C10200 copper bar is a high-purity oxygen-free copper material. Its production process and product advantages are as follows:

1. Production process

Raw material smelting

Use vacuum smelting or inert gas protection technology (such as argon) to effectively control the oxygen content of copper liquid (≤0.003%) and avoid hydrogen embrittlement. Some companies use raw materials such as waste copper and zinc ingots, smelt them through industrial frequency furnaces, and match them with smoke treatment systems.

Continuous casting

Copper rod billets are made through upward continuous casting or horizontal continuous casting processes to ensure that the internal structure of the material is uniform and dense. The molten copper water enters the continuous casting machine through the insulation furnace, and the cooling circulating water system controls the solidification process.

Forming processing

Hot extrusion: The continuous casting billet is heated to 800-900℃ and formed into a thick bar through an extruder, which is suitable for the production of large diameter specifications (20-450mm). Cold drawing: The hot extruded bar is subjected to multiple cold processing steps to gradually refine to the target size (diameter 1-200mm), while improving the surface finish and dimensional accuracy.

Annealing treatment

Intermediate annealing (temperature 400-600℃) is carried out during the processing to eliminate work hardening; finished product annealing optimizes conductivity and plasticity, and finally obtains soft (O state) or semi-hard (H state) products.

Post-processing and testing

Including drawing, sawing, straightening and other processes, combined with SGS certification to test chemical composition (Cu≥99.95%), conductivity (≥101%IACS) and mechanical properties to ensure compliance with international standards such as ASTM, JIS, and DIN.

2. Product advantages

Excellent electrical and thermal conductivity

Electrical conductivity ≥101%IACS, thermal conductivity 385W/(m·K), suitable for high-power electrical and thermal management scenarios such as high-voltage cables, transformer windings, and semiconductor heat dissipation substrates.

Excellent processing performance

It can be cold/hot extruded, stamped, forged, drawn and other complex forming, and can meet the needs of various cross-sections such as round, square, hexagonal, etc.

It has outstanding welding performance, supports TIG welding, MIG welding and resistance welding, and the joints are airtight and high in strength.

High purity and corrosion resistance

The oxygen content is ≤30ppm, avoiding high-temperature hydrogen embrittlement; the surface oxide film is dense, resistant to atmospheric, seawater and chemical medium corrosion, and has a service life of more than 20 years.

Excellent mechanical properties

Tensile strength ≥295MPa, elongation ≥3%, with high elasticity and fatigue limit, suitable for manufacturing precision instrument parts.

The low-temperature performance is stable and can maintain functionality in extreme environments of -196℃.

Wide application areas

Covering industries such as electrical (wires, connectors), electronics (integrated circuit lead frames), energy (nuclear industry equipment), transportation (auto parts) and high-end manufacturing (laser cavities).