About

Cupro Nickel 90/10 (UNS C70600, DIN 2.0872) is a copper-nickel alloy containing 90% copper and 10% nickel, with small additions of iron and manganese for enhanced strength and corrosion resistance. It is widely used in marine, chemical, and power industries due to its excellent resistance to seawater corrosion, biofouling, and stress corrosion cracking.

Key Specifications of Cupro Nickel 90/10 Bolts

• Composition: 90% Copper, 10% Nickel, plus iron & manganese.
• Density: ~8.9 g/cm.
• Tensile Strength: ~275350 MPa.
• Yield Strength: ~105150 MPa.
• Hardness: ~80120 HB.
• Melting Point: ~11001130C.
• Standards: ASTM B151, ASTM F468, ASME SB151/SB152, DIN, ISO, BS.
• Size Range: Bolts typically available from M4 to M100, lengths up to 5 meters.

Common Uses

• Marine Industry: Seawater piping systems, shipbuilding, offshore platforms, condenser tubes.
• Power Generation: Heat exchangers, cooling systems, and desalination plants.
• Chemical Processing: Pumps, valves, and fasteners exposed to corrosive environments.
• Oil & Gas: Subsea equipment and refinery systems requiring resistance to chloride stress corrosion.
• Architectural Applications: Decorative elements due to its silver-white coloration.

Comparison: Cupro Nickel 90/10 vs Stainless Steel 316 Bolts

Why Choose Cupro Nickel 90/10 Bolts?

• Superior seawater corrosion resistance ideal for marine and desalination applications.
• High resistance to biofouling prevents marine organism buildup.
• Durable under thermal cycling retains mechanical properties from cryogenic (-300F) to elevated temperatures.
• Long service life minimal maintenance in aggressive environments.
• Excellent fabrication properties can be machined, bent, stamped, and welded easily.