This page explains how Electrical Steel Lamination Core is classified within Manufacture of Electric Motors, Generators and Transformers. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
Stacked electrical steel laminations forming magnetic cores for motors, generators, and transformers
Technical details and manufacturing context for Electrical Steel Lamination Core
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Core Loss at 1.5T/50HzRequired | 2.0–4.5 W/kg | Specific power loss at 1.5 tesla induction and 50Hz frequencyIEC 60404-2 |
| Stacking FactorRequired | 0.95–0.97 % | Percentage of solid steel in total core volumeIEC 60404-13 |
| Lamination ThicknessRequired | 0.20–0.35 mm | Thickness of individual steel sheetsIEC 60404-8-1 |
| Core WeightRequired | 5–500 kg | Total mass of the assembled lamination stack |
| Maximum Operating Temperature | 180–220 °C | Highest temperature the core can withstand without degradationIEC 60085 |
| Surface Insulation Resistance | ≥5 Ω·cm² | Electrical resistance between laminationsIEC 60404-1 |
| Magnetic Flux Density (B25) | 1.5–1.8 T | Higher B25 allows smaller core for same flux.IEC 60404-2 |
| Tensile Strength | 350–550 MPa | Ensures mechanical integrity during stamping and stacking.ASTM A34 |
| Dimensional Tolerance | ±0.05 mm | Critical for assembly and magnetic performance.ISO 2768-m |
| Insulation Coating Thickness | 1–3 μm | Affects stacking factor and insulation resistance.IEC 60404-1 |
| Burr Height | ≤0.03 mm | High burrs cause interlaminar shorts and core losses.ISO 13715 |
| Flatness | ≤0.1 mm/m | Ensures uniform stacking and magnetic performance.ISO 1101 |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
Commonly used trade names and technical identifiers for Electrical Steel Lamination Core.
| pressure: | Atmospheric to 10 bar (mechanical clamping dependent) |
| other spec: | Max magnetic flux density: 1.8-2.0 Tesla (material dependent), Core loss: 1.0-5.0 W/kg at 1.5T/50Hz |
| temperature: | -40°C to 200°C (operating), up to 400°C for short-term thermal events |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.
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A practical evidence checklist for RFQ preparation and supplier evaluation.
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Laminating electrical steel with thin insulating coatings reduces eddy current losses. The insulation between layers prevents large circulating currents, improving efficiency in electromagnetic devices.
Core loss at 1.5T and 50Hz typically ranges from 2.0 to 4.5 W/kg, but this depends on the steel grade and lamination thickness. Always verify with the manufacturer for your specific application.
Stacking factor is the ratio of solid steel volume to total core volume, typically 0.95–0.97. It is measured according to IEC 60404-13 and affects magnetic performance.
Common standards include IEC 60404-2 for core loss, IEC 60404-13 for stacking factor, and IEC 60404-1 for insulation resistance. Confirm compliance with the supplier.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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