SUH1 - JIS G 4311-2019

Grade	SUH1
Corresponding Standard	JIS G 4311-2019 Heat-Resisting Steel Bars and Wire Rods
Classification	Martensitic Stainless Steel
Properties	Corrosion Resistance

SUH1 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.4	3	-	-	-	7.5	-	-
Maximum Value	0.5	3.5	0.6	0.03	0.03	9.5	0.6	0.3

SUH1 Mechanical Properties

	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
Rod	Annealing					≤269
Bar; d≤75mm	Quenching + Tempering	≥930	≥685	≥15	≥35	≥269

1 Approximate Comparison Table Valve Steel

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

European Standard

Russia

United Kingdom

ISC

CNS

JIS

Commercial Grade

UNS

SAE

ISO

DIN EN/DIN

W-Nr.

NF EN/NF

Numerical Grade

GOST

BS EN/BS

42Cr9Si2
(4Cr9Si2)

S48040

SUH 1

STR 1

Sil 1

S65007

HNV3

X45CrSi 9-3

1.4718

Z45CS 9

X45CrSi 8

1.4718

40Х9С2

401S45

2 Approximate Comparison Table Martensitic Stainless Steel

China		Japan	European Standard
GB	ISC	JIS	EN	Numerical Grade
45Cr9Si3	S48045	SUH 1	X45CrSi3	1.4718

SUH1 Corresponding Standards(Same grade name, different standards)

1	JIS G 4311-1991
	SUH1
2	JIS G 4311-2019
	SUH1

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