Metals & alloys · Ferrous alloys
Fe–Si electrical steel reference
An iron–silicon soft-magnetic material family engineered to reduce core losses and control magnetic response in motors, generators and transformers.
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01
Overview
- Material class
- Metals & alloys
- Category
- Ferrous alloys
- Family
- Electrical Steel
- Product forms
- Sheet/plate, Bar/rod
Composition
| Constituent | Min | Max | Typical | Note |
|---|---|---|---|---|
| Si | 1 | 3.5 | 3 | grade dependent |
| Al | 0 | 1 | 0.3 | route dependent |
| C | 0.01 | 0.003 | ||
| Mn | 0.2 | |||
| Fe | Balance |
02
Properties and conditions
Engineering properties
| Property | Value | Unit | Condition |
|---|---|---|---|
| Density | 7.60–7.75 | g/cm³ | silicon dependent |
| Electrical resistivity | 45–60 | µΩ·cm | silicon dependent |
| Saturation polarization | 1.9–2.1 | T | grade dependent |
| Elastic modulus | 185–205 | GPa | Representative; verify product form and condition |
| Core loss | grade-specific | W/kg | must be stated at frequency and induction |
| Sheet thickness | 0.10–0.65 | mm | product family range |
Conditions
Representative supplied condition
Condition not fully specified in the source record.
03
Processing and use
Processing
- Texture, grain size, residual stress, coating and punching damage control magnetic performance.
- Property comparison requires identical frequency, induction and test method.
Applications
- Electric motors
- Generators
- Transformers
- Inductors and magnetic cores
Selection considerations
- Do not compare core-loss values without test conditions.
- Non-oriented and grain-oriented products serve different magnetic-flux geometries.
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04
Standards and related materials
Standards and designations
| System | Designation | Note |
|---|---|---|
| IEC | 60404 series | magnetic materials and test methods |
| ASTM | A677/A683/A876 | non-oriented and grain-oriented product families |
| EN | 10106/10303 | electrical steel products |
05
Sources and context
Sources
- IEC 60404 magnetic materials seriesExisting reference
- IMMES electrical-steel reference cardExisting reference
- ASM International and public alloy designation referencesIdentity reference
Confirm the applicable specification, product form and condition before using values for design or procurement.
Supply and sustainability
Large-volume global market with specialized high-grade products concentrated among a smaller supplier base.
Higher-efficiency electrical steel can reduce lifetime energy losses far beyond its production footprint; thin-gauge processing raises manufacturing intensity.
Strategic context
Established engineering material with documented processing–performance relationships.