Brass Copper Castings India
C14500 Tellurium Copper

Copper No. C14500
Tellurium Copper , CDA 145 ASTM B 301
Nominal Chemical Composition % by weight
Copper (incl. Silver) Phosphorus Tellurium
99.7 .008 .55


Forgings, screw machine products and parts requiring high conductivity, extensive machining, corrosion resistance, copper color, or a combination of these; electrical connectors, motor and switch parts, plumbing fittings, soldering coppers, welding torch tips, transistor bases and furnace brazed articles. 

Mechanical Properties

Typical for 1" solid diameter Hard (35%) Temper

Hardness* Rockwell B Scales 48
Tensile Strength** KSI 48
Yield Strength** KSI 44
Elongation** % in 2 inch 20

*Hardness conversions are approximate

**Test values are nominal approximations and depend on specimen size and orientation.

Physical Properties

Thermal Conductivity BTU/ (sq ft-ft-hr-F) 205
Specific Heat BTU/lb/ºF @ 68F .092
Thermal Expansion Per °F from 68 F to 212 F .0000095
Density lb/cu in @ 68 F .323
Electrical Conductivity* (annealed) % IACS @ 68 F 93
Modulus of Elasticity KSI 17,000

*Volume basis

Fabrication Properties

Capacity for being cold worked Good
Capacity for being hot formed Good
Hot forgeability rating (forging brass=100) 65
Hot working temperature 1400-1600 F or 750-875 C
Annealing temperature 800-1200 F or 425-650 C
Machinability rating (Free Cutting Brass=100) 85
Suitability for being joined by: Soldering/Excellent
Oxyacetylene Welding/Fair
Gas Shielded Arc Welding/Fair
Coated Metal Arc Welding/Not Recommended
Resistance Welding Spot/Not Recommended
Seam/Not Recommended