Grain-Oriented Electrical Steel Sheets

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NIPPON STEEL manufactures a wide range of electrical steel sheets in order to meet the demands of various applications. Based on our technologies that have been fostered through the research and manufacture for many years, we have worked hard in improving the product quality and developing new products and have delivered many achievements.
Our products, GRAIN-ORIENTED ELECTRICAL STEEL SHEETS such as ORIENTCORE HI-B, ORIENTCORE HI-B LS, and ORIENTCORE HI-B PM are highly regarded for their superb quality and abundant product line-up.

Features

  • - ORIENTCORE
  • - ORIENTCORE∙HI-B™
  • - ORIENTCORE∙HI-B™∙LS
  • - ORIENTCORE∙ HI-B™∙PM

Stable product quality

Manufacture with state-of-art equipment and superb quality control system ensures stable quality constantly.

Extremely low iron loss in the rolling direction

Extremely low iron loss in the rolling direction allows ORIENTCORE∙HI-B to be superior in directional property to ORIENTCORE. ORIENTCORE∙HI-B∙LS and ORIENTCORE∙ HI-B∙PM boast even lower iron loss values.

Extremely high permeability in the rolling direction

Excellent directional property allows for extremely high permeability in the rolling direction for the entire range of magnetic field. ORIENTCORE∙HI-B, ORIENTCORE∙HI-B∙LS, and ORIENTCORE∙ HI-B∙PM exhibit a magnetic flux density about 0.1 tesla higher at B10 than that of conventional grain-oriented electrical steel sheets.

High lamination factor

Being cold-rolled allows for beautiful shapes and smooth surfaces, and it also results in high lamination factors.

Superb insulation coating

The surface is coated with S that are excellent in insulation, adhesion, heat resistance, and corrosion resistance.

Types and typical applications

ORIENTCORE™ Z

For this product, the easy magnetizing direction of the crystal is arranged in the rolling direction. It exhibits excellent magnetic properties in this direction and is widely used in the cores of large/small transformers and large power generators.

ORIENTCORE∙HI-B™ ZH

This product has much improved crystal orientation compared with ORIENTCORE. It offers lower iron loss and higher magnetic flux densities. It is used for the cores of large/small transformers.

ORIENTCORE∙HI-B™∙LS ZDKH

This product is made by irradiating the surface of ORIENTCORE∙HI-B with a laser beam. This process makes its iron loss even lower by refining the magnetic domains. It is noted that applying stress-relief annealing eliminates the effect of laser beam irradiation. It is best for the cores in large transformers.

ORIENTCORE∙HI-B™∙PM ZDMH

This product is made by processing the surface of the ORIENTCORE∙HI-B product to refine the magnetic domains, which makes the iron loss lower. As it withstands stress-relief annealing (up to approx. 800°C in a non-oxidizing atmosphere), it can be widely used for various types of transformers, typically power transformers.

