CuNi 70/30 Copper Nickel Rod Antifouling Seawater Corrosion Resistant C71500
CuNi 70/30 Copper Nickel Rod Antifouling Seawater Corrosion Resistant C71500
1.Product Description
Copper nickel bar is a solid rod product based on copper with nickel as the primary alloy. Typical grades include CuNi10 (10% Ni), CuNi14 (14% Ni), C70600 (90/10 cupronickel), and C71500 (70/30 cupronickel). Manufactured via vacuum melting, hot extrusion, and precision cold drawing, the bars offer tight dimensional tolerances (down to ±0.05 mm in diameter) and a smooth, oxide-free surface. Compliant with ASTM B151, EN 12163, GB/T 4423, and other standards.
2.Product Applications
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Marine engineering:Seawater cooling pipelines, pump and valve bushings, heat exchanger tube sheets, propeller shaft sleeves.
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Chemical equipment:Corrosion-resistant flanges, fasteners, agitator shafts for reactors, evaporator parts.
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Electrical & power:Resistance elements for low-voltage devices, thermocouple protection tubes.
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Precision manufacturing:Automotive hydraulic brake tubes, precision shafts for instruments, sensor housings.
3.Product Advantages
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Seawater corrosion and erosion resistance:Forms a dense passive film; corrosion rate in flowing seawater < 0.025 mm/year, with excellent cavitation resistance.
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High strength and toughness:Tensile strength ≥ 480 MPa (C71500), elongation ≥ 30%, combining rigidity with impact resistance.
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Excellent workability:Good hot/cold formability; easy to turn, drill, tap; stable weldability (TIG, resistance welding).
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Stable resistivity and thermal conductivity:Resistivity ~0.5 μΩ·m, thermal conductivity 30–75 W/(m·K), suitable for combined heating and cooling applications.
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Low-temperature toughness:Maintains good impact toughness even at -200°C, suitable for LNG and deep-sea equipment.
4.Product Specifications
| Parameter | CuNi10 | CuNi14 | CuNi19 | C70600 (90/10) | C71500 (70/30) |
| Chemical Composition | |||||
| Copper (Cu) Content | ~90% | Balance | ~81% | ≥55% | ≥65% |
| Nickel (Ni) Content | ~10% | ~14% | ~19% | ≥29% | 29-33% |
| Iron (Fe) Content | - | Trace | - | ≤0.3% | 0.4-1.0% |
| Manganese (Mn) Content | ≤0.5% | Trace | - | ≤0.3% | ≤1.0% |
| Physical Properties | |||||
| Density (g/cm³) | 8.87 | 8.8-8.95 | 8.9 | 8.9 | 8.94 |
| Melting Point (℃) | 1100-1200 | - | - | ~1220 | ~1240 |
| Electrical Conductivity (%IACS) | - | - | 20-22 | ~30 | ~10 |
| Thermal Conductivity (W/m·K) | 75 | ~75 | 38 | - | 29.1 |
| Mechanical Properties | |||||
| Tensile Strength (MPa) | ≥450 | 430-520 | 380-480 | ≥510 | 380-620 |
| Yield Strength (MPa) | ≥275 | 170-260 | 200-250 | ≥260 | - |
| Elongation (%) | - | 20-40 | 35-40 | ≥30 | ~30 |
Note: The above parameters are typical values; actual values may vary depending on grade, processing condition, and applicable standards. Diameter range is typically 6mm to 300mm, with length customizable upon request.
FAQ
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2.How long is your delivery time? Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
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