Turning gets rid of surface imperfections. Grinding narrows the original size tolerance range. Polishing improves surface finish.
All cold products provide a superior surface finish and are superior in tolerance, concentricity, and straightness when compared to hot rolled.
| rade | aYieldStrength | TensileStrength | b(Lo=80mm, b=20mm) | |||
| THK< 0.60 | 0.60≤ THK< 1.0 | 1.0≤ THK< 1.6 | THK≥ 1.6 | |||
| SPCC | > 270MPA | ≥ 34% | ≥ 36% | ≥ 37% | ≥ 38% | |
| SPCD | > 270MPA | ≥ 36% | ≥ 38% | ≥ 39% | ≥ 40% | |
| SPCE | ≤ 210MPA | > 270MPA | ≥ 38% | ≥ 40% | ≥ 41% | ≥ 42% |
| SPCEN | ≤ 210MPA | > 270MPA | ≥ 38% | ≥ 40% | ≥ 41% | ≥ 42% |
Yield
Rp0.2 (MPa)Tensile
Rm (MPa)Impact
KV (J)Elongation
A (%)Reduction in cross section on fracture
Z (%)As-Heat-Treated ConditionHBW372 (≥)651 (≥)114434Solution and Aging, Annealing, Ausaging, Q+T,etc312
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