When metal is cold worked or formed it becomes work hardened or strain hardened. Copper conductors go through a considerable amount of work hardening as the copper rod is drawn down through ever decreasing die sizes until the required conductor dimension is achieved. Copper in this state is known as hard drawn copper.
Hard drawn copper is difficult to work with and stranding and bunching of the finer wires in this state would be very difficult. By heat treating the copper at the correct temperatures the ductility can be restored to make the cable soft and flexible again. The heat treating process is known as annealing and the resulting metal is known as soft annealed copper. The degree of annealing is controlled by temperature and time, copper wire is used with different degrees of annealing depending on the application.
Hard drawn copper has significantly higher tensile strength than soft annealed copper and is used as overhead wire whereas the soft annealed copper is flexible and has somewhat improved conductivity over hard drawn copper conductor.
Annealed copper - Tensile strength 300-400 ksi (kilopound per square inch). Conductivity 100.00 % IACS
Hard drawn copper - 500-700 ksi. Conductivity 97 % IACS
Copper wire has several important properties that make it a “natural” for electrical wiring. More than any other non-precious metal, it is the best conductor of electricity, packing more power into a given diameter of wire than any substitute material. Copper wire is also easier to bend. With copper wire, connections are easy and sure. And, because it has a high melting point, it can take surprisingly heavy overloads or current surges without damage or danger.
|Description||C37000 H62 Brass sheet Coil / C2680 CuZn37 Brass Strip|
|Standards||ASTM, AISI, JIS, SUS, EN, DIN, BS, GB|
|Related Material||T2, T3, TP1, TP2, TU1, TU2,H96, H80, H90, H70, H65, H68,nH62,H59, HP59-1, HMn58-2, HSn62-1, HMn55-3-1, HMn57-3-1,nHAl60-1-1,HAl67-2.5, HAl66-6-3.2, HNi65-5|
|Price Term||EX-Work, FOB, CFR, CIF|
|Payment Term||T/T, L/C, Western Union|
|Delivery Time||According to order' s quantity|
|Package||Export standard package: bundled wooden box or be required;The inner size of container is below:(1)20 foot GP: 5.8m(length)x 2.13m(width)x 2.18m(high)nabout 24-26 CBM(2)40 foot GP: 11.8m(length)x 2.13m(width)x 2.72m(high)nabout 68 CBMWe will packing as the factory, and reach the stander of export.Or as the customer request. In addition,We will make the products with good surface protection.|
|Application||Has a good thermal conductivity, processability, ductility, corrosion resistance and weatherability.nnCan be used in electrical appliances, construction and chemical industry, especially terminal PCB, wire covered with copper belt, air cushion, bus terminalnCan be in auto radiator pipe, snap fastener, camera, radiator, etc.nCan draw to shallow stretch nameplate, badges|
|Attention||As a specialized manufacturer and exporter of thenabove products in china, this collection is the most popularnstyle in our factory, selling fast!We can also produce the stainless steel sheet, bar, pipe,ntube etc.We will give you the bottom price and the fastest speednand then give you the satisfied service for you.|