High purity copper wires are typically above 99.95 percent and have been refined to remove impurities. They are valued for their advantages in terms of conductivity, tensile strength and ductility, especially in applications requiring high electrical conductivity and low resistance. This combination of features makes them ideal for electrical wires and cables, including high-voltage ones, superconducting magnets and semiconductors.
Chinese suppliers of copper wires are working to introduce more types with a high level of purity to take advantage of rising demand. Hubei Zhongke Huaye offers 0.015 to 0.72mm wires that are up to JISC 3202, NEMA MW79-C and IEC 60317-20 standards. These products have a heat resistance class of 155 C and are mainly used in electric relays, transformers and coils.
China is one of the largest production bases for copper wires and offers a range of options. Based on the specific alloys of copper used, there are C10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910, C10920, C10930, C11000, C11300, C11400, C11500, C11600, C70620, C71000, C71500, C71640 and C72200 kinds. By heat treatment process, T1, T2, T3, TU0, TU1, TU2, TP1, TP2 and TAg0.1 variants can be easily sourced.
These copper wires range in diameter from 0.1 to 5mm and are available in material temper designations of O, 1/2H, 3/4H, H, EH and SH. They are made to meet JIS, DIN, GB, EN and ASTM quality requirements and are usually used in cables, motors, transformers, and speaker and voice coils.
Manufacturers emphasize their capability to customize products in various diameters, lengths, coatings and colors.
All copper used is sourced domestically. The cost is expected to continue rising and might lead to higher prices in the coming months.
Pure-copper wire
Company: Qingdao Xinzhonglian Steel Co. Ltd
The T1/T2-9562 wire from Qingdao Xinzhonglian is made of pure copper and is available in various surface finishes, including milled, polished, bright and sandblasted. It complies with ASTM, AISI, JIS, DIN, GB and EN standards.
MOQ: 300kg
Lead time: 7 days
Pure-copper wire, with surface finish options
Company: Qingdao Xinzhonglian Steel Co. Ltd
Qingdao Xinzhonglian’s T1/T2-6617 is a pure-copper wire with a milled, polished, bright or sandblasted surface finish. It follows the ASTM, AISI, JIS, DIN, GB and EN quality specifications.
MOQ: 300kg
Lead time: 7 days
Copper wire, 0.1 to 5mm diameter
Company: Shandong Jurong Steel Ltd
The C44400, C44500, C60800 and C63020 copper wires from Shandong Jurong are available in C71000, C71500, C71520, C71640, C72200, T1, T2 and T3 based on the specific alloys used. Its diameter ranges from 0.1 to 5mm and can also be customized along with the length. These wires conform to JIS, ASTM, DIN and EN standards.
MOQ: 1 metric ton
Lead time: 7 days
Copper wire, 100kg MOQ
Company: Shandong Jurong Steel Ltd
Shandong Jurong’s C10500-9338 copper wire comes in 0.1 to 5mm-diameter variants with a milled, polished, bright, mirror or sandblasted surface finish. It meets JIS, ASTM, DIN and EN requirements.
MOQ: 100kg
Lead time: 7 days
Copper wire, 130 to 220 C thermal class
Company: Tometal Industrial Co. Ltd
The Ananas-215 from Tometal is available in PEW, PIW, EIW, AIW and EI/AIW versions based on the insulation used. This copper wire, with a thermal class rating of 130 to 220 C, suits motors, transformers, and speaker and voice coils. It measures 0.1 to 5mm in diameter.
MOQ: 1 ton
Lead time: 7 days
Copper wire, PEW, PIW, EIW, AIW, EI/AIW variants
Company: Tometal Industrial Co. Ltd
Tometal’s Ananas-216 copper wire has a thermal class rating of 130 to 220 C. It is available in PEW, PIW, EIW, AIW and EI/AIW types for use in motors, transformers, and speaker and voice coils. Based on diameter, there are 0.1 to 5mm options.
MOQ: 1 ton
Lead time: 7 days
