TOBO INDUSTRIAL (SHANGHAI) CO., LTD
| Supply Ability | 10 Ton/Month |
| Head Code | Round |
| Tensile Strength | 490 N/mm2 (min) |
| Materialcomposition | Copper-Nickel Alloy |
| Delivery Time | 15-30 Workdays |
| Composition | 90% copper, 10% nickel |
| Electrical Conductivity | 10% IACS |
| Coppercontent | 70% - 90% |
| Payment Terms | T/T, Western Union |
| Elongation | 15% |
| Finish | Polished |
| Specification | UNS C70600 (Cu-Ni 90/10) |
| Nickelcontent | 10% - 30% |
| Packing | Standard Seaworthy Package |
| Size | 1/2 |
| Surfacefinish | Polished / Mill Finish |
| Mechanicalproperties | Good tensile strength and ductility |
| Packaging Details | Standard Shipping Package |
| Dia | 3mm-800mm/custom |
| Product Name | CuNi 70/30 Copper Nickel Bar Non-Magnetic Weldable ASTM B151 C71500 |
| Model Number | Copper Nickel Bar |
| Certification | ISO/TUV/SGS |
| Place of Origin | Shanghai,China |
| Brand Name | TOBO |
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Product Specification
| Supply Ability | 10 Ton/Month | Head Code | Round |
| Tensile Strength | 490 N/mm2 (min) | Materialcomposition | Copper-Nickel Alloy |
| Delivery Time | 15-30 Workdays | Composition | 90% copper, 10% nickel |
| Electrical Conductivity | 10% IACS | Coppercontent | 70% - 90% |
| Payment Terms | T/T, Western Union | Elongation | 15% |
| Finish | Polished | Specification | UNS C70600 (Cu-Ni 90/10) |
| Nickelcontent | 10% - 30% | Packing | Standard Seaworthy Package |
| Size | 1/2 | Surfacefinish | Polished / Mill Finish |
| Mechanicalproperties | Good tensile strength and ductility | Packaging Details | Standard Shipping Package |
| Dia | 3mm-800mm/custom | Product Name | CuNi 70/30 Copper Nickel Bar Non-Magnetic Weldable ASTM B151 C71500 |
| Model Number | Copper Nickel Bar | Certification | ISO/TUV/SGS |
| Place of Origin | Shanghai,China | Brand Name | TOBO |
| High Light | CuNi 70/30 copper nickel bar ，non-magnetic copper nickel bar ，weldable ASTM B151 C71500 bar | ||
CuNi 70/30 Copper Nickel Bar Non-Magnetic Weldable ASTM B151 C71500
1.Product Description
Copper nickel bar is a solid rod material based on copper with nickel as the primary alloying element. Classified by nickel content, common grades include CuNi8 (~8% Ni), CuNi10 (~10% Ni), CuNi14 (~14% Ni), CuNi19 (~19% Ni), CuNi23 (~23% Ni), CuNi30 (~30% Ni), CuNi44 (~44% Ni), as well as ASTM grades C70600 (90/10 cupronickel) and C71500 (70/30 cupronickel). Manufactured from high-purity electrolytic copper and electrolytic nickel through vacuum melting, hot forging, multi-pass cold drawing, precision straightening and surface polishing, the bars offer tight dimensional tolerances and a smooth, defect-free surface. Applicable standards include ASTM B151/B151M, EN 12163, GB/T 4423, and ISO 9725.
2.Product Applications
Copper nickel bars are widely used across various industries due to their excellent comprehensive performance:
| Application Field | Typical Components |
| Marine & Offshore Engineering | Seawater cooling pipelines, valve stems, heat exchanger tube sheets, propeller shaft sleeves, submarine cable sheaths, offshore platform fasteners, marine pump shafts |
| Petrochemical Industry | Acid-resistant pump shafts, reactor agitators, evaporator heating tubes, tank inner lining strips, pipe flanges, corrosive media transfer fittings |
| Electric Power & Electrical | Resistance elements for high-voltage circuit breakers, shunts, transformer winding cores, thermocouple protection tubes, generator brush holders |
| Automotive & Precision Machinery | Hydraulic brake hard tubes, pneumatic connectors, precision gear blanks, plain bearing bushes, sensor housings, precision shafts for instruments |
| Cryogenic & LNG | LNG transfer line fittings, cryogenic valve components, air separation unit pressure conduits |
3.Product Advantages
Excellent corrosion resistance:Performs exceptionally well in seawater, chlorides, dilute sulfuric acid, alkalis and other corrosive media, with extremely low pitting and crevice corrosion tendency, and outstanding resistance to stress corrosion cracking.
