Copper Alloys - Brass, Bronze, ComBro, Phos Bronze, BeCu, Cupro Nickel
While copper, used for 10,000
years, is one of mankind’s first metals, bronze, in use for over 5,000
years, is no youngster. It is considered the world’s first alloy,
predating brass by three millenia. Brass objects have been found in the
homes of ancient Rome, dating back to 100 B.C. but not before.
Bronze is copper alloyed with tin – most commonly with 10 percent tin.
Brass is copper alloyed with zinc – most commonly with 30 percent zinc.
Aluminum alloys are normally classified into one of three groups:
wrought non-heat-treatable alloys, wrought heat treatable alloys, and
Aluminium is the world’s most abundant metal and is the third most common element, comprising 8% of the earth’s crust. The versatility of aluminium makes it the most widely used metal after steel.
Although aluminium compounds have been used for thousands of years, aluminium metal was first produced around 170 years ago.
In the 100 years since the first industrial quantities of aluminium were produced, worldwide demand for aluminium has grown to around 29 million tons per year. About 22 million tons is new aluminium and 7 million tons is recycled aluminium scrap. The use of recycled aluminium is economically and environmentally compelling. It takes 14,000 kWh to produce 1 tonne of new aluminium. Conversely it takes only 5% of this to remelt and recycle one tonne of aluminium. There is no difference in quality between virgin and recycled aluminium alloys.