20Cr25Ni20 S31020 2Cr25Ni20 - GB /T 1221-2007

Grade	20Cr25Ni20
China ISC	S31020
Old Grade
Corresponding Standard	GB /T 1221-2007 Heat-resistant Steel Bars
Classification	Austenitic Stainless Steel
Properties	Corrosion Resistance

20Cr25Ni20 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni
Minimum Value	-	-	-	-	-	24	19
Maximum Value	0.25	1.5	2	0.04	0.03	26	22

20Cr25Ni20 Mechanical Properties

diameter d mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
d≤180 (solution treatment)	≥590	≥205	≥40	≤201

1 Approximate Comparison Table

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

European Standard

Russia

United Kingdom

ISC

CNS

JIS

ASTM

UNS

ISO

DIN EN/DIN

W-Nr.

NF EN/NF

Numerical Grade

GOST

BS EN/BS

20Cr25Ni20
(2Cr25Ni20)

S31020

SUH 310

STR 310

310

S31000

X15CrNi 25-21

X15CrNiSi 25-20

1.4841

Z15CNS 25-20

X15CrNi 25-20

1.4845

20Х25Н20С2

310S31

2 Approximate Comparison Table

China	Japan	United States	International Organization for Standardization		European Standard
ISC	JIS	UNS	ISO	Numerical Grade	Numerical Grade
S31020	SUH310	S31008	X23CrNi25-21	4845-310-09-X	1.4845

20Cr25Ni20 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"!