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Grain-oriented Silicon Steel
Product: Electrical Steel/Silicon Steel Brand: BAOSTEEL/WISCO
Online ConsultationDescription
Electrical steel usually referred to as cold-rolled electrical steel, can be divided into two major categories including grain-oriented electrical steel and non-oriented electrical steel. Grain-oriented electrical steel, with its easy magnetization direction parallel to the rolling direction, has excellent magnetic properties in this direction including low core loss, high permeability, and low magnetostriction, and is widely used in the transformer industry. Further, it can obtain lower core loss by domain refinement treatment. Meanwhile, non-oriented electrical steel, featured by a random distribution of grain orientation and magnetic isotropy, is widely applicable to the motor industry.
Grain-oriented silicon steel has long been known as the art work of steel, which are technologically sophisticated and technically complicated. Whether to master the technology for producing the grain-oriented silicon steel has always been used as an indicator of a steel manufacturer’s technological capability.
Features of Silicon Steel
Great Electromagnetic Performance
The silicon steel comes with low iron loss and high magnetic induction, especially HiB steel which has lower iron loss and higher magnetic induction.
Good Shape
The material is often made in strips. Slight longitudinal and transverse thickness difference ensures a high lamination factor.
Insulating Coating
Uniform color, excellent insulative, high adhesion strength, high heat resistance, excellent processability, and superior corrosion resistance. Our silicon steel sheet is available in multiple insulating coating options, which have been reaching and RoHS certified that harmful matter content complies with domestic and overseas regulations on environmental protection.
Excellent Processability
Accessible to die-cut, with high dimensional accuracy.
Surface Quality
Our silicon steel features a smooth surface, without defects such as rust, rolling marks, holes, cold-lap,folds, bubbles, etc
Mechanical Property
Mechanical Property |
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Grade |
Yeild Strength |
Ultra |
Ductility |
Hardness |
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 |
M50W250 |
430 |
560 |
19.0 |
230 |
M50W270 |
410 |
550 |
21.5 |
225 |
M50W290 |
395 |
545 |
22.5 |
220 |
M50W310 |
385 |
510 |
24.5 |
210 |
M50W350 |
350 |
475 |
26.5 |
190 |
M50W400 |
320 |
460 |
36.0 |
170 |
M50W470 |
295 |
425 |
35.0 |
160 |
M50W600 |
280 |
410 |
37.0 |
140 |
M50W800 |
285 |
405 |
38.5 |
135 |
M50W1300(D) |
250 |
360 |
40.0 |
115 |
Insulating Coating |
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Coating types |
M11 |
M21 |
Component |
Chromium containing , semi organic coating |
Chromium free, semi organic coating |
Coating thickness(μm) |
0.7~1.5 |
0.8~5.0 |
Interlayer resistance |
≥100 |
≥100 |
Adhesive property |
Class A or class B |
Class A or class B |
Punching property |
Excellent |
Excellent |
Antirust property |
Excellent |
Excellent |
Heat resisting property |
Resistant annealing at 750 C, N2 protection, for 2h |
Annealing resistance in general |
Fields of application
Fields of application |
Grain-oriented electrical steel |
Non-oriented electrical steel |
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Series G |
Series P |
Series R |
Series A |
Series AH |
Series AR |
Series AT |
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230~400 |
440~700 |
800~1300 |
230~470 |
600~1000 |
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Rotators |
Large-sized motors |
√ |
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√ |
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Medium-sized motors |
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√ |
√ |
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√ |
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Compressor motors |
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√ |
√ |
√ |
√ |
√ |
√ |
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General motors |
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√ |
√ |
√ |
√ |
√ |
√ |
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Small-sized precision motors |
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√ |
√ |
√ |
√ |
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√ |
√ |
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Motors for electric cars |
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√ |
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√ |
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√ |
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Static device |
High-frequency motors |
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√ |
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√ |
Large-sized transformers |
√ |
√ |
√ |
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Small-sized power transformers |
√ |
√ |
√ |
√ |
√ |
√ |
√ |
√ |
√ |
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Transformers for instruments |
√ |
√ |
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√ |
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Reactors and magnetic amplifiers |
√ |
√ |
√ |
√ |
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Power switches |
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√ |
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Transformers for welding |
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√ |
√ |
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Voltage regulators |
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√ |
√ |
√ |
√ |
√ |
√ |
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Magnetic sealers |
√ |
√ |
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√ |
√ |
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Electromagnetic devices for accelerators |
√ |
√ |
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√ |
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√ |
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Material Selection
Grain-oriented electrical steel
Varieties |
Common type |
High induction type |
Domain refined |
Large motors |
√ |
√ |
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Large transformers |
√ |
√ |
√ |
Medium and small transformers |
√ |
√ |
√ |
Distributing transformers |
√ |
√ |
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Voltage regulator |
√ |
√ |
√ |
Reactor and magnetic amplifier |
√ |
√ |
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IF transformer |
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√ |
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Mutual inductor |
√ |
√ |
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TV transformer |
√ |
√ |
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Radio transformer |
√ |
√ |
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Radio broadcast transformer |
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√ |
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-Production Process
Grain-oriented electrical steel
Inspection Certificate
Product Packing
Q&A
Q:What is silicon steel? What is electric steel?
A:Electric steel is magnetically soft material among functional material, and is most wildly used. Generally speaking, silicon steel refers to electric steel with silicon content between 0.5%~6.5% Si. The general electric steel also includes the part that contains little silicon (Si<0.5%). However, nowadays the 2 concepts are not clearly defined, and can be interchangeable.
Q:Classification of electric steel
A:It is roughly classified into hot-rolled electric steel and cold-rolled electric steel.Zhongyuantong steel produces cold-rolled electric steel, which can be further classified into oriented electric steel and non- oriented electric steel.
Q:What is magnetic field?
A:The space field for the acting force between the two magnetic poles is described as magnetic field strength H, the unit is A/m (Ampere/meter). It is the driving primary field produced by external input electric current after the electric steel is made into motor.
Q:Difference between electric steel B50A300 and B50AR300
A:B50A300 is whole processed product. It can be put into use after being purchased or annealing (reducing the loss through stress relief and construction perfection). But B50AR300 must go through annealing before use.
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