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

Need C145 Copper Round Bar?

Contact our sales engineers for a custom quote on C145 (C14500) copper round bar — tailored dimensions, tempers, and finishing options for your exact specifications.

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