copper grades & specifications
||CW004A||Electrolytic, tough pitch, high conductive copper|
||CW008A||Oxygen free high conductivity copper|
||CW114C||Sulphur copper (free machining)|
||CW118C||Tellurium copper (free cutting)|
|CC102||CuCr1Zr||CW106C||Copper Chrome Zirconium|
a brief background on copper
Copper is the oldest metal used by man. It’s use dates back to prehistoric times. Copper has been mined for more than 10,000 years with a Copper pendant found in current day Iraq being dated to 8700BC. By 5000BC Copper was being smelted from simple Copper Oxides. Copper is found as native metal and in the minerals cuprite, malachite, azurite, chalcopyrite and bornite. It is also often a by-product of silver production. Sulphides, oxides and carbonates are the most important ores.
Copper and copper alloys are some of the most versatile engineering materials available. The combination of physical properties such as strength, conductivity, corrosion resistance, machinability and ductility make copper suitable for a wide range of applications. These properties can be further enhanced with variations in composition and manufacturing methods.
Did you know, until the late 18th century it was believed that ringing church bells repelled lightning so many church bells bore the inscription fulgura frango, meaning ‘I chase lightning’.
During a thunderstorm, bell ringers would run to the bell tower to ring the bells. However, a high tower with a metal bell was in fact about the worst place to be.
Between 1753 and 1786 in France, 103 bell-ringers were struck by lightning and killed, resulting in the custom being banned.
electrical conductivity of copper
The electrical conductivity of Copper is second only to silver. The conductivity of Copper is 97% that of silver. Due to its much lower cost and greater abundance, Copper has traditionally been the standard material used for electricity transmission applications.
copper flat bar weight – kg per metre
|WIDTH (MM) – KG/METRE||THICKNESS (MM)|