Copper Nickel 70/30 Nuts

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Copper Nickel 70/30 Nuts Manufacturer and Supplier in Canberra, Australia

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At Hazlewood Fasteners in Canberra, Australia, our Copper Nickel 70/30 nuts are engineered for demanding marine, offshore, and industrial fluid-handling environments. Designed for exceptional corrosion resistance in seawater, brine, and bio-fouling conditions, these nuts ensure secure mechanical integrity and long-term stability in harsh, chloride-rich atmospheres. Ideal for shipbuilding, desalination plants, heat exchangers, and coastal infrastructure, Copper Nickel 70/30 fasteners deliver strength, conductivity, and metallurgical durability. For installations where saltwater performance, anti-corrosive assurance, and metallurgical compatibility are critical, our 70/30 Cu-Ni nuts provide enduring fastening confidence and reliable joint security.

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Copper Nickel 70/30 nuts are manufactured using an alloy blend of approximately 70% copper and 30% nickel with controlled additions of iron and manganese for enhanced mechanical integrity and corrosion stability. This composition provides excellent resistance to pitting, stress-corrosion cracking, and erosion in turbulent seawater systems. Offering strong tensile performance, superior anti-galling characteristics, and natural anti-microbial resistance, 70/30 Cu-Ni nuts maintain thread integrity and secure clamping force under high thermal, saline, and pressure conditions.

Copper Nickel 70/30 Nuts Chemical Composition

Copper Nickel	Ni	Pb	Cu	Fe	Mn	Zn
Copper Nickel	9-11 max	0.05 max	88.6 min	1.8 max	1.0 max	1 max

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Copper Nickel 70/30 Nuts Mechanical Properties

Density	Elongation	Yield Strength (0.2%Offset)	Melting Point	Tensile Strength
8.1 g/cm3	30 %	Psi – 35,000, MPa – 241	1443 °C (2430 °F)	Psi -80,000, MPa -551

Copper Nickel 70/30 Nuts Specification

Material	Specification	Standards	Size
Cupro Nickel	ASTM	ASTM B151, B152	M10 to M100

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To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.

Copper Nickel 70/30 nuts are widely used in marine engineering, shipbuilding, offshore platforms, heat exchanger systems, desalination plants, coastal power generation, seawater piping networks, petrochemical cooling systems, and naval applications. Their metallurgical compatibility with copper-nickel pipes, flanges, and fittings makes them essential for bolting assemblies in fluid-transfer units, condenser systems, ballast systems, and underwater structures. When structural security must withstand salt spray, marine growth, high velocity seawater, and thermal cycling, 70/30 Cu-Ni nuts provide long-lasting fastening reliability and superior corrosion assurance.

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Types of Copper Nickel 70/30 Nuts

Our Copper Nickel 70/30 Nuts at Hazlewood Fasteners are packed in a manner that they reach the clients in the best condition possible. Every nut is covered and placed in hard-wearing, moisture-proof packets to avoid spoilage and harm. Proper labeling enhances identification and management of the items. The nuts are packed carefully to ensure that they retain their high quality and are ready for consumption, thus showcasing our company’s dedication to providing high-quality products and excellent customer care.