Copper Alloys
Generic Name & Other Designation
Generic Class: Copper & Copper-Nickel Alloys
Popular Grades: C70600 (CuNi 90/10), C71500 (CuNi 70/30), C11000 (ETP Copper), C17200 (Beryllium Copper)
Product Overview
Our comprehensive range of Copper Alloys includes brass, bronze, pure copper, and high-performance copper-nickel (CuNi) formulations designed for extreme conductivity and marine durability. Copper-nickel grades (C70600 and C71500) provide outstanding resistance to seawater velocity erosion, stress corrosion, and biofouling.
Whether required for electrical busbars, offshore heat exchangers, or high-wear mechanical bushings, BELNADE’s copper alloys deliver long-term operational efficiency.
Key Highlights
✅ Superior Thermal & Electrical Transfer: Exceptional thermal conductivity for energy management systems.
✅ Natural Marine Antifouling: Copper-nickel matrix naturally prevents marine bio-growth and macro-fouling.
✅ Cryogenic Toughness: Retains high impact strength and ductility without embrittlement at sub-zero temperatures.
✅ Excellent Machinability: Readily formed, soldered, brazed, and machined into complex parts.
Key Technical Specifications Across Core Grades
1. Chemical Composition (wt%)
Grade | Copper (Cu) | Nickel (Ni) | Iron (Fe) | Beryllium (Be) | Lead (Pb) Max | Zinc (Zn) Max |
C70600 (CuNi 90/10) | Balance (~88.5%) | 9.0 – 11.0% | 1.0 – 1.8% | — | 0.05% | 1.0% |
C71500 (CuNi 70/30) | Balance (~69.0%) | 29.0 – 33.0% | 0.4 – 1.0% | — | 0.05% | 1.0% |
C11000 (ETP Copper) | ≥ 99.90% | — | — | — | — | — |
C17200 (Beryllium Cu) | Balance (~98.0%) | Co+Ni ≥ 0.20% | — | 1.80 – 2.00% | 0.02% | — |
(Note: Chemical limits strictly comply with ASTM B111 / B122 / B151 specifications.)
2. Physical & Mechanical Properties
Parameter / Property | C70600 (CuNi 90/10) | C71500 (CuNi 70/30) | C11000 (ETP Copper) | C17200 (Beryllium Cu) |
Density | 8.94 g/cm³ | 8.95 g/cm³ | 8.89 g/cm³ | 8.25 g/cm³ |
Electrical Conductivity | ~9% IACS | ~4.5% IACS | ≥ 100% IACS | 15% – 30% IACS |
Thermal Conductivity | 50 W/(m·K) | 29 W/(m·K) | 388 W/(m·K) | 105 W/(m·K) |
Tensile Strength (Rm) | ≥ 275 MPa | ≥ 360 MPa | ≥ 220 MPa | 410 – 1400 MPa |
Yield Strength (0.2%, Rp0.2) | ≥ 105 MPa | ≥ 125 MPa | ≥ 69 MPa | 200 – 1200 MPa |
Elongation (A5) | ≥ 30% | ≥ 30% | ≥ 25% | ≥ 3% (Age Hardened) |
Available Forms
Pipes & Tubes: Seamless condenser tubes, seawater intake lines, refrigeration tubing.
Bars & Plates: Heavy busbars, conductive plates, forged copper rings.
Fittings & Flanges: Threaded couplings, copper-nickel flanges, brazing sockets.
Typical Application Scenarios
Marine & Offshore: Shipboard seawater cooling systems, offshore platform piping, desalination tubes.
Electrical Engineering: Power distribution busbars, transformer connectors, switchgear components.
HVAC & Heat Transfer: Commercial chillers, shell-and-tube heat exchangers, radiator cores.
Quality Assurance & Testing
Eddy current and hydrostatic testing for 100% of tubular products.
Electrical conductivity testing (IACS) and hardness testing per ASTM E18.
Full traceability with EN 10204 3.1 certification provided with every delivery.
Supplier Information (BELNADE)
As a trusted international supplier of copper alloys, BELNADE stocks an extensive inventory of tubes, bars, and sheets. BELNADE offers custom length cutting, specialized coil packaging, and global door-to-door delivery.
Get in Touch with BELNADE for Quotes and Technical Inquiries
📧 Email: [email protected]
🌐 Website: www.belnade-material.com
💬 Mobile/ WhatsApp: +86 183 6997 5713