High Strength Low Alloy Cold Rolled Steel DC01-DC07

Cold-rolled stamped steel is commonly used to make parts for automobiles, home appliances, and other industrial applications. The properties of cold-rolled stamped steel make it an ideal choice for these applications.

Grade	YS Strength (MPa)	Tensile Strength (MPa) Not less than	Elongation A80mm % Not less than						r90°	n90°
			Norminal thickness						Not less than
			<0.30	0.30~<0.50	0.50~<0.70	0.70~<1.0	1.0~<1.6	≥1.6
DC01d	140~280	270	24	26	28	30	32	34	-	-
DC03	140~240	270	-	30	32	34	35	36	1.3	-
DC04	130~210	270	-	34	36	38	39	40	1.6	0.18
DC05	120~180	270	-	35	38	40	40	41	1.9	0.20
DC06	110~170	260	-	37	39	41	42	43	2.1	0.22
DC07	100~150	250	-	40	42	44	44	44	2.5	0.23

a. When there is no significant yield, RP0.2 should be used; otherwise ReL should be used. When the thickness is more than 0.50mm and not more than 0.70mm, the specified value of the yield strength is allowed to increase 20MPa; when the thickness is not more than 0.50mm, the specified value of the yield strength is allowed to increase 40MPa.

b. The sample is the P6 sample in GB/T 228 and the sample direction is transverse.

c. The requirements of r90 and n90 values apply only to products with the thickness not less than 0.50mm. When the thickness is more than 2.0mm, the value of r90 is allowed to lower 0.2.

d. The upper limit value of DC01 yield strength applies only to products within 8 days since the manufacturing date./

Grade	Chemical Component %
Grade	C	Mn	P	S	Ti
DC01^a	≤0.10	≤0.60	≤0.045	≤0.045	-
DC03^a	≤0.08	≤0.45	≤0.035	≤0.035	-
DC04^a	≤0.08	≤0.40	≤0.030	≤0.030	-
DC05	≤0.008	≤0.30	≤0.020	≤0.020	≤0.20^b
DC06	≤0.006	≤0.30	≤0.020	≤0.020	≤0.20^b
DC07	≤0.006	≤0.25	≤0.020	≤0.020	≤0.20^b

a Nb and/or Ti are allowed to be added.

b Nb is allowed to replace part of Ti, in which case the total content of Nb and Ti should not exceed 0.20%.