Cold-rolled steel refers to various steels made by cold rolling process. Compared with hot rolling process, steel made by cold rolling process has brighter appearance, more precise size and higher strength.
Thickness(mm) | Thickness tolerance | ||||||||
Normal precision PT. A | Higher precision PT.B | ||||||||
Width(mm) | Width(mm) | ||||||||
≤1200 | >1200~1500 | >1500 | ≤1200 | >1200~1500 | >1500 | ||||
≤0.40 | ±0.04 | ±0.05 | ±0.06 | ±0.025 | ±0.035 | ±0.045 | |||
>0. 40~0.60 | ±0.05 | ±0.06 | ±0.07 | ±0.035 | ±0.045 | ±0.050 | |||
>0.60~1,80 | ±0.06 | ±0.07 | ±0.08 | ±0.040 | ±0.050 | ±0.050 | |||
>0.80~1.00 | ±0.07 | ±0.08 | ±0.09 | ±0.045 | ±0.060 | ±0.060 | |||
>1.00~1.20 | ±0.08 | ±0.09 | ±0.10 | ±0.055 | ±0.070 | ±0.070 | |||
>1.20~1.60 | ±0.10 | ±0.11 | ±0.11 | ±0.070 | ±0.080 | ±0.080 | |||
>1.60~2.00 | ±0.12 | ±0.13 | ±0.13 | ±0.080 | ±0.090 | ±0.090 | |||
>2.00~2.50 | ±0.14 | ±0.15 | ±0.15 | ±0.100 | ±0.110 | ±0.110 | |||
>2.50~3.00 | ±0.16 | ±0.17 | ±0.17 | ±0.110 | ±0.120 | ±0.120 | |||
>3.00~4.00 | ±0.17 | ±0.19 | ±0.19 | ±0.140 | ±0.150 | ±0.150 |
Q195, Q215, Q235, SPCC, SPCD, SPCE, STCEN, ST12, ST13, ST14, ST15, ST16, DC01, DC03, DC04, DC05, DC06, etc.
Cold-rolled steel can be classified into ordinary carbon structural steel, high-quality carbon structural steel, low-alloy structural steel, cold-rolled stainless steel, low-carbon cold-rolled steel for enamel, etc.
Classification
Classification by use | Grade | Use |
DC01 | General use | |
DC03 | Stamping | |
DC04 | For deep drawing | |
DC05 | For extra deep drawing | |
DC06 | For super deep drawing | |
DC07 | For extra super deep drawing |
Grade and chemical composition
Grade | C | Mn | P | S | Alt | Ti |
DC01 | ≤0.12 | ≤0.60 | ≤0.045 | ≤0.045 | ≥0.020 | |
DC03 | ≤0.10 | ≤0.45 | ≤0.035 | ≤0.035 | ≥0.020 | |
DC04 | ≤0.08 | ≤0140 | ≤0.030 | ≤0.030 | ≥0.020 | |
DC05 | ≤0.06 | ≤0.35 | ≤0.025 | ≤0.025 | ≥0.015 | |
DC06 | ≤0.02 | ≤0.30 | ≤0.020 | ≤0.020 | ≥0.015 | ≤0.30 |
DC07 | ≤0.01 | ≤0.25 | ≤0.020 | ≤0.020 | ≥0.015 | ≤0.20 |
Mechanical properties
Grade | Yield strength/MPa | Tensile strength/MPa | Elongation after fracture | r90 | n90 |
DC01 | 280 | 270-410 | 28 | ||
DC03 | 240 | 270-370 | 34 | 1.3 | |
DC04 | 210 | 270-350 | 38 | 1.6 | 0.18 |
DC05 | 180 | 270-330 | 40 | 1.9 | 0.2 |
DC06 | 170 | 270-330 | 41 | 2.1 | 0.22 |
DC07 | 150 | 250-310 | 44 | 2.5 | 0.23 |
Equivalent standards
GB/T 5213-2008 | GB/T 5213-2001 GB/T 13237-1991 | EN 10130-2006 | JIS G 3141-2005 | ISO 3574:1999 | ASTM A 1008M-07 |
DC01 | 08AI | DCO1 | SPCC | CR1 | CS Type C |
DC03 | DC03 | SPCD | CR2 | CS Type A,B | |
DC04 | SC1 | DC04 | SPCE | CR3 | DS Type A,B |
DC05 | SC2 | DCO5 | SPCF | CR4 | DDS |
DC06 | SC3 | DC06 | SPCG | CR5 | EDDS |
DC07 | DC07 |
Size range
Shape | Thickness(mm) | Width(mm) |
Wide steel strip, coiled steel plate | ≥0.10~<8.00 | ≥600~<2100 |
Slitting wide steel strip, coiled steel strip | ≥0.10~≤8.00 | <600 |
Narrow steel strip, coiled steel strip | ≥0.01~≤3.00 | <600 |
Thickness tolerance
Thickness(mm) | Thickness tolerance | |||||
Width(mm)≤1000 | 1000<Width(mm)≤1300 | 1300<Width(mm)≤210 | ||||
