C14500 Tellurium Copper
Copper No. C14500
Tellurium Copper , CDA 145 ASTM B 301
Nominal Chemical Composition % by weight
Tellurium Copper , CDA 145 ASTM B 301
Nominal Chemical Composition % by weight
| Copper (incl. Silver) | Phosphorus | Tellurium |
| 99.7 | .008 | .55 |
Applications
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 |
| Brazing/Good | |
| Oxyacetylene Welding/Fair | |
| Gas Shielded Arc Welding/Fair | |
| Coated Metal Arc Welding/Not Recommended | |
| Resistance Welding | Spot/Not Recommended |
| Seam/Not Recommended | |
| Butt/Fair |