Cold Rolled Steel

Cold-rolled steel sheet is a metal sheet that is cold-rolled to hot-rolled billets at room temperature to improve surface quality,dimensional accuracy and mechanical properties. It is commonly used in automobiles,home appliances and construction.

DC01 to DC07 cold-rolled steel coils

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°
Nominal 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 %
C Mn P S Ti
DC01a ≤0.10 ≤0.60 ≤0.045 ≤0.045 –
DC03a ≤0.08 ≤0.45 ≤0.035 ≤0.035 –
DC04a ≤0.08 ≤0.40 ≤0.030 ≤0.030 –
DC05 ≤0.008 ≤0.30 ≤0.020 ≤0.020 ≤0.20b
DC06 ≤0.006 ≤0.30 ≤0.020 ≤0.020 ≤0.20b
DC07 ≤0.006 ≤0.25 ≤0.020 ≤0.020 ≤0.20b

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%.