S43400 - ASTM A554-2026

USA UNS	S43400
AISI American Iron and Steel Institute	434
Corresponding Standard	ASTM A554-2026 Welded Stainless Steel Mechanical Tubing
Classification	Ferritic Stainless Steel

Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo
Minimum Value	-	-	-	-	-	16	0.75
Maximum Value	0.12	1	1	0.04	0.03	18	1.25

Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
Annealing	≥414	≥241	≥20	HB：≤190 HRB：≤90

1 Approximate Comparison Table Ferritic Stainless Steel

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

European Standard

Sweden

United Kingdom

ISC

CNS

JIS

ASTM/AISI

UNS

ISO

Numerical Grade

DIN EN/DIN

W-Nr.

NF EN/NF

Numerical Grade

BS EN/BS

10Cr17Mo
(1Cr17Mo)

S11790

434

SUS 434

STS 434

434

S43400

X6CrMo 17-1
9c
(ISO 683-13-1986)

4113-434-00-I

X6CrMo 17-1
(X6CrMo 17)

1.4113
1.4113

Z8CD 17-01

X6CrMo 17-1

1.4113

2325

434S17
434S19

2 Approximate Comparison Table Stainless Steels for Cold Heading and Cold Extruding

China		Japan	United States		International Organization for Standardization		European Standard
GB	ISC	JIS	ASTM/AISI	UNS	ISO	Numerical Grade	EN	Numerical Grade
10Cr17Mo (1Cr17Mo)	S11790	SUS434	434	S43400	X6CrMo17-1	4113-434-00-I	X6CrMo17-1	1.4113

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