CUNI 70:30 Fittings & Valve

Copper-Nickel 70/30 – UNS C71500 , Tube Fittings , Pipe Fittings , Needle Valves , Ball Valves and Manifold Valves

CuNi 70/30, also known as Cupronickel, is a high-performance alloy composed of 70% copper, 30% nickel, with additions of iron and manganese. It is engineered for maximum strength and superior resistance to saltwater corrosion, erosion, and biofouling. Made from UNS C71500 Copper-Nickel 70/30 alloy with iron and manganese additions, these fittings and valves offer exceptional strength, erosion resistance, and protection against biofouling. With a melting point of 1171°C and tensile strength of 372-517 MPa, CuNi 70/30 outperforms 90/10 CuNi in high-velocity and polluted seawater systems. Our CuNi 70/30 Fittings and Valves are engineered to perform in the toughest seawater environments.

Key Properties

• Composition: 70% Cu, 30% Ni, with Fe & Mn
• Density: 8.94 g/cm³
• Melting Point: ∼1171°C / 2140°F
• Tensile Strength: 372 – 517 MPa. Higher than 90/10 CuNi

Primary Applications

• Seawater piping systems and marine fittings
• Desalination plants and power generation units
• Condensers and heat exchangers
• Offshore structures and high-velocity,
• polluted marine service