SM45C,S45C,1045,1046,080M46,CK45,C45 Material comparison table

* SM45C,S45C,1045,1046,080M46,CK45,C45 Material comparison table

(carbon steel for mechanical structures)

 

1. Chemical composition

Code	KS	JIS	AISI	AISI	BS	DIN	DIN
Material Grade	SM45C	S45C	1045	1046	080M46	CK45	C45
C	0.42~0.48	0.42~0.48	0.43~0.50	0.43~0.50	0.42~0.50	0.42~0.50	0.42~0.50
Si	0.15~0.35	0.15~0.35	agreement	agreement	0.10~0.40	0.15~0.35	0.15~0.35
Mn	0.60~0.90	0.60~0.90	0.60~0.90	0.70~1.00	0.60~1.00	0.50~0.80	0.50~0.80
P	≦0.030	≦0.030	≦0.040	≦0.040	≦0.050	≦0.035	≦0.045
S	≦0.035	≦0.035	≦0.050	≦0.050	≦0.050	≦0.035	≦0.045
Ni	<0.20	<0.20	-	-	≦0.40	-	-
Cr	<0.20	<0.20	-	-	≦0.30	-	-
Mo	-	-	-	-	≦0.15	-	-
Cu	<0.30	<0.30	-	-	-	-	-
Remark	Ni+Cr<0.35	Ni+Cr<0.35	In AISI 3,5,6 C 0.42~0.50		-	-	-

(Referred to KS, JIS, AISI, BS, DIN)

 

2. Mechanical property (SM45C,S45C)

Heat Treatment	yield point kgf/mm^2 (N/mm^2)	tensile strength kgf/mm^2 (N/mm^2)	elongation %	contraction of area %	hardness (HB)	charpy impact value kgf.m/cm^2 (J/cm^2)
Normalizing 820~870℃ Air cooling	35≦ (343)≦	58≦ (569)≦	20≦	-	167~229	-
Annealing About 810℃ Furnace cooling	-	-	-	-	137~170	-
Quenching 820~870℃ Water cooling Tempering 550~650℃ Quick cooling	50≦ (490)≦	70≦ (686)≦	17≦	45≦	201~269	8≦ (78)≦

(Referred to KS, JIS)