CW354H Copper Nickel

The alloy is an equivalent specified material tocopper-nickel 70/30, which, as the name suggests, contains 70% copper and 30% nickel. Iron and manganese are added in minute quantities in the alloying mix, improving strength and corrosion resistance.

Material Characteristics

CW354H is renowned for improved performance compared to 90/10 copper-nickel alloy, particularly in harsher application environments such as high-velocity water. Strength is also marginally superior while promoting good toughness. Like all copper-nickel alloys, CW354H offers excellent corrosion resistance with additional attractive characteristics, including good pitting and bio-fouling resistance (although 90/10 copper nickel offers superior resistance). The product also has a moderately high melting point and low electrical conductivity, providing excellent mechanical properties at low temperatures. The alloy is easy to weld, machine and form by conventional methods. The chemical Euro Norm designation for this material is CuNi30-Mn1Fe.

Commercial Applications

CW354H is ideal for commercial applications in the marine sector, including above-sea and subsea operations. Heat exchangers, propeller bore sleeves, subsea pipes, and pump/valve components all use this copper-nickel alloy.

Stock Availability

We stock CW354H in solid round bars in close incremental sizes. Our bulk central warehouse in Biggleswade also provides bar-cutting services.