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Grade 20NiCrMo2-2
Corresponding Standard ISO 4954-1-2024
Steels for cold heading and cold extruding - Technical delivery conditions - Part1: Non-alloy and alloy steels
Classification Alloy Steel
20NiCrMo2-2 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo
Minimum Value 0.17 - 0.65 - - 0.35 0.4 - 0.15
Maximum Value 0.23 0.3 0.95 0.025 0.025 0.7 0.7 0.25 0.25
20NiCrMo2-2 Mechanical Properties
diameter
d
mm		 Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Reduction of Area
ψ
% 		Hardness
HBW
5＜d≤40 +AC ≤590 ≥60
5＜d≤40 +FP 149~194
2≤d≤5 +AR+C+AC ≤590 ≥62
5＜d≤40 ≤570 ≥62
2≤d≤5 +AR+C+AC+LC ≤630 ≥60
5＜d≤40 ≤610 ≥60
5＜d≤10 +AC+C ≤720 ≥57
10＜d≤40 ≤710 ≥57
①+AR=as hot-rolled；+AR or +PE=as hot-rolled or peeled；+AR+C=as hot-rolled+cold drawn；+AR+C+AC=as hot-rolled+cold drawn+spheroidized；+AR+C+AC+LC=as hot-rolled+cold drawn+spheroidized+skin passed；+AC= spheroidized ；+AC or +AC+PE=spheroidized or spheroidized+peeled；+AC+C=spheroidized +cold drawn；+FP=treated to ferrite-pearlite structure and hardness range；+AC+C+AC=spheroidized +cold drawn + spheroidized；+AC+C+AC+LC=spheroidized +cold drawn + spheroidized + skin passed
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
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

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