Specification

ORIENTCORE™ Z/ORINETCORE HI-B™ ZH
Type Assumed
Density
(kg/dm3)		 Iron Loss Induction
(T)		 Lamination
Factor
(%)		 Number of
Bends
Product Grade Thickness
(mm)
(W/kg) (W/lb)
W17/50 B8 L
ORIENTCORE 23Z110 0.23 7.65 ≦1.10 ≦0.49 ≧1.80 ≧94.5 ≧1
27Z120 0.27 7.65 ≦1.20 ≦0.54 ≧1.80 ≧95.0 ≧1
27Z130 7.65 ≦1.30 ≦0.58 ≧1.80 ≧95.0 ≧1
30Z120 0.30 7.65 ≦1.20 ≦0.54 ≧1.80 ≧95.5 ≧1
30Z130 7.65 ≦1.30 ≦0.58 ≧1.80 ≧95.5 ≧1
30Z140 7.65 ≦1.40 ≦0.63 ≧1.80 ≧95.5 ≧1
35Z135 0.35 7.65 ≦1.35 ≦0.61 ≧1.80 ≧96.0 ≧1
35Z145 7.65 ≦1.45 ≦0.65 ≧1.80 ≧96.0 ≧1
35Z155 7.65 ≦1.55 ≦0.70 ≧1.80 ≧96.0 ≧1
ORIENTCORE
HI-B		 20ZH80 0.20 7.65 ≦0.80 ≦0.36 ≧1.88 ≧94.0 ≧1
20ZH85 7.65 ≦0.85 ≦0.38 ≧1.88 ≧94.0 ≧1
23ZH85 0.23 7.65 ≦0.85 ≦0.38 ≧1.88 ≧94.5 ≧1
23ZH90 7.65 ≦0.90 ≦0.40 ≧1.88 ≧94.5 ≧1
23ZH95 7.65 ≦0.95 ≦0.43 ≧1.88 ≧94.5 ≧1
23ZH100 7.65 ≦1.00 ≦0.45 ≧1.88 ≧94.5 ≧1
27ZH90 0.27 7.65 ≦0.90 ≦0.40 ≧1.88 ≧95.0 ≧1
27ZH95 7.65 ≦0.95 ≦0.43 ≧1.88 ≧95.0 ≧1
27ZH100 7.65 ≦1.00 ≦0.45 ≧1.88 ≧95.0 ≧1
27ZH110 7.65 ≦1.10 ≦0.49 ≧1.88 ≧95.0 ≧1
30ZH95 0.30 7.65 ≦0.95 ≦0.43 ≧1.88 ≧95.5 ≧1
30ZH100 7.65 ≦1.00 ≦0.45 ≧1.88 ≧95.5 ≧1
30ZH105 7.65 ≦1.05 ≦0.47 ≧1.88 ≧95.5 ≧1
30ZH110 7.65 ≦1.10 ≦0.49 ≧1.88 ≧95.5 ≧1
30ZH120 7.65 ≦1.20 ≦0.54 ≧1.88 ≧95.5 ≧1
35ZH110 0.35 7.65 ≦1.10 ≦0.49 ≧1.88 ≧96.0 ≧1
35ZH115 7.65 ≦1.15 ≦0.52 ≧1.88 ≧96.0 ≧1
35ZH125 7.65 ≦1.25 ≦0.56 ≧1.88 ≧96.0 ≧1
35ZH135 7.65 ≦1.35 ≦0.61 ≧1.88 ≧96.0 ≧1
Tests are conducted in accordance with JIS C 2550:2000, iron loss and Induction are measured by using specimens taken longitudinal to the rolling direction after stress-relief annealing.
L:specimens taken longitudinal to the rolling direction
ORIENTCORE HI-B™･LS ZDKH
Type Assumed
Density
(kg/dm3)		 Iron Loss Induction
(T)		 Lamination
Factor
(%)		 Number of
Bends
Product Grade Thickness
(mm)
(W/kg) (W/lb)
W17/50 B8 L
ORIENTCORE
HI-B･LS		 20ZDKH65 0.20 7.65 ≦0.65 ≦0.30 ≧1.88 ≧94.0 ≧1
20ZDKH70 7.65 ≦0.70 ≦0.32 ≧1.88 ≧94.0 ≧1
20ZDKH75 7.65 ≦0.75 ≦0.34 ≧1.88 ≧94.0 ≧1
23ZDKH70 0.23 7.65 ≦0.70 ≦0.32 ≧1.88 ≧94.5 ≧1
23ZDKH75 7.65 ≦0.75 ≦0.34 ≧1.88 ≧94.5 ≧1
23ZDKH80 7.65 ≦0.80 ≦0.36 ≧1.88 ≧94.5 ≧1
23ZDKH85 7.65 ≦0.85 ≦0.38 ≧1.88 ≧94.5 ≧1
23ZDKH90 7.65 ≦0.90 ≦0.40 ≧1.88 ≧94.5 ≧1
27ZDKH85 0.27 7.65 ≦0.85 ≦0.38 ≧1.88 ≧95.0 ≧1
27ZDKH90 7.65 ≦0.90 ≦0.40 ≧1.88 ≧95.0 ≧1
27ZDKH95 7.65 ≦0.95 ≦0.43 ≧1.88 ≧95.0 ≧1
Tests for iron loss and induction are conducted in accordance with JIS C 2556:2015 using as-sheared single sheet test samples without stress-relief annealing. Tests for the lamination factor and bending are conducted in accordance with JIS C 2550:2000.
L:specimens taken longitudinal to the rolling direction
ORINETCORE HI-B™･PM ZDMH
Type Assumed
Density
(kg/dm3)		 Iron Loss (W/kg) Induction (T) Lamination
Factor
(%)		 Number of
Bends
Product Grade Thickness
(mm)
(W/kg) (W/lb)
W17/50 B8 L
ORIENTCORE
HI-B･PM		 20ZDMH70 0.20 7.65 ≦0.70 ≦0.32 ≧1.87 ≧94.0 ≧1
20ZDMH75 7.65 ≦0.75 ≦0.34 ≧1.87 ≧94.0 ≧1
23ZDMH75 0.23 7.65 ≦0.75 ≦0.34 ≧1.87 ≧94.5 ≧1
23ZDMH80 7.65 ≦0.80 ≦0.36 ≧1.87 ≧94.5 ≧1
23ZDMH85 7.65 ≦0.85 ≦0.38 ≧1.87 ≧94.5 ≧1
23ZDMH90 7.65 ≦0.90 ≦0.40 ≧1.87 ≧94.5 ≧1
Tests are conducted in accordance with JIS C 2550:2000. iron loss and Induction are measured by using specimens taken longitudinal to the rolling direction after stress-relief annealing.
L:specimens taken longitudinal to the rolling direction

