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Grade 20NiCrMo2-2
Corresponding Standard ISO 683-18-2014
Heat-treatable Steels, Alloy Steels and Free-Cutting Steels - Part 18: Bright Steel Products
Classification Alloy Steel
20NiCrMo2-2 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo
Minimum Value 0.17 0.15 0.65 - - 0.35 0.4 - 0.15
Maximum Value 0.23 0.4 0.95 0.025 0.035 0.7 0.7 0.4 0.25
20NiCrMo2-2 Mechanical Properties
Heat Treatment or Condition
Hardness
HBW
5≤t≤10 +A+cold drawn (+A+C) ≤270
10＜t≤16 +A+cold drawn (+A+C) ≤260
16＜t≤100 +A+cold drawn (+A+C) ≤255
16＜t≤100 +A+ peeled (+A+SH) ≤212
16＜t≤100 +FP+ peeled (+FP+SH) 149~194
16＜t≤40 +FP+cold drawn (+FP+C) 149~240
40＜t≤100 +FP+cold drawn (+FP+C) 149~235
1 Approximate Comparison Table Structural Alloy Steel
China Japan International Organization for Standardization Germany France European Standard Russia United Kingdom
GB JIS ISO DIN EN/DIN NF EN/NF EN Numerical Grade GOST BS EN/BS
20CrNiMoH SNCM220
SNCM220H 		20NiCrMo2-2
20NiCrMo2 		21NiCrMo2 20NCD2 20NiCrMo2-2 1.6523 20KHGNM 805M20
2 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion
China Japan International Organization for Standardization European Standard
GB JIS ISO EN Numerical Grade
20CrNiMoH SNCM220
SNCM220H 		20NiCrMo2-2 20NiCrMo2-2 1.6523
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
13 EN 10084-2008
20NiCrMo2-2 1.6523

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