1070 Aluminum Coil
1070 Aluminum Alloy: High-Purity Conductive Material for Electrical Applications
Premium-Grade Pure Aluminum with 99.7% Purity
1070 aluminum (UNS A91070) represents the highest purity commercial-grade aluminum, containing 99.7% aluminum content. This alloy delivers exceptional electrical conductivity (64% IACS) and thermal performance (230 W/m·K), making it 15% more conductive than standard 1050 alloy.
Key Advantages:
- Conductivity: 64% IACS (International Annealed Copper Standard)
- Formability: 30% elongation in annealed condition (ASTM B209)
- Corrosion Resistance: 0.015 mm/year corrosion rate in marine environments
- Cost Efficiency: 20% lower material cost than 3003 alloy
Technical Specifications
1. Chemical Composition (ASTM B209 Standard)
| Element | Si | Fe | Cu | Mn | Al |
|---|---|---|---|---|---|
| % Range | ≤0.20 | ≤0.25 | ≤0.04 | ≤0.03 | ≥99.7 |
Trace elements: Zn≤0.04%, Ti≤0.03%, Others≤0.05% total
2. Mechanical Properties
| Property | Tensile | Yield | Elongation | Hardness |
|---|---|---|---|---|
| Annealed | 75-110 MPa | ≥35 MPa | ≥30% | 32 HB |
| H18 Temp | 140-180 MPa | ≥125 MPa | ≥4.5% | 45 HB |
Test standards: ASTM E8 (tensile), ISO 6506-1 (hardness)
3. Physical Characteristics
| Parameter | Density | Melting Point | CTE | Resistivity |
|---|---|---|---|---|
| Value | 2.71 g/cm³ | 640-655°C | 23.6×10⁻⁶/°C | 0.0265 μΩ·m |
Custom Manufacturing Options
Available Forms:
- Thickness: 0.01-6mm foil (±0.005mm tolerance)
- Width: 20-1500mm (slitting available)
- Length: Custom coil lengths up to 20,000mm
Surface Treatments:
- Mill finish (standard Ra 0.4-1.2μm)
- Annealed finish (O temper)
- Capacitor-grade polishing (Ra ≤0.2μm)
Processing Services:
- Precision blanking (±0.02mm tolerance)
- Deep drawing (LDR 2.1 achievable)
- Ultrasonic welding (for foil applications)
Industrial Applications
Electrical Sector:
- Capacitor foils (0.006-0.02mm thickness)
- Busbar components (1-6mm strips)
- Transformer windings
Packaging Industry:
- Pharmaceutical foil packaging
- Food container lids
- Flexible packaging laminates
Specialty Applications:
- Decorative anodized finishes
- Thermal management substrates
- Cryogenic equipment components
Quality Assurance
- 100% eddy current testing (EN 13958)
- Spectrometer verification (PDA test)
- Third-party inspection available
Certifications: ISO 9001, RoHS, REACH
Packaging: VCI paper interleaved coils
Lead Time: 7-10 days for standard sizes
Comparative Advantages
| Property | 1070 | 1050 | 1100 |
|---|---|---|---|
| Al Content | 99.7% | 99.5% | 99.0% |
| Conductivity | 64% | 62% | 59% |
| Tensile (MPa) | 75-110 | 85-120 | 90-130 |
| Cost Index | 1.05 | 1.0 | 0.95 |
Why Choose 1070 Aluminum?
- Superior Conductivity: Ideal for electrical components
- Excellent Formability: Perfect for deep drawing applications
- Cost-Effective: Better performance than 1060 at similar cost
- Reliable Supply: Consistent quality with mill certifications
For capacitor-grade material requests, specify surface roughness requirements (Ra 0.1-0.5μm available).
Packing And Delivery
