C45 - JIS G 7105-2000

Grade	C45
Corresponding Standard	JIS G 7105-2000 Heat-Treatable Steels, Alloy Steels and Free-Cutting Steels — Part 18 : Bright Products Of Unalloyed and Low Alloy Steels
Classification	Carbon Steel
Properties	Carburizing Ability

C45 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	0.42	0.1	0.5	-	-
Maximum Value	0.5	0.4	0.8	0.045	0.045

◎ Steels with machinability which has been improved either by the addition of lead or by higher sulfur levels up to about 0.100 % (m/m) S (including controlled sulfide morphology) may be available on request.

C45 Mechanical Properties

thickness t mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
t≤5	TC	≥750	≥610	≥4
5＜t≤10	TC	≥730	≥560	≥5
10＜t≤16	TC	≥690	≥520	≥5
16＜t≤25	TC	≥660	≥475	≥6
25＜t≤40	TC	≥640	≥450	≥7
40＜t≤100	TC	≥580	≥305	≥8
t≤100	TC+TA, P+TA or G+TA				≥207
t≤16	TC+TN, P+TN or G+TN	≥620	≥340	≥14
16＜t≤100	TC+TN, P+TN or G+TN	≥580	≥305	≥16
100＜t≤250	TC+TN, P+TN or G+TN	≥560	≥275	≥16
t≤16	TC+TQ+TT℗, P+TQ+TT or G+TQ+TT	700~850	≥490	≥14
16＜t≤40	TC+TQ+TT℗, P+TQ+TT or G+TQ+TT	650~800	≥430	≥16
40＜t≤100	TC+TQ+TT℗, P+TQ+TT or G+TQ+TT	630~780	≥370	≥17
100＜t≤250	TC	Be agreed	Be agreed	Be agreed
100＜t≤250	TC+TA, P+TA or G+TA				Be agreed
100＜t≤250	TC+TQ+TT, P+TQ+TT or G+TQ+TT	Be agreed	Be agreed	Be agreed

C45 Corresponding Standards(Same grade name, different standards)

1	ISO 683-18-1996
	C45
2	DIN 17200-1987
	C45 1.0503
3	ISO 683-1-1987
	C45
4	EN 10083-2-2006
	C45 1.0503
5	EN 10250-2-2000
	C45 1.0503
6	EN 10277-2-2008
	C45 1.0503
7	DIN 17204-1990
	C45 1.0503
8	ISO 683-1-2016
	C45
9	DIN EN ISO 683-1-2018
	C45
10	ISO 683-18-2014
	C45
11	DIN 1652-1963
	C45 1.0503
12	NF EN 10083-2-2006
	C45 1.0503
13	NF A 37-502-1984
	C45
14	JIS G 7105-2000
	C45

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