Normal precision | Higher precision | Normal precision | Higher precision | Normal precision | Higher precision | |
≥0.10~<0.20 | ±0.025 | ±0.015 | ||||
≥0.20~<0.30 | ±0.030 | ±0.020 | ||||
≥0.30~<0.50 | ±0.04 | ±0.025 | ±0.045 | ±0.030 | ||
≥0.50~<0.60 | ±0.045 | ±0.030 | ±0.05 | ±0.035 | ||
≥0.60~<0.80 | ±0.05 | ±0.035 | ±0.055 | ±0.040 | ||
≥0.80~<1.00 | ±0.055 | ±0.040 | ±0.06 | ±0.045 | ±0.065 | ±0.50 |
>1.00~<1.20 | ±0.06 | ±0.045 | ±0.07 | ±0.050 | ±0.075 | ±0.55 |
≥1.20~<1.50 | ±0.07 | ±0.050 | ±0.08 | ±0.055 | ±0.09 | ±0.60 |
≥1.50~<2.00 | ±0.08 | ±0.055 | ±0.09 | ±0.060 | ±0.10 | ±0.70 |
≥2.00~<2.50 | ±0.09 | ±0.10 | ±0.11 | |||
≥2.50~<3.00 | ±0.11 | ±0.12 | ±0.12 | |||
≥3.00~<4.00 | ±0.13 | ±0.14 | ±0.14 | |||
≥4.00~<5.00 | ±0.14 | ±0.15 | 士0.15 | |||
≥5.00~<6.50 | ±0.15 | ±0.16 | ±0.16 | |||
≥6.50~<8.00 | ±0.16 | ±0.17 | ±0.17 |
Thickness(mm) | Thickness tolerance | |||||
Width(mm)<125 | 125≤Width(mm)<250 | 250≤Width(mm)<600 | ||||
Normal precision | Higher precision | Normal precision | Higher precision | Normal precision | Higher precision | |
≥0.05~<0.10 | ±0.10t | ±0.06t | ±0.12t | ±0.10t | ±0.15t | ±0.10t |
≥0.10~<0.20 | ±0.010 | ±0.008 | ±0.015 | ±0.012 | ±0.020 | ±0.015 |
≥0.20~<0.30 | ±0.015 | ±0.012 | ±0.020 | ±0.015 | ±0.025 | ±0.020 |
≥0.30~<0.40 | ±0.020 | ±0.015 | ±0.025 | ±0.020 | ±0.030 | ±0.025 |
≥0.40~<0.60 | ±0.025 | ±0.020 | ±0.030 | ±0.025 | ±0.035 | ±0.030 |
≥0.60~<1.00 | ±0.030 | ±0.025 | ±0.035 | ±0.030 | ±0.040 | ±0.035 |
≥1.00~<1.50 | ±0.035 | ±0.030 | ±0.040 | ±0.035 | ±0.045 | ±0.040 |
≥1.50~<2.00 | ±0.040 | ±0.035 | ±0.050 | ±0.040 | ±0.060 | ±0.050 |
≥2.00~<2.50 | ±0.050 | ±0.040 | ±0.060 | ±0.050 | ±0.070 | ±0.060 |
≥2.50~≤3.00 | ±0.060 | ±0.050 | ±0.070 | ±0.060 | ±0.080 | ±0.070 |
Grade and chemical composition
Grade | Chemical composition (mass fraction)/%≤ | ||||
C | Si | Mn | P | S | |
Q195 | 0.12 | 0.3 | 0.5 | 0.035 | 0.035 |
Q215 | 0.15 | 0.35 | 1.2 | 0.035 | 0.035 |
Q235 | 0. 22 | 0. 35 | 1.4 | 0.035 | 0.035 |
Q275 | 0.24 | 0.35 | 1.5 | 0.035 | 0.035 |
Mechanical properties
Grade | Yield strength/MPa | Tensile strength/MPa | Elongation after fracture/% | |
Q195 | ≥195 | 315~430 | ≥26 | ≥24 |
Q215 | ≥215 | 335~450 | ≥24 | ≥22 |
Q235 | ≥235 | 370~500 | ≥22 | ≥20 |
Q275 | ≥275 | 410~540 | ≥20 | ≥18 |
The production process of cold-rolled steel coil mainly includes: pickling → cold rolling → degreasing → annealing → leveling → shearing (cross-cutting, longitudinal cutting)
Due to the good surface quality and precise size of cold-rolled steel, it is widely used in projects requiring high gloss and high precision. Typical applications include:
The cold-rolled steel supplied by Wanzhi Steel includes cold-rolled steel rolled on the basis of hot-rolled steel, and cold-rolled products processed by coil coating equipment, with metal materials or organic coatings on the surface of cold-rolled products.
If you have procurement needs for the above cold-rolled steel, please contact Wanzhi Steel.
This is our website: https://wanzhi-steel.com/
WhatsApp: +8615138685087
Email: info02@wanzhisteel.com
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