C14500 Tellurium Copper
C14500 Tellurium Copper (Deoxidized Grades) has applications in the production of hot forged products, high-speed screw machine products and parts requiring high conductivity, extensive machining, corrosion resistance, copper colour, or a combination of these. The addition of tellurium enhances the strength of the copper alloy and assists in chip breakage, allowing for much higher machining speeds and ultimately longer tool life than with pure copper in high-speed screw machines.
Typical Applications:
-Gas cutting nozzles
-High-speed automatic screw machines
-Electrical Switches on power semiconductors
-Welding Torch tips
-Transformer & Circuit-breaker terminals
-Fasteners
-Production of hot forged products
Specifications
| End Product | Specification |
| Bar | ASTM B301 |
| Bar, Forging | ASTM B124 |
| Brazing Filler Metal | FEDERAL QQ-B-650 |
| Fittings | ASME B16.22 |
| Forgings, Die | ASTM B283 |
| Rod | ASTM B301, SAE J461, J463 |
| Rod, Forging | ASTM B124 |
| Shapes | ASTM B301 |
| Shapes, Forging | ASTM B124 |
| Shapes, Refinery | ASTM B216 |
| Wire | ASTM B301 |
Chemical Composition:
| Cu | P | Te | |
| Min/Max | 99.90 min | 0.004 – 0.012 | 0.40 – 0.7 |
| Nominals | 99.5 | 0.008 | 0.55 |
Fabrication:
| Joining Technique | Suitability |
| Brazing | Good |
| Butt Weld | Fair |
| Capacity for Being Cold Worked | Good |
| Capacity for Being Hot Formed | Good |
| Coated Metal Arc Welding | Not Recommended |
| Forgeability Rating | 65 |
| Gas Sheilded Arc Welding | Fair |
| Machinability rating | 85 |
| Oxyacetylene Welding | Fair |
| Seam Weld | Not Recommended |
| Soldering | Excellent |
| Spot Weld | Not Recommended |
Physical Properties:
| Product Property | US Customary | Metric |
| Coefficient of Thermal Expansion | 9.5 · 10 6? per °F (68-212 F) | 17.1 · 10 6? per °C (20-100 C) |
| Coefficient of Thermal Expansion | 9.7 · 10 6? per °F (68-392 F) | 17.5 · 10 6? per °C (20-200 C) |
| Coefficient of Thermal Expansion | 9.9 · 10 6? per °F (68-572 F) | 17.8 · 10 6? per °C (20-300 C) |
| Density | 0.323 lb/in3 @ 68 F | 8.94 gm/cm3 @ 20 C |
| Electrical Conductivity | 93 %IACS @ 68 F | 0.544 MegaSiemens/cm @ 20 C |
| Electrical Resistivity | 11.2 ohms-cmil/ft @ 68 F | 1.86 microhm-cm @ 20 C |
| Melting Point Liquid US | 1976 F | 1080 C |
| Melting Point Solid US | 1924 F | 1051 C |
| Modulas of Elasticity in Tension | 17000 ksi | 117000 MPa |
| Modulas of Rigidity | 6400 ksi | 44130 MPa |
| Specific Gravity | 8.94 | 8.94 |
| Specific Heat Capacity | 0.092 Btu/lb/°F at 68 F | 393.5 J/kg · °K at 293 K |
| Thermal Conductivity | 205.0 Btu · ft/(hr · Ft2 · °F) at 68 F | 354.8W/m · °K at 20 C |
Sizes Available:
| HOLLOW RODS | Min Bore Size 20 mm and Max OD 100 mm |
| ROUND RODS | 8mm To 100 mm |
| HEX | 10mm To 60mm |
| SQUARE | 10mm To 60mm |
| FLAT | 10mm Min Thickness and max Width 120mm |
| BILLETS | Up to 200 mm |
| INGOTS | As per Specification |
