M19/M470 Silicon Steel Coil
Product
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Silicon Steel Coil
M4 Silicon Steel Coil
Product Introduction
| Silicon Steel Coil: Comprehensive Detail Tables | ||||
| Mechanical Properties of Silicon Steel Coils | ||||
| Grade | Yield Strength (N/mm²) | Tensile Strength (N/mm²) | Ductility (%) | Hardness (HV1) |
| M35W230 | 430 | 560 | 20.0 | 225 |
| M35W250 | 415 | 550 | 20.5 | 220 |
| M35W270 | 400 | 515 | 20.5 | 215 |
| M35W300 | 360 | 480 | 21.5 | 195 |
| M35W360 | 350 | 480 | 23.5 | 190 |
| M35W440 | 275 | 420 | 27.5 | 165 |
| M35W550 | 265 | 415 | 33.5 | 160 |
| M50W270 | 410 | / | / | / |
| M50W290 | 395 | 545 | 22.5 | 220 |
| M50W310 | 385 | 510 | 24.5 | 210 |
| M50W350 | 350 | 475 | 26.5 | 190 |
| M50W400 | 320 | 460 | / | / |
| Dimensional Specifications & Tolerances | ||||
| Parameter | Specification | Tolerance / Range | ||
| Thickness (CRGO) | 0.18 mm, 0.20 mm, 0.23 mm, 0.27 mm, 0.30 mm, 0.35 mm | Per IEC 60404-8-7 | ||
| Thickness (CRNGO) | 0.35 mm, 0.50 mm, 0.65 mm, 1.00 mm | Per IEC 60404-8-4 | ||
| Thickness Tolerance | Standard | ±2% of nominal (within sheet) | ||
| Width Range | Slit coil | 20 mm – 1250 mm | ||
| Width Tolerance | Standard | ±1% | ||
| Inner Diameter (ID) | Standard coil core | 508 mm (20 inches) | ||
| Coil Weight | Standard | 3–8 tons | ||
| Flatness | Wave amplitude | ≤0.5–1% of wavelength (200–300 mm) | ||
| Comparison: Grain-Oriented vs. Non-Oriented Silicon Steel | ||||
| Characteristic | Grain-Oriented (CRGO) | Non-Oriented (CRNGO) | ||
| Grain Structure | Oriented in rolling direction | Randomly distributed | ||
| Silicon Content | 2.5–3.5% | 0.5–3.0% | ||
| Magnetic Properties | Directional (best in rolling direction) | Uniform in all directions | ||
| Core Loss | Very low (1.0–1.5 W/kg at 1.7T/50Hz) | Higher (2.3–10 W/kg) | ||
| Magnetic Induction | High (1.85–1.92 T at 800 A/m) | Moderate (1.62–1.70 T at 5000 A/m) | ||
| Typical Thickness | 0.18–0.35 mm | 0.35–1.00 mm | ||
| Primary Applications | Power transformers, distribution transformers | Motors, generators, small transformers | ||
| Cost | Higher | Lower | ||
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