Cold Rolled Steel Coil is produced without heating during the manufacturing process, eliminating defects such as pits and scales that commonly occur in hot rolling. This results in superior surface quality, high finish, and precise dimensional accuracy.
The cold rolling process uses hot-rolled steel coils as raw materials, which are pickled to remove scale before cold rolling. The finished product is hard rolled coils with increased strength, hardness, and toughness due to cold hardening from continuous cold deformation.
Key characteristics:
Widely used in various industries including:
| GRADE | Yield Strength RcL Mpa | Tensile Strength Rm Mpa | Elongation A80mm % | Impact Test |
|---|---|---|---|---|
| SPCC | ≥195 | 315~430 | ≥33 | |
| Q195 | ≥195 | 315~430 | ≥33 | |
| Q235-B | ≥235 | 375~500 | ≥25 | 20ºC ≥27J |