General physical and mechanical properties of CRGO steel
| Property | Value |
|---|---|
| Density | 7.65 g/cm³ |
| Thickness of sheet | 0.23 - 0.35 mm |
| Silicon content | 3-4 % |
| Stacking factor | 95-98% |
| Yield Point (relative to rolling direction) | 0°: 330 N/mm² 90°: 355 N/mm² |
| Number of bends | 0°: 21 90°: 15 |
| Elongation | 0°: 11% 90°: 31% |
| Tensile strength | 0°: 348 N/mm² 90°: 412 N/mm² |
| Grade (BIS Nomenclature) | Thickness (mm) | Max Core Loss (W/kg) 50 Hz @1.5T | Max Core Loss (W/kg) 50 Hz @1.7T |
|---|---|---|---|
| 20HP70D | 0.20 | 0.52 | 0.70 |
| 23HP75D | 0.23 | 0.55 | 0.75 |
| 23HP85D | 0.23 | 0.60 | 0.85 |
| 23HP90 | 0.23 | 0.64 | 0.90 |
| 23HP100 | 0.23 | 0.68 | 1.00 |
| 23CG110 | 0.23 | 0.70 | 1.10 |
| 27HP90D | 0.27 | 0.66 | 0.90 |
| 27HP100 | 0.27 | 0.70 | 1.00 |
| 27HP110 | 0.27 | 0.78 | 1.10 |
| 27CG120 | 0.27 | 0.85 | 1.20 |
| 30CG130 | 0.30 | 0.90 | 1.30 |
| Attribute | Range/Value | Tolerance |
|---|---|---|
| Width | 0 - 100 mm | +0.00 / -0.15 mm |
| 100 - 230 mm | +0.00 / -0.20 mm | |
| 230 - 400 mm | +0.00 / -0.30 mm | |
| 400 - 750 mm | +0.00 / -0.50 mm | |
| Length | 0 - 350 mm | +0.00 / -0.30 mm |
| 350 - 1000 mm | +0.00 / -0.60 mm | |
| 1000 - 2000 mm | +0.00 / -1.00 mm | |
| 2000 - 3000 mm | +0.00 / -1.50 mm | |
| 3000 - 4000 mm | +0.00 / -2.00 mm | |
| Thickness | 0.23 - 0.27 mm | ±0.025 mm |
| 0.30 - 0.35 mm | ±0.030 mm | |
| Mitering Angle | 45° | ±5 minutes |
| Burr Height | 0.18 - 0.23 mm | 10 microns |
| 0.23 - 0.30 mm | 15 microns | |
| 0.30 - 0.35 mm | 20 microns | |
| Wave Factor | Material width > 150mm, Flatness deviation |
Max. 1.5% of width |
| Hole Dimension | Up to 34 mm | ±0.15 mm |
| Edge Camber | Material width > 150mm | Max. 0.8 mm (for length of 1.5m) |