High carbon steel

COLD ROLLED HIGH CARBON STEEL STRIP

Mechanical Properties
강종 Classification	조질기호	A			S	R
	기호＼구분 Symbol	(소둔상태)			(Skin Pass 상태)	(압연상태)
	기호＼구분 Symbol	경도(Hv) HARDNESS	Tensile strength (㎏f/㎟)	연신율(%) Elongation	경도(Hv) HARDNESS	경도(Hv) HARDNESS
탄소강대 CARBON STEEL	S30CM S35CM S45CM	140 - 150 140 - 150 140 - 160	45 Max 45 Max 50 Max	30 Max 27 Min 27 Min	150 Max 150 Max 160 Max	150 - 250 150 - 250 150 - 260
탄소강대 CARBON STEEL	S50CM S55CM S60CM	140 - 160 150 - 170 150 - 170	55 Max 55 Max 55 Max	27 Min 27 Min 25 Min	160 Max 170 Max 170 Max	150 - 260 150 - 250 170 - 260
공구강대 TOOL STEEL	SK3M SK4M SK5M	180 - 220 180 - 200 170 - 200	60 - 70 50 - 70 50 - 70	15 Min 20 Min 20 Min	220 Max 210 Max 210 Max	220 - 280 210 - 270 210 - 270
스프링강대 SPRING STEEL	SUP6M SUP9M SUP10M	210 Max 200 Max 200 Max				210 - 310 200 - 290 200 - 290
망간강대 MANGANESE STEEL	SMn420M SMn433M	160 Max 170 Max				160 - 240 170 - 250
크롬몰리브덴 강대 CHROMIUM MOLYBDENUM STEEL	SCM415M SCM420M SCM435M SCM440M	SCM415M 180 Max 190 Max 200 Max				170 - 240 180 - 250 190 - 270 200 - 280