ASTM A811 Low Carbon Magnetic Iron Billets
Manufactured by Xinye Taiming – Engineered for High Flux Density & Minimal Core Loss
Core Advantages
Ultra-low carbon billets compliant with ASTM A811 specifications, optimized for energy-efficient electromagnetic applications.
| Key Attribute | ASTM A811 Requirement | Xinye Enhancement |
|---|---|---|
| Carbon Content | ≤0.025% | 0.006-0.012% |
| Magnetic Flux Density | 1.8T Minimum | 2.05T Guaranteed |
| Surface Quality | ≤3.0µm Ra | ≤0.8µm Ra (Electropolished) |
| Frequency Response | 50Hz-400Hz | DC-2kHz Linear |
Technical Specifications
| Parameter | ASTM A811 Standard | Xinye Performance | Test Method |
|---|---|---|---|
| Iron Purity | ≥99.80% | 99.88-99.92% | ASTM E135 |
| Coercivity (Hc) | ≤100 A/m | ≤55 A/m | ASTM A341 |
| Resistivity | 12.5 µΩ·cm | 10.8 µΩ·cm | IEC 60468 |
| Lamination Factor | ≥93% | 96.5% | JIS C 2550 |
| Thickness Tolerance | ±0.1mm | ±0.03mm | ISO 9444 |
Chemical Composition
| Element | ASTM A811 Limit | Xinye Typical | Process Control Technology |
|---|---|---|---|
| Fe | Balance | 99.90% | Triple Vacuum Degassing |
| C | ≤0.025% | 0.009% | Laser-Assisted Decarburization |
| Si | ≤0.10% | 0.025% | Slag-Free Refining |
| Mn | ≤0.15% | 0.035% | Electromagnetic Stirring |
| P | ≤0.020% | 0.007% | Electroslag Remelting |
| S | ≤0.015% | 0.002% | Calcium-Injection Treatment |
Trace Elements (Cu+Cr+Ni): ≤0.030% Combined
Performance Comparison
| Property | Industrial Average | Xinye A811 Billet | Improvement |
|---|---|---|---|
| Core Loss (1.0T/60Hz) | 3.2 W/kg | 1.8 W/kg | 43.7% ↓ |
| Permeability (µ@0.002T) | 2,500 | 3,800 | 52% ↑ |
| DC Bias Stability | 75% @50 Oe | 89% @50 Oe | +18.6% |
| Temperature Coefficient (-50°C~200°C) | 0.12%/°C | 0.04%/°C | 66.7% ↓ |
Industry Applications
| Sector | Critical Component | Xinye Benefit |
|---|---|---|
| Power Electronics | High-Frequency Transformers | 40kHz Operation Stable |
| Automotive | EV Onboard Chargers | 0.005mm Curvature Tolerance |
| Industrial | Magnetic Couplings | 98% Torque Efficiency |
| Renewable Energy | Wind Turbine Generators | -40°C Cold Start Certified |
Certifications & Testing
| Standard | Scope | Certification Code |
|---|---|---|
| ASTM A811 | Low Carbon Magnetic Iron | XYT-A811-2024 |
| ISO 17025 | Material Testing Lab | CNAS-L-7890 |
| RoHS 3 | Hazardous Substance Free | EP-A811-EU24 |
| AS9100D | Aerospace Grade | QM-AS9100-2024 |
Production Process
Raw Material Selection
99.99% electrolytic iron + zero-impurity recycled scrap
Vacuum Induction Melting
10⁻⁴ mBar vacuum, 1,600°C melt point
Continuous Casting
Electromagnetic confinement casting (ECC)
Thermal Treatment
Hydrogen atmosphere annealing @850°C ×8hr
Quality Verification
3D magnetic domain mapping + AI defect detection
Competitive Edge
| Technical Superiority | Quality Assurance | Eco-Innovation |
|---|---|---|
| 0.005% C control precision | 100% automated eddy current test | 100% green energy powered |
| Patent-pending grain alignment (ZL202410001) | Blockchain-based traceability | Zero acid pickling process |
| AI-driven magnetic aging prediction | 24/7 remote production monitoring | Carbon credits certified |
FAQ
Q: Minimum order quantity for custom sizes?
A: 3 metric tons with 25-day lead time.
Q: Corrosion resistance in humid environments?
A: 1,200hr salt spray test passed (ASTM B117).
Q: High-frequency performance data?
A: 0.5% THD @10kHz (full dataset available on request).