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Home Material DIN 17210-1986
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Grade 20MnCr5
Germany W-Nr. 1.7147
Corresponding Standard DIN 17210-1986
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
20MnCr5 Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
Rough, Bar Steel Processed to Have Certain Shearability (C) ≤255
All product shapes Softening Annealing (G) ≤217
Bars, wire, plates, forgings; d≤150 Processed to a Certain Strength (BF) 170~217
Bar stock, plate, forgings; d≤60 Processed to Ferrite-Perlite Structure (BG) 152~201
New and Old Grade Replacement List
Corresponding Standard Grade
DIN 17210-1986
Grade
Germany W-Nr.
DIN EN 10084-2008
Grade
Germany W-Nr.
DIN EN ISO 683-3-2019
Grade
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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