Copper Nickel 70/30

Copper Nickel 70/30 is a cupronickel alloy that offers slightly better strength than 90/10. The added strength is due to further additions of iron and manganese during the alloying process, resulting in a more suitable product for demanding applications. The alloying process also increases the erosion and corrosion resistance of the material. The overall corrosion resistance of 70/30 shows a marked improvement, particularly in high-velocity or polluted waters. Offering a combination of excellent corrosion and pitting resistance in marine environments, the alloy is commonly used in the petrochemical, oil and gas industry, and marine applications.

Stock Availability

Smiths Advanced Metals stocks Copper Nickel 70/30 bars in the annealed condition, with bars available in a variety of sizes.

Commercial Applications

Copper-nickel 70/30 finds use in boiler parts, heat exchangers, saltwater flanges, pump components and evaporator tubes.