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National Standards | C | Si | Mn | P | S | Cr | Ni | Mo | Mg |
Code No. | |||||||||
ICII | 2.9-3.6 | 0.6-1.2 | 0.4-1.2 | ≤0.25 | ≤0.08 | 0.7-1.2 | 1.01-2.0 | 0.2-0.6 | - |
ICIII | 2.9-3.6 | 0.6-1.2 | 0.4-1.2 | ≤0.25 | ≤0.05 | 0.7-1.2 | 2.01-3.0 | 0.2-1.0 | - |
ICIV | 2.9-3.6 | 0.6-1.5 | 0.4-1.2 | ≤0.1 | ≤0.05 | 1.0-2.0 | 3.01-4.8 | 0.2-1.0 | - |
Physical Property | Application | ||
Code No. | Roll Barrel Hardness(HSD) | Roll Neck Tensile Strength(N/mm2) | |
ICII | 55-72 | ≥350 |
Small Section Steel, Narrow strip steel mill, medium thickness plate, flate, hot strip steel mill |
ICIII | 65-78 | ≥350 | |
ICIV | 70-83 | ≥350 |
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