Tellurium Copper Plate/ Coil

Tellurium copper is a copper alloy containing a small amount of tellurium (Te), usually between 0.4% and 0.7%. This alloy combines the excellent electrical conductivity and thermal conductivity of copper with the easy cutting property of tellurium, and can meet the low temperature rise and high voltage arc resistance test at the application end, and is suitable for high-voltage DC relays, connectors, automotive terminals, etc.

1、Characteristic

a. Easy cutting:

Tellurium (0.4%~0.7%) forms brittle telluride copper particles, making the plate easier to turn, drill and mill, with high surface finish and long tool life.

b. Electrical conductivity/thermal conductivity:

Electrical conductivity ≥90% IACS (International Annealed Copper Standard), close to pure copper, but the processing performance is significantly better than pure copper plate.

c. Mechanical properties:

Tensile strength: 200~300 MPa (depending on the state: soft, hard or semi-hard)

Elongation: 15%~30% (soft state is better)

Hardness: HRB 40~80 (can be adjusted by cold working).

d. Corrosion resistance:

Resistant to atmospheric, water and non-oxidizing acid corrosion, but avoid environments such as sulfides and ammonia.

2、Common Specifications

Thickness: 0.5mm~50mm (customizable thicker or ultra-thin specifications)

Width: 100mm~600mm (common), up to 1200mm (depending on the manufacturer's capabilities)

Length: 1000mm~3000mm (standard coil or flat plate)

State: soft (O), semi-hard (H02), hard (H04)

3、Typical Applications

Automobile and Aerospace

Sensor substrates, battery connectors, High voltage relay (moving contact).

Electronics industry

Circuit board electrodes, connectors, switch contacts and other parts that require high conductivity and precision stamping.

Welding and EDM

Electrode plates, welding machine conductive nozzles and other high temperature wear-resistant components.

Architecture and Decoration

High-demand conductive decorative panels (need surface nickel/chromium plating to prevent oxidation).