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C145
Copper 145 – Tellurium-Bearing Round Bar
C14500
Overview
Copper 145 (C14500) is a tellurium-bearing free-machining copper alloy with machinability rating of 85 and 93% IACS conductivity.
Chemical Composition
| Element | Min | Max |
|---|---|---|
| Copper (Cu) | 99.90% | — |
| Tellurium (Te) | 0.40% | 0.70% |
| Phosphorus (P) | 0.004% | 0.012% |
Alloy Designations
UNSC14500
Common NameTellurium Copper
ASTMB124, B301
Mechanical Properties
Tensile Strength (½ Hard)43 ksi (296 MPa)
Yield Strength (½ Hard)40 ksi (276 MPa)
Elongation (½ Hard)18%
Machinability Rating85
Physical Properties
Density8.94 g/cm³
Electrical Conductivity93% IACS
Thermal Conductivity355 W/m·K
Typical Applications
- Screw machine products
- Electrical connectors
- Motor and switch components
- Soldering copper tips
- Fasteners and rivets
Fabrication & Joining
- Excellent machinability (85 rating)
- Good cold forming
- Soldering: Good
- Brazing: Good