When a material grade is specified as cold rolled steel, it means it has been subjected to a manipulative process of cold rolling in which a metal bar is passed through high tension rollers below the re-crystallization temperature of the steel.
| Chemical Composition (%) | |||||
|---|---|---|---|---|---|
| Grade | C | Mn | P | S | Alta |
| SPCC | ≤0.12 | ≤0.50 | ≤0.035 | ≤0.025 | ≥0.020 |
The roller does not only decrease the thickness of the sheets but also refines the grain structure and hardens the steels. SPCC steels add more good dimensional properties than SPHC Steels.
Cold coil is made of hot rolled coil at room temperature and below the recrystallization temperature, including plate and coil, of which the sheet delivered is called steel plate, also known as box plate or plate; the long length and delivered in coil is called steel strip, also known as coil plate.
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