C45 - DIN EN ISO 683-1-2018

Grade	C45
Corresponding Standard	DIN EN ISO 683-1-2018 Heat-Treatable Steels,alloy Steels and Free-Cutting Steels--Part 1: 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

	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	Impact Energy Absorption KV2 J
d≤16; t≤8	Quenching and Tempering	700~850	≥490	≥14	≥35		≥15
16＜d≤40；8＜t≤20	Quenching and Tempering	650~800	≥430	≥16	≥40		≥15
40＜d≤100；20＜t≤60	Quenching and Tempering	630~780	≥370	≥17	≥45		≥15
d≤16；t≤16	Normalizing (N)	≥620	≥340	≥14
16<d≤100；16＜t≤100	Normalizing (N)	≥580	≥305	≥16
100<d≤250；100＜t≤250	Normalizing (N)	≥560	≥275	≥16
All Sizes	Shearable Condition (+S)					≤255

New and Old Grade Replacement List

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

C45 Corresponding Standards(Same grade name, different standards)

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