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Cold-rolled high-quality steel sheets: mainly include various high-quality steel cold-rolled sheets, the most commonly used are carbon structural steel sheets, especially cold-rolled steel sheets for deep drawing, which are cold-rolled sheets from low-carbon high-quality steel 08Al.
The quality is divided into three groups; Ⅰ, Ⅱ, Ⅲ, respectively represent the special high-grade, high-grade, high finishing surface, according to the drawing grades are divided into ZF, HF, F grades (representing the most complex, very Complex and complex parts). According to the allowable deviation of the thickness of the steel plate, it is divided into A and B levels of precision, which are widely used in the automobile and tractor industry.
JIS/GB | JFS | IS |
SPCC | JSC270C | St12 |
SPCD | JSC270D | St13 |
SPCE | JSC270E | St14 |
SPCF | JSC270F | St15 |
SPCG | JSC270G | St16 |
Thickness(mm) | Yield strength(MPa) | Tensile strength(MPa) | Elongation after fracture(%) |
0~0.4 | ≤220 | ≥270 | ≥35 |
0.4~0.6 | ≤220 | ≥270 | ≥38 |
0.6~1.0 | ≤220 | ≥270 | ≥40 |
1.0~1.6 | ≤220 | ≥270 | ≥41 |
1.6~2.5 | ≤220 | ≥270 | ≥42 |
≥2.5 | ≤220 | ≥270 | ≥43 |