G51400 - ASME SA-29/SA-29M-2023

	G51400
AISI American Iron and Steel Institute	5140
Corresponding Standard	ASME SA-29/SA-29M-2023 General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
Classification	Alloy Steel

Chemical Element Composition Content (%)

Component	C	Si ^①	Mn	P	S	Cr	Ni ^②	Cu ^②	Mo ^②
Minimum Value	0.38	0.15	0.7	-	-	0.7	-	-	-
Maximum Value	0.43	0.35	0.9	0.035	0.04	0.9	0.25	0.35	0.06

1 Approximate Comparison Table Structural Alloy Steel

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

European Standard

Russia

Sweden

United Kingdom

ISC

CNS

JIS

ASTM/AISI

UNS

ISO

DIN EN/DIN

W-Nr.

NF EN/NF

Numerical Grade

GOST

SS₁₄

BS EN/BS

40Cr

A20402

SCr440

SCr440
SCr440H

SCr440

5140

G51400

41Cr4

1.7035

42C4

41Cr4

1.7035

40Х

2245

530A40
530M40

2 Approximate Comparison Table Cold Heading Steel

China		United States		International Organization for Standardization	Germany		France	Russia	United Kingdom
GB	ISC	ASTM/AISI	UNS	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	GOST	BS EN/BS
ML40Cr	A20404	5140	G51400	41Cr4E (C16)	41Cr4	1.7035	38C4 42C4	40Х	3/2

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