S42020 - ASTM A959-2019

USA UNS	S42020
AISI American Iron and Steel Institute	420F
Corresponding Standard	ASTM A959-2019 Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
Classification	Martensitic Stainless Steel

Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo
Minimum Value	0.3	-	-	-	0.15	12	-
Maximum Value	0.4	1	1.25	0.06	-	14	0.5

• Unless otherwise indicated, a grade designation originally assigned by the American Iron and Steel Institute (AISI).

1 Approximate Comparison Table Martensitic Stainless Steel

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

European Standard

ISC

CNS

JIS

ASTM

UNS

ISO

DIN EN/DIN

W-Nr.

NF EN/NF

Numerical Grade

Y30Cr13
(Y3Cr13)

S42037

420F

SUS 420F

STS 420F

420F

S42000

X29CrS 13

1.4029

Z30CF 13

X29CrS 13

1.4029

2 Approximate Comparison Table Martensitic Stainless Steel

China	Japan	United States	International Organization for Standardization		European Standard
ISC	JIS	UNS	ISO	Numerical Grade	Numerical Grade
S42037	SUS420F	S42020	X33CrS13	4029-420-20-I	1.4029

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