20Cr 4 - ISO 683-17-2014

Grade	20Cr 4
Corresponding Standard	ISO 683-17-2014 Heat-treated steels, alloy steels and free-cutting steels - Part 17: Ball and roller bearing steels
Classification	Bearing Steel

20Cr 4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Cu	Al	O ^①
Minimum Value	0.17	-	0.6	-	-	0.9	-	-	-
Maximum Value	0.23	0.4	0.9	0.025	0.015	1.2	0.3	0.05	0.002

1 Approximate Comparison Table structural alloy steel

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

European Standard

Russia

United Kingdom

ISC

CNS

JIS

ASTM/AISI

UNS

ISO

DIN EN/DIN

W-Nr.

NF EN/NF

Numerical Grade

GOST

BS EN/BS

20Cr
20CrH

A20202

SCr420

SCr420
SCr420H
SCR420HRCH

SCr420

5120

G51200

20Cr4

1.7027

18C3

20Cr4

1.7027

20Х

527A20

2 Approximate Comparison Table

Japan	International Organization for Standardization	European Standard
JIS	ISO	EN	Numerical Grade
SCR420HRCH	20Cr4	20Cr4	1.7027

20Cr4 Corresponding Standards(Same grade name, different standards)

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