CR (Cold Rolled Steel)

Product Introduction
A cold rolled steel sheet is produced by pickling a hot coil and rolling it uniformly at an appropriated temperature to a thinner thickness.

It has excellent surface configuration and superb mechanical properties for use in automobile and electronic appliance production.

Surface Finish
The surface finish of cold-rolled steel sheet is either dull or bright

Product Dimension availability

Thickness	MIN 0.25mm ~ Max. 3.2mm
Width	MIN 15mm ~ Max. 1800mm
Length	300mm ~ Max. 4000mm

Commercial quality Steel
This type of steel is used for general purposes. In particular, it is appropriate for manufacturing refrigerator doors,

drums and furniture as well as for automobile roofs, fenders, hoods, quarters, oil pans and spring houses

Drawing quality Steel
Sheet of this quality has a greater degree of ductility and is more consistent in performance than commercial steel

because of higher standards in production, selection and melting of the steel. It is suitable for automotive panels,

audio-visual equipment, and heating apparatuses.

Deep Drawing
Sheet of this designation should be used when drawing steel will not provide a sufficient degree of ductility

for fabrication of parts with stringent drawing requirements, or applications that require the sheet be free from aging.

This quality is produced through special steelmaking and finishing practices. It is suitable for automotive front panels and rear fenders.

Quality Specifications
Classification	KSD 3512	JIS G3141	ASTM A1008	EN10130
CQ (Commercial Quality)	SPCC	SPCC	CS	DC01(Fe P01)
DQ (Drawing Quality)	SPCD	SPCD	DS	DC03(Fe P03)
DDQ (Deep Drawing Quality)	SPCE	SPCE	DDS	DC04(Fe P04)
DDQ-N (Non-aging Deep Drawing Quality)	SPCEN	SPCEN	DDS	DC04(Fe P04)
EDDQ			EDDS	DC05(Fe P05

Chemical Composition
Standard Specification		Applications	Chemical Component
			C	Si	Mn	P	S
KS D 3512	SPCC	CQ	≤ 0.12	-	≤ 0.50	≤ 0.040	≤ 0.045
(JIS G 3141)	SPCD	DQ	≤ 0.10	-	≤ 0.45	≤ 0.035	≤ 0.035
	SPCE (N)	DDQ (Non-Aging)	≤ 0.08	-	≤ 0.40	≤ 0.030	≤ 0.030
ASTM A 1008	CS	CQ	≤ 0.10	-	≤ 0.60	≤ 0.030	≤ 0.035
	DS	DQ	≤ 0.08	-	≤ 0.50	≤ 0.020	≤ 0.030
	DDS	DDQ (Non-Aging)	≤ 0.06	-	≤ 0.50	≤ 0.020	≤ 0.025
EN 10130	DC01 (Fe P01)	CQ	≤ 0.12	-	≤ 0.60	≤ 0.045	≤ 0.045
	DC03 (Fe P03)	DQ	≤ 0.10	-	≤ 0.45	≤ 0.035	≤ 0.035
	DC04 (Fe P04)	DDQ (Non-Aging)	≤ 0.08	-	≤ 0.40	≤ 0.030	≤ 0.030
	DC05 (Fe P05)	EDDQ	≤ 0.06	-	≤ 0.35	≤ 0.025	≤ 0.025

Mechanical Properties
Standard Specification		Application	Mechanical Property
			Y.P	T.S	Elongation Min (%)
			Yielding Point (N/§±)	Tensile Strength	0.25≥t	0.40≥t	0.60≥t	1.0≥t	1.6≥t
			Yielding Point (N/§±)	(N/§±)	<0.40	<0.60	<1.0	<1.6	<2.5
KS D 3512	SPCC	CQ	-	≥ 270	-32	-34	-36	-37	-38	-39
(JIS G 3141)	SPCD	DQ	-	≥ 270	34	36	38	39	40	41
	SPCE (N)	DDQ (Non-Aging)	-	≥ 270	36	38	40	41	42	43
ASTM A 1008	CS	CQ	(140~275)	-	30 (L 0 =50mm)
	DS	DQ	(150~240)	-	36 (L 0 =50mm)
	DDS	DDQ (Non-Aging)	(115~200)	-	38 (L 0 =50mm)
	EDDS	EDDQ	(105~170)	-	40 (L 0 =50mm)
EN 10130	DC01 (Fe P01)	CQ	≤ 280	270~410	28 (L 0 =80mm)
	DC03 (Fe P03)	DQ	≤ 240	270~410	34 (L 0 =80mm)
	DC04 (Fe P04)	DDQ (Non-Aging)	≤ 210	270~410	38 (L 0 =80mm)
	DC05 (Fe P05)	EDDQ	≤ 180	270~410	40 (L 0 =80mm)