SPECIFICATION SHEET FOR CHEMICAL COMPOSITION OF DIFF GRADE
| GRADE | 100 | 150 | 200 | 260 |
|---|---|---|---|---|
| % C | 3.5 - 3.8 | 3.4 - 3.7 | 3.2 - 3.5 | 3.1 - 3.4 |
| % SI | 2.3 - 2.8 | 2.1 - 2.6 | 1.8 - 2.3 | 1.6 - 2.1 |
| % MN | 0.4 - 0.8 | 0.5 - 0.8 | 0.6 - 0.8 | 0.6 - 0.8 |
| % P | MAX 0.2 | MAX 0.2 | MAX 0.2 | MAX 0.15 |
| % S | 0.06 - 0.15 | 0.06 - 0.15 | 0.06 - 0.15 | 0.06 - 0.12 |
| C EQV. | 4.2 - 4.6 | 4.0 - 4.3 | 3.8 - 4.1 | 3.6 - 3.9 |
| BHN | 120 - 140 | 130 - 150 | 140 - 170 | 170 - 220 |
| TENSILE STRENGTH | 12 kg/mm2 | 15 kg/mm2 | 20 kg/mm2 | 25 kg/mm2 |
SPECIFICATION SHEET FOR CHEMICAL COMPOSITION OF DIFF GRADES OF S.G. IRON
| GRADE | C % | SI % | MN % | P % | S % | CU % | MG % | TENSILE STRENGTH (N/MM2) | ELONGATION % | HARRDNESS IN BHN |
|---|---|---|---|---|---|---|---|---|---|---|
| 400/12 | 3.4 - 3.9 | 2.4 - 2.8 | 0.35 MAX | 0.08 MAX | 0.02 MAX | 0.025 - 0.060 | 400 MIN | 12% | 3.1 -143 - 203 | |
| 450/10 | 3.4 - 3.9 | 2.4 - 2.8 | 0.35 MAX | 0.08 MAX | 0.02 MAX | 0.025 - 0.061 | 450 MIN | 10% | 155 - 207 | |
| 400/15 | 3.4 - 3.9 | 2.4 - 2.8 | 0.3 MAX | 0.08 MAX | 0.02 MAX | 0.025 - 0.062 | 400 MIN | 15% | 130 - 180 | |
| 500/7 | 3.4 - 3.8 | 2.3 - 2.8 | 0.45 MAX | 0.08 MAX | 0.02 MAX | 0.50 MAX | 0.025 - 0.063 | 500 MIN | 7% | 160 - 240 |
| 550/6 | 3.3 - 3.8 | 2.4 - 2.7 | 0.5 MAX | 0.08 MAX | 0.02 MAX | 0.65 MAX | 0.025 - 0.064 | 550 MIN | 6% | 185 - 255 |
| 600/3 | 3.3 - 3.8 | 2.4 - 2.7 | 0.5 MAX | 0.08 MAX | 0.02 MAX | 0.65 MAX | 0.025 - 0.065 | 600 MIN | 3% | 190 - 270 |