Small quantities of manganese and silicon may also be present.
Duralumin is a low density alloy. It has a higher strength to weight ratio than pure aluminium. Duralumin is used for aircraft construction.
Copper alloys or alloys in which copper is usually the base metal
Gilding metal (zinc)
Muntz metal (zinc)
Prince's metal (zinc)
Titanium is mixed with aluminium (5%), and vanadium (5%).
Chromium and molybdenum might also be present. Titanium is expensive, and is only used where its special properties of low density, hardness and resistance to corrosion can not be reproduced by cheaper materials.
Titanium alloys are used in special parts of aircraft and ship construction,nuclear reactors, chemical plant and hip joint replacements.
Titanium is being increasingly used in smart alloys.
Titanium can be used in small amounts in steel.
Bronze (tin, aluminum or any other element)
Aluminum bronze (aluminum)
Bell metal (tin)
Florentine bronze (aluminum or tin)
Gunmetal (tin, zinc)
Phosphor bronze (tin and phosphorus)
Ormolu (Gilt Bronze) (zinc)
Speculum metal (tin)
Brass is an alloy of copper (70%) and zinc (30%).
Brass is harder and cheaper than copper.
It is corrosion resistant and is used for musical instruments,water taps, fixtures and ornamental objects.