C45 1.0503 - NF EN 10083-2-2006

Grade	C45
	1.0503
Corresponding Standard	NF EN 10083-2-2006 Tempered Non-Alloy Structural Steel
Classification	Carbon Steel

C45 Chemical Element Composition Content (%)

Component	C ^①	Si	Mn	P	S	Cr	Ni	Mo	More
Minimum Value	0.42	-	0.5	-	-	-	-	-	Cr+Mo+Ni≤0.63 ①
Maximum Value	0.5	0.4	0.8	0.045	0.045	0.4	0.4	0.1	Cr+Mo+Ni≤0.63 ①

C45 Mechanical Properties

condition	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
Steel: d ≤ 16mm; t ≤ 8mm	Quenching + Tempering (+QT)	700~850	≥490	≥14	≥35
Steel: 16mm ≤ d ≤ 40mm; 8mm ≤ t ≤ 20mm	Quenching + Tempering (+QT)	650~800	≥430	≥16	≥40
Steel: 40mm ≤ d ≤ 100mm; 20mm ≤ t ≤ 60mm	Quenching + Tempering (+QT)	630~780	≥370	≥17	≥45
Steel: d ≤ 16mm; t ≤ 16mm	Normalizing (+N)	≥620	≥340	≥14
Steel: 16mm ≤ d ≤ 100mm; 16mm ≤ t ≤ 100mm	Normalizing (+N)	≥580	≥305	≥16
Steel: 100mm ≤ d ≤ 250mm; 100mm ≤ t ≤ 250mm	Normalizing (+N)	≥560	≥275	≥16
Steel:	Processed to a Certain Shearability (+S)					≤255
Steel:	Softening Annealing (+A)					≤207

1 Approximate Comparison Table High-Quality Carbon Structural Steel

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

2 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 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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