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Product Features
Ultra-High Purity: Copper content ≥ 99.95%, with minimal impurities and oxygen content ≤ 0.002%.
Excellent Conductivity and Thermal Conductivity: Conductivity ≥ 101% IACS, Thermal Conductivity ≥ 397 W/(m·K).
No Hydrogen Embrittlement Risk: Low oxygen content prevents embrittlement in high-temperature reducing environments.
Superior Workability: Excellent ductility, suitable for stamping, drawing, and welding processes.
Common Product Forms and Dimensions
| Product Form | Dimension Range | Surface Condition |
| Strip | Thickness: 5-50mm; Width: 20-300mm; Length: ≤6m | Smooth/1/2Hard |
| Plate | Thickness: 0.5-50mm; Width: 100-2000mm | Rolled/Polished |
| Tube | Outer Diameter: 3-200mm; Wall Thickness: 0.5-15mm | Y/M (Annealed) |
| Wire | Diameter: 0.1-10mm; Coil Weight: 50-500kg | Bright/Tin-Plated |
Chemical Composition
| Element | Cu | O | P | S | Total Impurities |
| Content | ≥99.95% | ≤0.002% | ≤0.001% | ≤0.002% | ≤0.05% |
Physical Properties
| Property | Value | Test Standard |
| Density | 8.96 g/cm³ | GB/T 3850 |
| Melting Point | 1083°C | GB/T 232 |
| Conductivity (20°C) | 101-103% IACS | GB/T 3048.2 |
| Thermal Conductivity (20°C) | 397-401 W/(m·K) | ASTM E1461 |
| Thermal Expansion Coefficient | 16.5×10⁻⁶/°C (20-100°C) | GB/T 4339 |
Mechanical Properties (Annealed State)
| Property | Value | Test Standard |
| Tensile Strength | 200-250 MPa | GB/T 228.1 |
| Yield Strength | 60-80 MPa | GB/T 228.1 |
| Elongation (δ) | ≥35% | GB/T 228.1 |
| Hardness (HV) | 40-60 | GB/T 4340.1 |
| Elastic Modulus | 110-130 GPa | GB/T 22315 |
Core Advantages
Purity Assurance: Ultra-low impurity content ensures stable electrochemical performance.
High-Temperature Stability: Suitable for vacuum or noble gas environments (e.g., semiconductor manufacturing).
Corrosion Resistance: Excellent oxidation resistance in dry, sulfur-free environments.
Processing Flexibility: Supports precision etching, laser cutting, and other complex processes.
Product Applications
| Industry | Typical Applications | Key Requirements |
| Electronics | Integrated circuit lead frames, high-frequency transformer windings | High conductivity, low signal loss |
| Energy Equipment | Solar cell conductors, nuclear power plant cooling tubes | Radiation resistance, long-term thermal stability |
| Automotive | EV cooling plates, high-voltage connectors | High thermal conductivity, vibration fatigue resistance |
| Aerospace | Rocket engine liners, thermal management systems | High-temperature oxidation resistance, lightweight design |
Processing Notes
Cold Working: Intermediate annealing (650-800°C under noble gases) is required if deformation exceeds 30%.
Welding: Preferably use TIG welding (argon purity ≥ 99.99%) to avoid porosity and oxidation.
Cutting: Recommend low-speed, high-feed cutting with sulfurized cutting oil to reduce tool wear.
Surface Treatment:
Short-term Anti-Oxidation: Apply Benzotriazole (BTA) corrosion inhibitor.
Long-term Protection: Nickel electro plating (thickness ≥ 5μm) or hot dip tinning.
GNEE's copper products include
| Product Category | Standard | Typical Alloy | Common Forms / Types | Size Range (Thickness/Diameter) | Size Range (Width) | Size Range (Length) | Temper / Hardness |
|---|---|---|---|---|---|---|---|
| Copper Tube/Pipe | ASTM B75, B88, B280 EN 1057 |
C10200 (OFE) C12200 (DHP) |
Seamless ACR (Air Conditioning & Refrigeration) Medical Gas Capillary Tube |
0.5 mm - 6.0 mm (Wall Thickness) 3 mm - 300 mm (Outer Diameter) |
- | Straight Lengths: 1m - 6m Coils: 15m - 50m |
Annealed (Soft) Half-Hard Hard Drawn |
| Copper Sheet & Plate | ASTM B152, B465 EN 1652 |
C11000 (ETP) C10200 (OFHC) C19400 |
Sheet (≤6mm) Plate (>6mm) Shim Stock |
0.2 mm - 50 mm (Sheet: 0.2mm - 6mm) (Plate: 6mm - 50mm) |
100 mm - 1500 mm | 500 mm - 3000 mm or Coils |
Soft (Annealed) Quarter-Hard Half-Hard Hard Spring |
| Copper Bar & Rod | ASTM B133, B187 B301, B441 |
C11000 (ETP) C36000 (Free-Cutting) C14500 (Tellurium) |
Square Bar Flat Bar Hexagonal Bar Round Rod (Coiled) |
3 mm - 200 mm (Diameter/Thickness) |
6 mm - 200 mm (For Flat Bar) |
Straight: 1m - 4m Coils: (upon request) |
Soft (Annealed) Half-Hard Hard As Extruded |
| Copper Wire | ASTM B1, B2, B3 B174, B189 |
C11000 (ETP) C10100 (OFHC) C14420 (CuAg) |
Bare Wire Tinned Wire Bunched/Stranded Wire Profile Wire |
0.05 mm - 12 mm (AWG 44 - AWG 3) |
- | Coils: 5kg - 500kg Spools, Drums |
Annealed (Soft) Hard Drawn Spring Temper |
| Copper Foil | ASTM B370, B101 IPC-4562 |
C11000 (ETP) C10200 (OFHC) |
Rolled Foil Electrodeposited (ED) Foil |
0.005 mm - 0.2 mm (5µm - 200µm) |
50 mm - 1300 mm | Coils: 100m - 3000m | As Rolled (Hard) Annealed (Soft) Double Annealed |
