EN 10084-2008
20MnCr5 1.7147 (20MC5)
13 ISO 4954-1-2024
20MnCr5

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