Duplex steel coil
Dual phase steel coil is also called coil steel. The steel is rolled by hot pressing and cold pressing. In order to facilitate storage and transportation, it is convenient to carry out various processing (such as processing into steel plate, steel strip, etc.)
PRODUCT INTRODUCTION
Dual phase steel coil is also called coil steel. The steel is rolled by hot pressing and cold pressing. In order to facilitate storage and transportation, it is convenient to carry out various processing (such as processing into steel plate, steel strip, etc.)
Formed coil is mainly hot-rolled coil and cold-rolled coil. Hot rolled coil is a processed product before billet recrystallization. Cold rolled coil is the subsequent processing of hot rolled coil. The general weight of steel coil is about 15-30t.
Chemical composition of duplex steel coil：
| Chemical composition | C | Si | Mn | P | S | Cr | Ni | Mo | N |
| Standard | £0.03 | £1.00 | £2.00 | £0.04 | £0.03 | 21.0~24.0 | 4.5~6.5 | 2.5~3.5 | 0.08~0.2 |
| Commonly | 0.025 | 0.5 | 1.5 | 0.026 | 0.001 | 22.5 | 5.8 | 3.0 | 0.16 |
Properties of dual phase steel coil（JIS G 4305-2005）：
| Distinguish | Mechanical property | Remarks | ||
| Ys (Mpa) | Ts (Mpa) | El (%) | Hv | 2.0t/2B |
| Standard | ≥450 | ≥620 | ≥18 | ≤320 |
| Commonly | 670 | 875 | 27 | 280 |
Physical properties of dual phase steel coil：
| Density (g/cm) | Magnetic | Specific heat (J/g.C) | Thermal conductivity 100C (w/m | Thermal expansion rate 20 ~ 100C (10/C) |
| 7.8 | Have | 0.45 | 19.0 | 13.7 |