Non oriented electrical steel is a silicon iron soft magnetic alloy with very low carbon content, and is an indispensable and important material in power, electronics, and military industries. With the development of high-speed and miniaturization of motors, higher requirements have been put forward for the performance of non oriented silicon steel, such as low iron loss and high magnetic induction strength at high frequencies.
35W470 steel is a type of cold-rolled, non-oriented electrical steel (silicon steel), commonly used in the cores of electric motors, transformers, and other electromagnetic devices, particularly in new energy vehicles (NEVs) for drive motors, valued for its magnetic properties like low core loss (the ‘470’ often indicates power loss in Watts per kg) and good magnetic permeability, making it suitable for high-efficiency applications.
| Grade | Tensile Strength (N/mm²) | Yield Strength (N/mm²) | Elongation (%) | Hardness (Hv0.5) |
|---|---|---|---|---|
| 50W1300 | 300-400 | 200-300 | 35-42 | 100-125 |
| 50W800 | 325-425 | 230-320 | 32-39 | 105-130 |
| 50W600 | 345-445 | 230-320 | 30-37 | 115-140 |
| 50W470 | 385-485 | 250-350 | 25-35 | 140-165 |
| 35W440 | 385-485 | 250-350 | 25-35 | 140-165 |
| 35W300 | 420-520 | 270-370 | 25-35 | 150-190 |
| 35WS250 | 440-540 | 280-380 | 25-35 | 150-185 |
| 30W230 | 450-550 | 280-380 | 15-25 | 180-220 |
| Grade | Nominal Thickness (mm) | Theoretical Density (kg/dm³) | Core Loss P1.5/50 (W/kg) | Magnetic Induction B50 (T) | Lamination Factor (%) | ||
|---|---|---|---|---|---|---|---|
| Guaranteed Value | Typical Value | Guaranteed Value | Typical Value | ||||
| 50W1300 | 0.5 | 7.85 | ≤6.10 | 5.80-6.00 | ≥1.74 | 1.75 | ≥97 |
| 50W800 | 0.5 | 7.8 | ≤5.30 | 4.70-5.00 | ≥1.72 | 1.74 | |
| 50W600 | 0.5 | 7.75 | ≤4.30 | 3.70-4.00 | ≥1.70 | 1.71 | |
| 50W470 | 0.5 | 7.7 | ≤3.30 | 2.70-3.00 | ≥1.70 | 1.7 | |
| 35W440 | 0.35 | 7.7 | ≤3.00 | 2.50-2.70 | ≥1.70 | 1.7 | ≥96 |
| 30W230 | 0.3 | 7.6 | ≤0.25 | 2.10-2.20 | ≥1.65 | 1.67 | |
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