80Cr20Si2Ni S48380 8Cr20Si2Ni - GB /T 1221-2007

Grade	80Cr20Si2Ni
China ISC	S48380
Old Grade
Corresponding Standard	GB /T 1221-2007 Heat-resistant Steel Bars
Classification	Martensitic Stainless Steel

80Cr20Si2Ni Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni
Minimum Value	0.75	1.75	0.2	-	-	19	1.15
Maximum Value	0.85	2.25	0.6	0.03	0.03	20.5	1.65

80Cr20Si2Ni Mechanical Properties

diameter d mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
d≤75	Quenching + Tempering ≥885	Quenching + Tempering ≥685	Quenching + Tempering ≥10	Quenching + Tempering ≥262
				Annealing ≤321

1 Approximate Comparison Table Martensitic Heat-Resistant Steel

China		Taiwan, China	Japan	South Korea	United States		Germany		France	United Kingdom
GB	ISC	CNS	JIS	KS	UNS	SAE	DIN EN/DIN	W-Nr.	NF EN/NF	BS EN/BS
80Cr20Si2Ni (8Cr20Si2Ni)	S48380	SUH 4	SUH 4	STR 4	S65006	HNV6	X80CrNiSi 20	1.4747	Z80CSN 20-02	443S65

2 Approximate Comparison Table Valve Steel

China

Taiwan, China

Japan

South Korea

United States

Germany

France

European Standard

Russia

United Kingdom

ISC

CNS

JIS

Commercial Grade

UNS

SAE

DIN EN/DIN

W-Nr.

NF EN/NF

Numerical Grade

GOST

BS EN/BS

80Cr20Si2Ni
(8Cr20Si2Ni)

S48380

SUH 4

STR 4

Sil XB

S65006

HNV6

X80CrSiNi 20

1.4747

Z80CNS 20-02

X80CrSiNi 20

1.4747

80Х20Н2С2

443S65

3 Approximate Comparison Table Martensitic Stainless Steel

China	Japan	International Organization for Standardization		European Standard
ISC	JIS	ISO	Numerical Grade	Numerical Grade
S48380	SUH4	X80CrSiNi20-2	4766-440-77-X	(1.4766)

80Cr20Si2Ni Corresponding Standards(Same grade name, different standards)

1	GB /T 20878-2007
	80Cr20Si2Ni S48380 (8Cr20Si2Ni)
2	GB /T 1221-2007
	80Cr20Si2Ni S48380 (8Cr20Si2Ni)
3	GB /T 12773-2021
	80Cr20Si2Ni XB
4	GB /T 20878-2024
	80Cr20Si2Ni S44040 (S48380) (8Cr20Si2Ni)

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