M4 Grain-Oriented Electrical Steel

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Name: M4 Grain-Oriented Silicon Steel
Brand: PromiSiS
Silicon Content : 3%
Manufacturing Process: hot rolling/cold rolling
Applications: power, electrical, and military industries

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Product Details

Available GOES Grades

Standard	Typical Grades	Application
ASTM A876	M-2, M-3, M-4	Transformer cores (USA, global)
JIS C2553	30Z155, 27Z130	Japanese transformer manufacturers
EN 10107	M0H, M3H, M5H	European high-grade transformer steel
IEC 60404-8-7	CGO, HGO	International classification

Types of GOES We Supply

1. Conventional Grain-Oriented (CGO)

Used in general-purpose transformers, offers balanced cost and performance.

2. High Permeability Grain-Oriented (HGO)

Improved magnetic induction and lower core loss, widely used in energy-efficient and low-noise transformers.

3. Laser-Scribed GOES (Hi-B / Ultra HGO)

Enhanced domain refinement for ultra-low loss applications; enables compact and efficient transformer design.

Key Technical Properties

Parameter	Conventional GOES (CGO)	High Permeability (Hi-B)	Thin-Gauge HGO
Thickness	0.27mm, 0.30mm	0.23mm, 0.27mm	0.18mm, 0.15mm
Core Loss (P1.7/50)	1.10–0.90 W/kg	0.85–0.65 W/kg	0.95–0.75 W/kg*
Induction (B₈₀₀)	≥1.88 T	≥1.93 T	≥1.90 T
Grades	M090-27P5, 30P105	23ZDKH85, 27ZDKH90	JGHF® 0.18mm
Coating	C-5 Phosphate	C-6 Chromate/ZML	Laser-Insulated

Processing & Surface Coating

GOES is supplied with insulation coatings suited for transformer manufacturing:

C-5 (Fully Insulated) – High resistance, heat-resistant coating
C-9 (Semi-Insulated) – Balance between insulation and weldability
Phosphate or Organic Coatings – For specific lamination bonding applications

We provide both un-slitted coils and ready-to-stack laminations.

Product Specifications

Property	Typical Value / Range
Silicon Content	2.9% – 3.5%
Thickness	0.18 mm – 0.35 mm
Magnetic Induction (B800)	≥ 1.88 T
Core Loss (P17/50)	≤ 1.0 W/kg (depending on grade)
Grain Orientation	Goss texture {110}<001>
Coating Type	C-5, C-9, or customized insulation
Surface Resistance	> 20 Ω/sq (depending on coating)
International Standards	ASTM A876, IEC 60404-8-7, JIS C2553

Packaging & Delivery

Applications of GOES

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M4 Grain-Oriented Electrical Steel