PARAMETER OF SILICON STEEL
| name | Rolling | Orientation | Silicon Content | Use |
| Hot Rolled Low Silicon Steel | Hot Rolled | No Orientation | 1.0%-2.5% | Household Motors And Micromotors |
| Hot Rolled High Silicon Steel | Hot Rolled | No Orientation | 3.0%-4.5% | Transformer |
| Cold Rolled Grain Oriented Electrical Steel | Cold Rolled | Normal Orientation/High Magnetic Induction Orientation |
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| Low Carbon Electrical Steel | Cold Rolled | No Orientation | <0.5% | Household Motors, Micromotors, Small Transformers And Ballasts |
| Silicon Steel | Cold Rolled | No Orientation | 0.5%-3.5% | Medium And Large Motors, Generators And Transformers |
OVERVIEW OF SILICON STEEL
Silicon steel, also known as electrical steel, lamination steel, or transformer steel, is a ferritic alloy of iron and silicon that have magnetic properties, which make it useful in motors and transformers. This type of steel material contains 0.5%-4.5% silicon in weight with low carbon of less than 0.08%. The addition of silicon (Si) improves the magnetic softness and increases the electrical resistivity of steel. There are two forms of silicon steel: grain-oriented (GO) and non-oriented (NGO). GO silicon steel can be further subdivided into regular grain-oriented (RGO) and high permeability grain-oriented (HGO) materials. Silicon steel is known for its high permeability and low amounts of core loss, which make it useful in the generation, distribution, and consumption of electricity, such as small to large motors, relays, solenoids, appliances’ motors, wind turbines, cores of transformers, EV, and power generator equipment, etc.
The thin silicon steel strips are suitable for being used at higher frequencies. The thickness of the silicon steel strips haVE been reduced to the world's thinnest level, reducing the core loss caused by eddy currents. Combined with the insulation coating technology, the lamination factor is improved.
The thin silicon steel strips improve energy consumption and reduce size in high-frequency reactors, transformers, and motors.
The thin silicon steel strips reduce cost and improve the equipment performance at high frequencies.
Magnetic Parameters
| Table 1 Core loss properties |
| Grade | Core loss (W/K |
| W15/50 | W15/100 | W10/400 | W10/1000 | W5/2000 | W2/5000 | W1/10000 | W0.5/20000 |
| GT-100 | 1.2 | 3.0 | 6.1 | 21.3 | 18.0 | 15.2 | 10.4 | 13.0 |
| GT-050 | 1.7 | 5.0 | 7.3 | 17. | 13.0 | 10.2 | 7.1 | 5.3 |
| Table 2 Permeability and magnetic flux density properties |
| Grade | Alternating permeability x 10-3 (H/m) | Magnetic flux density (T) |
| μ10/400 | μ10/1000 | μ5/2000 | μ1/10000 | μ0.5/20000 | B8 | B25 | B50 |
| GT-100 | 20.4 | 16.2 | 9.6 | 2.8 | 1.2 | 1.82 | --- | --- |
| GT-050 | 16.6 | 16.0 | 9.9 | 2.7 | 1.5 | 1.75 | --- | --- |
Note: The specimens are taken from the strips parallel to the rolling direction. The measurements are in accordance with JIS C 2550 after stress relief annealing.
| Table 3 Mechanical and electric properties |
| Grade | Density(g/cm3) | Space factor(%) | Tensile strength(N/mm2) | Elongation(%) | Hardness(Hv) | Specific resistance(μΩcm) |
| GT-100 | 7.65 | 93 | 420 | 9 | 202*2 | 48 |
| GT-050 | 7.65 | 90 | 387 | 11 | 179*2 | 48 |
Note: 1. Tensile strength and elongation are measured parallel to the rolling direction.
2. Hardness are measured by *1: H;0.5Kg, *2: H;0.3Kg, *3: H;0.1Kg.
| Table 4 Comparison of properties between various magnetic materials |
| Material | Magnetic flux densityB8 (T) | DC max relativepermeability μm | Core lossW1/20000 (W/Kg) | Specific resistance(μΩm) |
| GT-100 | 1.82 | 24,000 | 35 | 0.48 |
| GT-050 | 1.75 | 14,000 | 51 | 0.48 |
| High silicon steel (0.1t) | 1.29 | 23,000 | 31 | 0.82 |
| Amorphous | 1.56 | 300,000 | 6 | 1.30 |
| Nanocrystalline | 1.23 | 70,000 | 4 | 0.01 |
| Dust core (Sendust) | 0.65 | 150 | 62 | >10,000 |
| Ferrite (Mn-Zn) | 0.45 | 3,500 | 3 | >100,000 |
FEATURES OF SILICON STEEL
1.Thanks to the high permeability, low LH, and high resistivity of silicon steel, the hysteresis loss and eddy current loss are small.
2.Silicon steel requires high plasticity, smooth and flat surface, and low harmful inclusion in order to satisfy the process of punching and shearing, improve magnetic induction, and reduce hysteresis loss.
3.At present, the production process of hot-rolled silicon steel has been eliminated in China and replaced with cold-rolled silicon steel. The iron loss performance of the silicon steel that CUMIC supply far exceeds the iron loss requirements of the international standards.
Company advantage
Quality is guaranteed. First of all, raw materials come from many well-known enterprises at home and abroad, such as Baosteel, WISCO and Nippon Steel. We have the best materials. Secondly, our company has a perfect quality assurance system to ensure that you can get the best products from procurement to delivery.
Price concessions. Our company's product price is in the middle level of the industry and is famous for its high cost performance. There is still a lot of room for price. We look forward to your demand. We will give you the most suitable quotation.
Punctual delivery and stable cooperation. Linghang has nearly ten years of trade experience since its establishment in 2015. Good service is an ongoing requirement, and it has always been so. You can rest assured of our timeliness of delivery and flexibility in expanding supply.
The service is trustworthy. We have been a high-quality supplier of China Manufacturing Network, and have been committed to foreign trade. Our foreign trade capability has been audited by China Manufacturing Network. We sincerely and warmly welcome your visit and advice, improve our shortcomings, learn new technologies, improve product performance and achieve mutual benefit.