Silicon steel

Silicon steel is an iron‑silicon soft‑magnet alloy with silicon added to reduce core loss and boost magnetic permeability. Commonly used in power grid, new‑energy vehicle and electrical equipment fields.

Domain refined high induction silicon steel coil

Oriented Electrical Steel

Silicon steel with high magnetic susceptibility orientation has high saturation magnetic induction, low iron loss and low eddy current loss. Its main principle is to control the orientation of silicon steel grains, so that the magnetic domains can be arranged in a specific direction, so as to improve the magnetic induction and permeability of the material.

Type Nominal Thickness
mm 		Tensile strenght
N/mm2 		Elongation
% 		HV5
Hardness 		Number of bends Lamination factor %
L C L
Domamin refined high induction 0.18 368 417 13 177 22 96.5
0.20 367 433 13 177 22 97.0
0.23 342 417 6 177 20 97.2
0.27 352 426 8 176 17 97.5
0.30 336 408 9 177 19 98.0

NOTE: a. Testing standards are GB/T228, GB/T 4340.1, GB/T2522.

b. Above properties are typical values for reference only and not as a guarantee.

c. L- Parallel to the rolling direction. C-perpendicular to the rolling direction.

Type Grade Nominal thickness Theoretical density P1.7/500
Max.Core loss 		B800
Min.Induction 		Min.Lamination factor
mm kg/dm3 W/kg T %
Domamin refined high induction 18RK070 0.18 7.65 0.70 1.86 92.0
18RK075 0.18 7.65 0.75 1.86 92.0
18RK085 0.18 7.65 0.85 1.86 92.0
20RK070 0.20 7.65 0.70 1.86 93.0
20RK075 0.20 7.65 0.75 1.86 93.0
20RK085 0.20 7.65 0.85 1.86 93.0
23RK075 0.23 7.65 0.75 1.88 94.5
23RK080 0.23 7.65 0.80 1.88 94.5
23RK085 0.23 7.65 0.75 1.88 94.5
23RK090 0.23 7.65 0.90 1.88 94.5
23RK100 0.23 7.65 1.00 1.88 94.5
27RK085 0.27 7.65 0.85 1.89 95.0
27RK090 0.27 7.65 0.90 1.89 95.0
27RK095 0.27 7.65 0.95 1.89 95.0
27RK100 0.27 7.65 1.00 1.89 95.0
27RK120 0.27 7.65 1.20 1.89 95.0
30RK095 0.30 7.65 0.95 1.89 95.5
30RK100 0.30 7.65 1.00 1.89 95.5
30RK105 0.30 7.65 1.05 1.89 95.5
30RK120 0.30 7.65 1.20 1.89 95.5

NOTE: a. Testing standards are GB/T3655(Q type and QG type), GB/T 13789 (RK type).

b. Q type and QG type test specimens are sheared to the rolling direction and annealed for stress relieving.

Grade Nominal Thickness
mm 		Theoretical density
kg/dm3 		Core loss
W/kg 		Induction
50Hz 60Hz Induction
1.5T 1.7T 1.5T 1.7T 800A/m 2500A/m
18RK070 0.18 7.65 0.50 0.68 0.64 0.88 1.91 1.95
18RK075 0.18 7.65 0.51 0.72 0.67 0.93 1.90 1.94
18RK085 0.18 7.65 0.56 0.83 0.73 1.06 1.89 1.95
20RK070 0.20 7.65 0.50 0.68 0.66 0.88 1.92 1.96
20RK075 0.20 7.65 0.52 0.74 0.68 0.95 1.90 1.95
20RK085 0.20 7.65 0.57 0.84 0.74 1.08 1.89 1.94
23RK075 0.23 7.65 0.56 0.74 0.74 0.98 1.92 1.96
23RK080 0.23 7.65 0.58 0.78 0.76 1.03 1.92 1.96
23RK085 0.23 7.65 0.60 0.83 0.80 1.09 1.91 1.96
23RK090 0.23 7.65 0.62 0.88 0.82 1.13 1.90 1.96
23RK100 0.23 7.65 0.69 0.97 0.90 1.25 1.90 1.95
27RK085 0.27 7.65 0.62 0.83 0.82 1.09 1.92 1.95
27RK090 0.27 7.65 0.65 0.88 0.87 1.16 1.92 1.96
27RK095 0.27 7.65 0.67 0.93 0.89 1.22 1.91 1.96
27RK100 0.27 7.65 0.71 0.98 0.94 1.29 1.90 1.95
27RK120 0.27 7.65 0.77 1.10 1.02 1.43 1.89 1.95
30RK095 0.30 7.65 0.70 0.94 0.94 1.24 1.93 1.96
30RK100 0.30 7.65 0.72 0.97 0.96 1.29 1.92 1.96
30RK105 0.30 7.65 0.74 1.00 0.98 1.31 1.91 1.96
30RK120 0.30 7.65 0.80 1.08 1.06 1.41 1.90 1.95