Page 19 - Curriculum Visions Dynamic Book

ZnSn Al
Fe
Corrosion resistance
alloy: a mixture of a metal and various other elements.
brazing: a form of soldering, in which brass is used as the joining metal.
 Brass is commonly used for musical instruments because it is relatively light, easy to shape, strong even when thin, and has an attractive colour.
Fe
P Sn
Cr
Ni Zr
Strength
Mn
As
Si
Mn CuNi Si
Al
Sn
Ni
Si Ag
Cd Sn
Decorative brass has a low zinc content (usually between 10 and 20%). It is called architectural brass.
 The famous Benin bronzes from southern Nigeria are highly regarded pieces of art, the earliest of which were made 700 years ago. Most Benin bronzes, however, are made of alloys that contain more zinc than tin and so
are really brass. Their intricate shapes are cast using the lost-wax process.
Colour
Zn
Machinability
Zn Te Pb S
Tarnished surface from exposure to air.
Al
Wear resistance
Shape-changing brass
A form of brass can be made that changes its shape above a certain temperature and returns to its original shape when it cools down.
This “memory” brass
can be used to operate safety devices and other applications. It is used, for example, in the automatic switching devices in many electric jugs and kettles.
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