4 - ISO 683-13-1986

Grade	4
Corresponding Standard	ISO 683-13-1986 Heat-treatable steels,alloy steels and free-cutting steels--Part 13: Wrought stainless steels
Classification	Martensitic Stainless Steel
Properties	Corrosion Resistance Forgability Weldability

4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni
Minimum Value	0.16	-	-	-	-	12	-
Maximum Value	0.25	1	1	0.04	0.03	14	1

Approximate Comparison Table Martensitic Stainless Steel

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

European Standard

Russia

Sweden

United Kingdom

ISC

CNS

JIS

ASTM

UNS

ISO

Numerical Grade

DIN EN/DIN

W-Nr.

NF EN/NF

Numerical Grade

GOST

BS EN/BS

20Cr13
(2Cr13)

S42020

420J1

SUS 420J1

STS 420J1

420

S42000

X20Cr 13
4
(ISO 683-13-1986)

4021-420-00-I

X20Cr 13

1.4021

Z20C 13

X20Cr 13

1.4021

20Х13

2303

420S37

4 Corresponding Standards(Same grade name, different standards)

1	ISO 683-11-1987
	(4) 20Cr4H 20Cr4 20Cr4HH 20Cr4HL
2	ISO 683-14-2004
	(4) 55SiCr6-3
3	ISO 683-13-1986
	4
4	ISO 683-16-1976
	4
5	ASTM B122/B122M-2016
	(4) B122 C77000
6	AS 1442-2007
	4
7	ASTM A485-2014
	4 A485 Grade 4 A485 Gr.4

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