A corrugated mark that is at an angle to the rolling direction and is symmetric with respect to the center line of the width of the Cold coil shape requirement. The edge of the Cold coil shape requirement has a discontinuous small-scale side wave shape. The edge of the Cold coil shape requirement has a continuous wave shape.
| Proof strength Rp0.2 (MPa) | Tensile strength Rm (MPa) | Impact energy KV (J) | Elongation at fracture A(%) | Reduction in cross section on fracture Z(%) | As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 882 (≥) | 192 (≥) | 13 | 12 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 121 |
With the improvement of Cold coil shape requirement, many technologies to improve shape have been developed, such as roll bending technology, roll shifting technology and cross roll technology.
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