C45 - ISO 683-1-2016

Grade	C45
Corresponding Standard	ISO 683-1-2016 Non-alloy steels for quenching and tempering
Classification	Carbon Steel

C45 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	More
Minimum Value	0.42	0.1	0.5	-	-	-	-	-	-	Cr+Mo+Ni≤0.63
Maximum Value	0.5	0.4	0.8	0.045	0.045	0.4	0.4	0.3	0.1	Cr+Mo+Ni≤0.63

C45 Mechanical Properties

	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
d≤16 or t≤8	700~850	≥490	≥14	≥35
16＜d≤40 or 8＜t≤20	650~800	≥430	≥16	≥40
40＜d≤100 or 20＜t≤60	630~780	≥370	≥17	≥45

1 Approximate Comparison Table

China	Japan	International Organization for Standardization	European Standard
GB	JIS	ISO	EN	Numerical Grade
45	S45C	C45	C45	1.0503

2 Approximate Comparison Table

China	Japan	United States	International Organization for Standardization	Germany	France	European Standard		Russia	Sweden	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	SS	BS EN/BS
45	S45C	1042 1045 Gr.1043	C45	C45	AF65C45 C45	C45	1.0503	45	1650	070M46 50HS

3 Approximate Comparison Table

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 45	S45C	1045	ISO 630-1:1987 C45 C45E4 C45M2	C45 XC45	45	060A42 060A47

C45 Corresponding Standards(Same grade name, different standards)

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