中文版
Home Material ISO 4954-1-2024
简体 | 繁體
Grade 20NiCrMo7
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
20NiCrMo7 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo
Minimum Value 0.17 - 0.4 - - 0.35 1.6 - 0.2
Maximum Value 0.23 0.3 0.7 0.025 0.025 0.65 2 0.25 0.3
20NiCrMo7 Mechanical Properties
diameter
d
mm		 Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Reduction of Area
ψ
% 		Hardness
HBW
2≤d≤25 +AC - -
2≤d≤25 +FP -
2≤d≤5 +AR+C+AC - -
5＜d≤25 ≤680 ≥60
2≤d≤5 +AR+C+AC+LC - -
5＜d≤25 - -
2≤d≤5 +AC+C - -
5＜d≤25 ≤700 ≥55
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 Case-Carburized Bearing Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization France European Standard Russia
GB ISC CNS JIS KS ASTM/AISI ISO NF EN/NF EN Numerical Grade GOST
G20CrNi2Mo B12210 SNCM420 SNCM420HRCH SNCM420 A534 4320H 20NiCrMo7
(B29) 		20NCD7 20NiCrMo7 1.3576 20ХН2М
(20ХНМ)
2 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion
Japan International Organization for Standardization European Standard
JIS ISO EN Numerical Grade
SNCM420HRCH 20NiCrMo7 20NiCrMo7 1.3576
20NiCrMo7 Corresponding Standards(Same grade name, different standards)
1 ISO 683-17-2014
20NiCrMo 7
2 NF A 35-565-1994
20NiCrMo7 (20NCD7)
3 ASTM A534-2014
20NiCrMo7 B29
4 DIN EN ISO 683-17-2015
20NiCrMo 7 1.3576
5 ISO 4954-2018
20NiCrMo7
6 ISO 4954-1-2024
20NiCrMo7

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!