Columbia Metals stocks copper nickel alloys – generally known as cupronickels – and high copper alloys, which are those that usually contain more than 95% copper with only a small addition of elements such as nickel, silicon, chromium and beryllium.
Cupronickels are widely recognised for their excellent resistance to stress corrosion cracking and corrosion fatigue. The addition of nickel to copper improves the material’s overall strength, durability and also its resistance to corrosion, erosion and cavitation in all types of water. The most common cupronickel alloys are those containing either 10 or 30% nickel, but other alloying additions such as manganese and iron are made to improve both strength and corrosion resistance.
Our high copper alloys include silicon bronze, copper nickel silicon and beryllium copper. These alloy grades are among the most important and widely used copper alloys due to the impressive range of attributes that can be attained. Columbia Metals’ stock of copper nickel silicon features two other proprietary alloys, Colsibro and Trojan, both offering high strength and wear resistance. Other alloys such as a silicon bronze have been developed to offer excellent hot and cold formability combined with corrosion resistance, strength and toughness.
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