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Grade 20NiCrMo2-2
Germany W-Nr. 1.6523
Corresponding Standard DIN EN 10084-2008
Case Hardening Steels – Technical Delivery Conditions
Classification Alloy Steel
Properties Carburizing Ability
20NiCrMo2-2 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo
Minimum Value 0.17 - 0.65 - - 0.35 0.4 0.15
Maximum Value 0.23 0.4 0.95 0.025 0.035 0.7 0.7 0.25
20NiCrMo2-2 Mechanical Properties
condition Heat Treatment or Condition
Hardness
HBW
All product shapes Soft Annealing (+A) ≤212
Bar, wire, flat steel, forging Processed to a Certain Hardness (+TH) 161~212
Bar, forging Processed to Ferrite-Perlite Structure (+FP) 149~194
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 Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST SS14 BS EN/BS
20CrNiMo A50202 SNCM220 SNCM220 SNCM220 8620 G86200 20NiCrMo2 21NiCrMo2 1.6523 20NCD2 20ХНМ 2506 805M20
2 Approximate Comparison Table Hardenability Guaranteed Structural Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST SS BS EN/BS
20CrNiMoH A50205 SNCM220H SNCM220H SNCM220H 8620H H86200 20NiCrMo2H 20NiCrMo2-2 1.6523 20NiCrMo2-2 20ХГНМ 2506 (805H17)
3 Approximate Comparison Table Case-Carburized Bearing Steel
China Taiwan, China South Korea United States International Organization for Standardization Germany France Sweden United Kingdom
GB ISC CNS KS ASTM/AISI ISO DIN EN/DIN W-Nr. NF EN/NF SKF BS EN/BS
G20CrNiMo B12200 SNCM220 SNCM220 A534 8620H 20NiCrMo2
(B28) 		21NiCrMo2 1.6523 21NiCrMo2
(20NCD2) 		SKF152 805 A20
20NiCrMo2-2 Corresponding Standards(Same grade name, different standards)
1 EN 10084-1998
20NiCrMo2-2 1.6523
2 EN 10263-3-2001
20NiCrMo2-2 1.6523
3 DIN EN 10263-3-2018
20NiCrMo2-2 1.6523
4 EN 10263-3-2017
20NiCrMo2-2 1.6523
5 DIN EN ISO 683-3-2019
20NiCrMo2-2
6 ISO 683-3-2019
20NiCrMo2-2
7 DIN EN 10084-2008
20NiCrMo2-2 1.6523
8 ISO 683-11-2012
20NiCrMo2-2
9 ISO 683-18-2014
20NiCrMo2-2
10 ISO 4954-2018
20NiCrMo2-2
11 NF EN 10084-2008
20NiCrMo2-2 1.6523 (20NCD2)
12 ISO 4954-1-2024
20NiCrMo2-2

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