[Pulkitm]

Copper and copper alloys

Copper alloys have electrical and mechanical properties, corrosion resistance, thermal conductivity and wear resistance.

Applications are electronic components, springs and heat exchangers.
Brass is an alloy of copper and zinc.

Bronze is an alloy of copper and tin.

Have been utilized in quite a variety of applications since antiquity.
Unalloyed copper is so soft and ductile that it is difficult to machine;
it has an almost unlimited capacity to be cold worked.

it is highly resistant to corrosion in diverse environments including the ambient atmosphere, seawater, and some industrial chemicals.

The mechanical and corrosion-resistance properties of copper may be improved by alloying.

Most copper alloys cannot be hardened or strengthened by heat-treating procedures;

Only cold working and/or solid-solution alloying can be utilized to improve these mechanical properties.


Copper Properties

Red colour
Excellent thermal and electric conductor
Corrosion resistant
Good welding
Very ductile and malleable

Copper Alloys: brasses

Cartridge Brass :
70% Cu+ 30% Zn Used in Cartridges , tubes , springs etc.

Muntz Metal
60% Cu+ 40% Zn, Used in Casting , Condenser Tubes etc.

Naval Brass
60% Cu+ 39% Zn+ 1% Sn Used in Marine and engineering casting like condeser tubes , pump parts , motor boat shafting.