Aluminium Bronze
This alloy contains from 6 to 10 per cent. of aluminium, and is prepared by fusing chemically-pure copper with aluminium. The standard bronze in use consists of ninety parts of copper to ten of aluminium. It gives sharp castings, is easier to work than steel, can be engraved, rolled into sheets or drawn into wire and when exposed to the air suffers less change than cast iron, steel, silver or brass. It can be soldered only with an aluminium alloy.