What is C145 Copper?
C145 — commonly called Tellurium Copper — is a free‑machining copper alloy. A tiny addition of tellurium (~0.4–0.7%) improves chip formation and tool life while retaining the excellent electrical and thermal conductivity of nearly pure copper.
Why Use C145?
- High Conductivity: ~90% IACS electrical conductivity; great for components that need performance and precision.
- Excellent Machinability: Chips break cleanly; supports fine threads and tight tolerances.
- Consistent Finishes: Machines to smooth surfaces that look premium with minimal post‑processing.
- Corrosion Resistance: Naturally tarnish‑resistant; suitable for everyday carry and desk use.
- Premium Feel: Heft and warmth typical of copper with improved manufacturability.
How we use it: Ideal for precision parts where conductivity
and crisp machining matter, such as small
hardware, accents, and components that benefit from copper’s look and performance.
Key Characteristics
- Composition (typical): Copper with ~0.4–0.7% tellurium.
- Mechanical Behavior: Better strength and machinability than pure copper while keeping high conductivity.
- Workability: Suitable for turning, milling, drilling; takes threads and small features well.
- Weight & Feel: Denser than titanium or aluminum; delivers a solid, substantial feel in hand.
Finish & Care
- Natural Patina: Copper will darken with time and handling, developing a unique character.
- Polishing: Restore brightness with a gentle copper/brass polish and a soft cloth.
- Everyday Care: Wipe with a dry microfiber cloth; avoid abrasive cleaners that can scratch the surface.
At a Glance
- High‑conductivity copper alloy engineered for clean, precise machining.
- Delivers premium finishes and holds fine details and threads.
- Develops a handsome patina that can be brightened when desired.
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