MAJOR INTERNATIONALLY-ACCEPTED STANDARDS

Thickness
mm		 NIPPON STEEL
W17/50 Max.		 JIS C 2553:2012
W17/50 Max.		 IEC 60404-8-7:2008
W17/50 Max.		 GB/T 2521:2008
W17/50 Max.
  W/kg   W/kg   W/kg   W/kg
0.23 23ZDKH75 0.75            
23ZDKH80 0.80 23R080 0.80        
23ZDKH85 0.85 23R085 0.85 M85-23P5b) 0.85 23QG085b) 0.85
23ZDKH90 0.90 23R090 0.90 M90-23P5b) 0.90 23QG090b) 0.90
23ZH85 0.85     M85-23P5 0.85 23QG085 0.85
23ZH90 0.90 23P090 0.90 M90-23P5 0.90 23QG090 0.90
23ZH95 0.95 23P095 0.95 M95-23P5 0.95 23QG095 0.95
23ZH100 1.00 23P100 1.00 M100-23P5 1.00 23QG100 1.00
23Z110 1.10 23G110 1.10 M110-23S5 1.10 23Q110 1.10
        M120-23S5 1.20 23Q120 1.20
            23Q130 1.30
0.27 27ZDKH85 0.85            
27ZDKH90 0.90 27R090 0.90 M90-27P5b) 0.90 27QG090b) 0.90
27ZDKH95 0.95 27R095 0.95 M95-27P5b) 0.95 27QG095b) 0.95
27ZH90 0.90     M90-27P5 0.90 27QG090 0.90
27ZH95 0.95 27P095 0.95 M95-27P5 0.95 27QG095 0.95
27ZH100 1.00 27P100 1.00 M100-27P5 1.00 27QG100 1.00
            27QG105 1.05
27ZH110 1.10 27P110 1.10 M110-27P5 1.10 27QG110 1.10
            27Q110 1.10
27Z120 1.20 27G120 1.20 M120-27S5 1.20 27Q120 1.20
27Z130 1.30 27G130 1.30 M130-27S5 1.30 27Q130 1.30
            27Q140 1.40
0.30 30ZH95 0.95            
30ZH100 1.00 30P100 1.00        
30ZH105 1.05 30P105 1.05 M105-30P5 1.05 30QG105 1.05
30ZH110 1.10 30P110 1.10 M110-30P5 1.10 30QG110 1.10
               
30ZH120 1.20 30P120 1.20 M120-30P5 1.20 30QG120 1.20
30Z120 1.20 30G120 1.20     30Q120 1.20
30Z130 1.30 30G130 1.30 M130-30S5 1.30 30Q130 1.30
30Z140 1.40 30G140 1.40 M140-30S5 1.40 30Q140 1.40
            30Q150 1.50
0.35 35ZH110 1.10            
35ZH115 1.15 35P115 1.15 M115-35P5 1.15 35QG115 1.15
35ZH125 1.25 35P125 1.25 M125-35P5 1.25 35QG125 1.25
35ZH135 1.35 35P135 1.35 M135-35P5 1.35 35QG135 1.35
35Z135 1.35 35G135 1.35     35Q135 1.35
35Z145 1.45 35G145 1.45 M145-35S5 1.45 35Q145 1.45
35Z155 1.55 35G155 1.55 M155-35S5 1.55 35Q155 1.55
NOTE: b) Domain refined condition

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