S40C - JIS G 4051-2005

Grade	S40C
Corresponding Standard	JIS G 4051-2005 Carbon steels for machine structural use
Classification	Carbon Steel

S40C Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr ^*	Ni	Cu	More
Minimum Value	0.37	0.15	0.6	-	-	-	-	-	Ni+Cr≤0.35*
Maximum Value	0.43	0.35	0.9	0.03	0.035	0.2	0.2	0.3	Ni+Cr≤0.35*

1 Approximate Comparison Table High-Quality Carbon Structural Steel

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

Russia

United Kingdom

ISC

CNS

JIS

ASTM/AISI

UNS

ISO

DIN EN/DIN

W-Nr.

NF EN/NF

GOST

BS EN/BS

U20402

S40C

SM40C

1040

G10400

C40E4

C40E
Ck40

1.1186

C40E
XC42

C40E
080M40

2 Approximate Comparison Table Carbon Structural Steel and Engineering Steel

China	Japan	International Organization for Standardization	European Standard
GB	JIS	ISO	EN	Numerical Grade
40	S40C	C40	C40	1.0511

3 Approximate Comparison Table Non-Alloy Steel for Quenching and Tempering

China	Japan	International Organization for Standardization	European Standard
GB	JIS	ISO	EN	Numerical Grade
40	S40C	C40E	C40E	1.1186

4 Approximate Comparison Table High-Quality Carbon Structural Steel

China	Japan	United States	International Organization for Standardization	Germany		France	European Standard		Russia	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	EN	Numerical Grade	GOST	BS EN/BS
40	S40C	1038 1040	C40 C40E4	C40 Ck40	1.0511	AF60C40 AF60C45 XC42HI	C40	1.0511	40	070M40 080M40 En8

5 Approximate Comparison Table High-Quality Carbon Structural Steel

Japan	United States	International Organization for Standardization	Germany	France	European Standard		Russia	United Kingdom
JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	BS EN/BS
S40C	1040	C40E4	Ck40	XC42H1	C40E	1.1186	40	080M40 CS40

6 Approximate Comparison Table High-Quality Carbon Structural Steel

China	Japan	United States	International Organization for Standardization	France	Russia	United Kingdom
GB	JIS	ASTM/AISI	ISO	NF EN/NF	GOST	BS EN/BS
GB/T 699-1999 40	S40C	1040	ISO 630-1:1987 C40 C40E4 C40M2	C42 XC42	40	060A40

S40C Corresponding Standards(Same grade name, different standards)

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