Non-Grain Oriented Electrical Steel Roll Forming Material Guide (NGO Steel)

Non-Grain Oriented Electrical Steel Roll Forming Material

1. Overview of Non-Grain Oriented Electrical Steel in Roll Forming

Non-Grain Oriented Electrical Steel (NGO Steel) is a type of silicon steel with uniform magnetic properties in all directions. Unlike grain oriented steel, it does not rely on directional alignment, making it suitable for rotating electrical equipment.

In roll forming, NGO steel is widely used for electric motors, generators, alternators, and rotating magnetic components.

Compared to grain oriented steel, NGO steel offers flexibility in design and forming, while still providing good magnetic efficiency.

2. Material Composition & Structure

NGO electrical steel consists of:

Iron base metal
Silicon content (typically 1% – 3.5%)
Very low carbon content

Key Feature

Random grain orientation
Uniform magnetic properties in all directions

3. Available Coil Specifications

Thickness Range

0.2mm – 1.0mm

Coil Width

600mm – 1250mm

Coil Weight

2 tons – 8 tons

Coil ID / OD

ID: 508mm / 610mm
OD: up to 1500mm

Tolerance

Tight thickness tolerances
Consistent material quality

4. Mechanical Properties

Typical values:

Yield Strength: 250 – 450 MPa
Tensile Strength: 350 – 600 MPa
Elongation: 10% – 25%
Hardness: 120 – 200 HB

5. Coating Types

NGO steel is supplied with:

Insulation coatings (C2, C5, etc.)
Oxide coatings
Varnish coatings

Purpose

Reduce eddy current losses
Improve electrical performance
Insulate between laminations

6. Surface Finishes

Smooth finish
Insulated coating surface
Oxide-treated surface

7. Common Roll Forming Applications

Electric motor laminations
Generator cores
Alternators
Rotating electrical components
Electrical enclosures

8. Advantages of NGO Electrical Steel

Uniform magnetic properties
Good energy efficiency
Suitable for rotating applications
Easier forming compared to GO steel
Consistent performance

9. Disadvantages / Limitations

Higher cost than standard steel
Lower efficiency than GO steel
Sensitive to surface damage
Requires precision handling
Limited structural applications

10. Roll Forming Machine Considerations

Roll Tooling

Precision rollers required
Surface protection important

Speed

5–25 m/min

Lubrication

Not recommended

Cutting

High precision cutting required

Common Issues

Coating damage
Edge burrs
Surface defects

11. Common Problems in Production

Insulation coating damage
Edge burr formation
Surface scratching
Dimensional inaccuracies
Thin material distortion

12. Pricing Guide

Typical global pricing:

Low: $1200–$1800 per ton
Medium: $1800–$2500 per ton
High: $2500–$3500+ per ton

Factors affecting price:

Thickness
Coating type
Grade quality
Supplier

13. Comparison with Other Materials

NGO vs GO Steel

NGO = uniform magnetic properties
GO = directional magnetic properties

NGO vs Mild Steel

NGO = magnetic optimized
Mild = structural

NGO vs Silicon Steel (General)

NGO = standard form of silicon steel

14. Best Industries Using NGO Steel

Electric motor manufacturing
Automotive (EV motors)
Industrial equipment
Power generation
Electrical engineering

15. How to Choose NGO Electrical Steel

Choose NGO Steel When:

Rotating electrical components required
Uniform magnetic performance needed
Motor or generator applications
Flexible forming required

Avoid When:

Transformer cores required (use GO steel)
Structural applications
Low-cost fabrication

16. FAQ Section

What is non-grain oriented electrical steel?

A silicon steel with uniform magnetic properties.

Where is NGO steel used?

In motors, generators, and rotating equipment.

How is it different from GO steel?

It is not directional.

Can it be roll formed?

Yes, with proper precision setup.

Is it cheaper than GO steel?

Yes, generally lower cost.

17. Machine Matcher Section

We supply roll forming machines for all material types including non-grain oriented electrical steel.

Custom-built machines to your profile
New machines built to specification
Global delivery available
UK and USA technical support

Contact:
Machine Matcher
Sales & Technical Team

Quick Specs

Thickness
0.2–1.0mm

Yield Strength
250–450 MPa

Coil Width
600–1250mm

Coil ID
508 / 610mm