Aluminium Bronze CW307G
The most tarnish-resistant of all the copper alloys, aluminium bronze, (copper-aluminium alloy) offers the highest strength copper-based alloy with aluminium being the primary alloying element at typically 5 – 11% aluminium. The visual appearance of the material also does not deteriorate when exposed to the effects of atmospheric corrosion making it an ideal material for a range of uses.
Although no engineering alloy can lay claim to being completely immune to corrosion, aluminium bronzes naturally form an alumina-type protective film which acts as a highly effective barrier to wet or challenging conditions. The aluminium bronze alloy offers excellent corrosion resistance in a wide range of environments and is particularly effective in subsea applications.
CW307G Aluminium bronze is used in a wide variety of applications where outstanding performance in marine and subsea environments is needed and is commonly used in the manufacture of propellers and underwater fastenings. In the oil and gas sector, aluminium bronze is often used in the production of inert gas fans for oil tankers. The alloy is also used to make bearing bushes for aircraft frames as well as in the production of bearings, valve spindles and pump shafts. Some other examples of aluminium bronze use include the creation of impellers and high duty pumps.