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Help CenterSilicon Steel & Silicon Steel Coil，27QG100、23KQ105、30QG090
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Silicon Steel Product Description
Silicon steel, also known as electrical steel / silicon steel sheet, is a low-carbon soft magnetic alloy with a silicon content of 0.5% - 4.5%. It features low core loss and high magnetic induction, serving as the core material for electromagnetic equipment such as motors, transformers and generators. The details covering specifications, classification, applications and export standards are as follows, suitable for Alibaba promotion and customer inquiry responses.
1. Core Technical Parameters
1.1 Chemical Composition (Mass Fraction)
| Element | Content Range | Function |
|---|---|---|
| Silicon (Si) | 0.5% - 4.5% | Significantly reduces core loss and improves resistivity; excessive silicon increases brittleness |
| Carbon (C) | ≤0.005% | Strictly controlled to lower hysteresis loss and enhance permeability |
| Aluminum (Al) | 0.2% - 0.5% | Refines grains and optimizes processability |
| Manganese (Mn) | 0.1% - 0.3% | Deoxidation and sulfide control, improving comprehensive properties |
| Sulfur (S)/Phosphorus (P) | S≤0.005%; P≤0.015% | Prevents grain boundary embrittlement and magnetic performance degradation |
| Iron (Fe) | Balance | Matrix material ensuring basic mechanical and magnetic properties |
1.2 Key Magnetic Properties
| Index | Symbol | Unit | Definition | Standard Requirement |
|---|---|---|---|---|
| Total Loss | P | W/kg | Energy loss per unit weight under alternating magnetic field | Non-oriented: 1.8-3.5; Oriented: 0.9-1.7 |
| Magnetic Induction | B50 | T | Magnetic induction at 50Hz/1.5T | Non-oriented ≥1.65T; High-oriented ≥1.72T |
| Stacking Factor | - | % | Effective proportion of laminated cores | 95% - 98% |
1.3 Grade Specification
Non-oriented Silicon Steel: e.g. 35WW250, 35 stands for thickness 0.35mm, WW represents non-oriented, 250 refers to core loss 2.50W/kg at 50Hz/1.5T
Grain-oriented Silicon Steel: e.g. 27QG100, 27 stands for thickness 0.27mm, QG represents high magnetic induction oriented, 100 refers to core loss 1.00W/kg at P1.7/50
1.4 Regular Size Range
| Type | Thickness(mm) | Width(mm) | Inner Diameter(mm) | Coil Weight(t) |
|---|---|---|---|---|
| Non-oriented Silicon Steel | 0.20/0.25/0.35/0.50/0.65 | 100-1250 | 610/760 | 10-24 |
| Grain-oriented Silicon Steel | 0.23/0.27/0.30/0.35 | 700-1200 | 508 | 3-8 |
2. Product Classification & Features
2.1 Non-oriented Electrical Steel
Applications: Rotating magnetic field equipment, including motors, compressors, household appliances, new energy vehicle drive motors
Advantages: Isotropic magnetic properties, excellent stamping performance; low grades for small motors, high grades for high-efficiency industrial motors
Typical Grades: 35WW250, 50WW310, 65WY600
2.2 Grain-oriented Electrical Steel
Applications: Unidirectional magnetic field equipment, including transformers, reactors, transformers, large generators
Advantages: Ultra-high magnetic induction and low core loss along rolling direction, reducing core volume by 20%-30%; HiB for ultra-efficient transformers
Typical Grades: 27QG100, 23KQ105, 30QG090
3. Application Fields
Power Equipment: Transformers, mutual inductors, reactors
Industrial Motors: High-efficiency motors, servo motors
New Energy: Wind turbines, EV motors, photovoltaic inverters
Home Appliances: Air conditioner compressors, refrigerator motors
4. Quality & Service
Comply with GB/T 2521-2024, supporting third-party inspection reports
Strict tolerance control, smooth surface free of oxidation and scratches
Customized slitting, cutting and stamping services, global delivery
Professional material selection guidance for different equipment
Production: 5-7 days for regular orders
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