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ASTM A726 Non-Oriented Silicon Steel Coil | Low Core Loss & Superior Magnetic Properties for Electrical Applications
| Item | Description |
| Product Name | ASTM A726 Silicon Steel Coil |
| Steel Type | Non-Oriented Electrical Steel (NOES) |
| Manufacturing Process | Cold-Rolled |
| Standard | ASTM A726 |
| Application Frequency | 50 / 60 Hz |
| Typical Applications | Motors, Generators, EV Drive Motors, Appliances |
| Element | Typical Composition (%) | Notes |
| Carbon (C) | ≤ 0.005 | Ensures low core loss |
| Silicon (Si) | 2.8 – 3.5 | Improves magnetic permeability, reduces losses |
| Manganese (Mn) | ≤ 0.30 | Enhances strength and prevents brittleness |
| Phosphorus (P) | ≤ 0.03 | Controls brittleness, improves magnetic properties |
| Sulfur (S) | ≤ 0.03 | Reduces impurities, prevents processing defects |
| Aluminum (Al) | 0.03 – 0.10 | Deoxidizes steel, improves uniformity |
| Iron (Fe) | Balance (~95–97%) | Base element of the steel |
Notes:
This composition represents typical values according to ASTM A726 for Non-Oriented (NO) Silicon Steel Coils.
The chemical composition ensures low core loss, high magnetic permeability, and excellent performance for transformers, generators, and motors.
| Property | Typical Value | Unit | Notes |
| Density | 7.65 | g/cm³ | Standard steel density |
| Thickness | 0.35 – 0.65 | mm | Typical coil range |
| Width | ≤ 1250 | mm | Custom widths possible |
| Core Loss (at 1.5 T, 60 Hz) | 1.5 – 2.2 | W/kg | Low core loss ensures energy efficiency |
| Magnetic Flux Density (B₈₀₀, H = 800 A/m) | 1.85 – 2.0 | T | High magnetic saturation |
| Coercive Force (Hc) | ≤ 10 | A/m | Low coercivity for efficient performance |
| Resistivity | 47 – 48 | µΩ·cm | Standard for electrical steel |
| Annealing | Fully annealed | – | Stress-relieved for optimal magnetic properties |
| Thickness (mm) | Typical Application |
| 0.35 | High-efficiency industrial motors |
| 0.5 | General industrial motors |
| 0.65 | Standard motors & generators |
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Power Transformers: Used for power distribution and power transformer cores; features extremely low iron losses and high magnetic flux density in the rolling direction. Steel Plate Magnets: Excellent magnetic properties and low energy loss. Industrial Transformers: Medium to large industrial transformers.
Series Reactors/Chokes: Ideal for continuously operating laminated cores in inductors and reactors requiring magnetic stability and low iron losses.
Renewable Energy Transformers: Cores for wind turbines, solar inverters, and various other renewable energy solutions, enabling stable operation and good energy efficiency.
Power Distribution Equipment: Its high lamination factor, excellent magnetic stability, and low losses also have a very positive impact on switchgear, voltage regulators, and industrial control transformer products.
1) Branch Office - Spanish-speaking support, customs clearance assistance, etc.
2) Over 5,000 tons of stock in stock, with a wide variety of sizes
3) Inspected by authoritative organizations such as CCIC, SGS, BV, and TUV, with standard seaworthy packaging
Packaging Characteristics
Roll Protection: The inner core of the roll material is made of steel or paper tubing, with corner guards or angle irons added to the edges; the surface is covered with moisture-proof paper or PE film, and rust-preventive oil can be applied as needed.
Securation Method: High-strength steel strapping is used for binding; wooden pallets or trays can be used if necessary.
Bundling (Optional): Thin rolls can be bundled into multiple rolls, separated by separator paper to prevent scratches, and covered with a plastic film for protection.
Transportation Methods
Sea Freight: Use 20-foot/40-foot containers, securely secured with wooden wedges.
Rail Transport: Flatbed truck or rail transport, secured with chains or brackets.
Handling and Storage
Use coil hooks, lifting devices, or C-frames to prevent dragging.
Roll materials should be stored upright to prevent deformation and rust.
Store in a dry, well-ventilated place, and do not place them too high.
Stable cooperation with shipping companies such as MSK, MSC, COSCO efficiently logistics service chain, logistics service chain are we to your satisfaction.
We follow the standards of quality management system ISO9001 in all procedure, and have strict control from packaging material purchase to transport vehicle scheduling.
1. What is non-oriented electrical steel coil?
Non-oriented electrical steel coil is a type of silicon steel with good magnetic permeability and low iron loss. It conducts magnetically uniformly in all directions and is widely used in electrical equipment such as transformers, motors, and generators.
2. What are the common thicknesses and widths?
Thickness: Typically 0.27 mm, 0.30 mm, 0.35 mm, etc. (customization available upon request)
Width: 600 mm ~ 1250 mm (customization available)
3. What are the surface treatment options?
Insulating varnish treatment (surface coating): Used to reduce eddy current losses.
Rust-preventing oil coating: Prevents oxidation during transportation and storage.
VCI protective paper or PE film packaging: Moisture-proof and corrosion-proof.
4. What are the packaging methods?
The inner core of each coil is made of steel or paper tubing.
The rolled edges are secured with corner protectors and steel strips.
The outer layer is wrapped with moisture-proof paper or plastic film. Small coils can be bundled into sets.
5. Is customization possible?
Yes, thickness, width, coil weight, surface treatment, and packaging can be customized according to customer requirements.
Contact Details
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