SILICON STEEL (SI)
Magnetic silicon steel is a silicon-alloyed steel specially used as magnetic material in transformers, motors, and electrical devices because of its low magnetic loss and high efficiency
TECHNICAL SPECIFICATIONS:
SPEC | STANDARD | SPEC CD | ĐỘ DÀY(mm) |
Silicon Steel (SI) | JIS C2552 | 50A470 | 0,5mm |
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| 50A800 | 0,5mm |
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| 50A1000 | 0,5mm |
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| 50A1300 | 0,5mm |
Magnetic silicon steel (also called electrical steel or silicon electrical steel) is a special type of steel alloyed with silicon (Si) to improve its magnetic properties, usually containing 0.5 – 6.5% Si.
Main characteristics
- Silicon content: Adding Si increases electrical resistivity and reduces eddy current loss.
- Magnetic properties: High magnetic permeability, low core loss → easily conducts magnetic flux.
- Mechanical properties: More brittle than normal steel (due to high Si content), harder to machine, but easy to roll into thin sheets.
- Usually produced as thin laminations (0.2 – 0.5 mm) to assemble into cores.
DESCRIPTION
- Non-oriented electrical steel (NOES)
- Crystal grains are randomly oriented.
- Magnetic properties are uniform in all directions.
- Used in electric motors, generators, compressors.
- Grain-oriented electrical steel (GOES)
- Crystal grains are oriented along the rolling direction.
- Excellent magnetic performance along the rolling direction.
- Used in transformers, high-voltage equipment.
APPLICATION:
- Transformer cores (low core loss, high efficiency).
- Motor and generator cores, refrigeration compressors.
- Electrical and electronic equipment that requires high efficiency and low energy loss.
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