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Cold Rolled Steel Strip
1)Thickness:<4.0mm
2)Width:12.7cm-15.9cm, 15.9cm-19cm,15.9cm-25.4cm,19cm-25.4cm
3)Tolerance of thickness:+-0.04-0.08
4)Tolerance of width:+-0.15-0.20
5)Surface treatment:oxidecoating or galvanized
Chemistry Composition
Steel grade | C% | Mn% | Si% | S% | P% |
G350 | ≤ 0.15 | ≤ 0.95 | ≤ 0.035 | ≤ 0.035 | |
G450 | ≤ 0.21 | ≤ 1.4 | ≤ 0.035 | ≤ 0.035 | |
G550 | 0.12-0.20 | 1.20-1.60 | 0.20-0.60 | ≤0.050 | ≤0.045 |
Mechanical Properties
Steel grade | Tensile test | ||
Yield point (Mpa) | Strength of extension (Mpa) | Extensibility (%) | |
≥ | ≥ | ||
G350 | 350 | 370-450 | ≥ 26 |
G450 | 450 | 480-510 | ≥ 21 |
G550 | 550 | 590-660 | 22 |