High strength-toughness combination:Tensile strength ranges 380–620 MPa, elongation generally 25%–40%, combining high strength with excellent plasticity, good impact and fatigue resistance.
Erosion and cavitation resistance:Low corrosion rate in high-velocity seawater (≥5 m/s) and sand-containing media, with outstanding cavitation peeling resistance, suitable for pumps, valves, and pipelines under dynamic loading.
Excellent workability:Smooth machinability for turning, milling, drilling and tapping; good adaptability for hot bending and welding (TIG, resistance welding, brazing) without special process requirements.
Wide temperature stability:From -250°C cryogenic to +350°C high temperature, mechanical properties change gradually with no ductile-to-brittle transition, and good high-temperature oxidation resistance.
Long service life:Service life of 25–30 years in marine and chemical environments, with extremely low life-cycle maintenance costs.
4.Product Specifications
| Parameter | CuNi8 | CuNi10 | CuNi14 | CuNi19 | CuNi23 | CuNi30 | CuNi44 | C70600 | C71500 |
| Chemical Composition | |||||||||
| Nickel Content Ni (%) | ~8 | ~10 | ~14 | ~19 | ~23 | ~30 | ~44 | ≥29 | 29~33 |
| Copper Content Cu (%) | Balance | Balance | Balance | Balance | Balance | Balance | Balance | ≥55 | ≥65 |
| Iron Content Fe (%) ≤ | — | — | — | — | — | — | — | 0.3 | 1.0 |
| Manganese Content Mn (%) ≤ | 0.5 | 0.5 | — | — | — | — | — | 0.3 | 1.0 |
| Physical Properties | |||||||||
| Density (g/cm³) | 8.85 | 8.87 | 8.90 | 8.90 | 8.91 | 8.93 | 8.95 | 8.90 | 8.94 |
| Melting Point (°C) | 1150~1220 | 1100~1200 | 1100~1180 | — | — | 1080~1150 | — | ~1220 | ~1240 |
| Conductivity (%IACS) | — | — | — | 20~22 | — | — | — | ~30 | ~10 |
| Thermal Conductivity (W/m·K) | 80 | 75 | 70 | 38 | — | 35 | — | — | 29.1 |
| Resistivity (μΩ·m) | 0.22 | 0.24 | 0.28 | 0.33 | — | 0.45 | — | 0.32 | 0.50 |
| Elastic Modulus (GPa) | — | — | — | — | — | — | — | 140 | 150 |
| Coefficient of Expansion (×10⁻⁶/°C) | — | — | — | — | — | — | — | 16.2 | 15.0 |
| Mechanical Properties | |||||||||
| Tensile Strength (MPa) | ≥420 | ≥450 | 430~520 | 380~480 | — | ≥460 | — | ≥510 | 380~620 |
| Yield Strength (MPa) | ≥250 | ≥275 | 170~260 | 200~250 | — | ≥300 | — | ≥260 | ≥180 |
| Elongation (%) | ≥25 | 20~35 | 20~40 | 35~40 | — | ≥25 | — | ≥30 | ~30 |
| Service Temperature Range (°C) | -200~+300 | -200~+300 | -200~+320 | -200~+330 | — | -200~+350 | — | -200~+300 | -200~+350 |
FAQ
1. Are you trading company or manufacturer ? We are manufacturer ,You can see the certification.
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.
3. Do you provide samples ? is it free or extra ? Yes, we could offer the sample for free charge but need pay the cost of freight.
4. What is your terms of payment ? Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
TOBO INDUSTRIAL (SHANGHAI) Co., Ltd. is a professional supplier of pipeline products, located in Shanghai, with convenient transportation and beautiful environment. Dedicated to strict quality control and customer service. Our experienced staff can readily discuss your requirements to ensu... TOBO INDUSTRIAL (SHANGHAI) Co., Ltd. is a professional supplier of pipeline products, located in Shanghai, with convenient transportation and beautiful environment. Dedicated to strict quality control and customer service. Our experienced staff can readily discuss your requirements to ensu...
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