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C10100 (C101) – Oxygen-Free Electronic Copper

Common Uses:
Appliance trims, kitchen sinks, furniture parts, interior architecture, food equipment, and light automotive trim.

C10100 (C101) – Oxygen-Free Electronic Copper 

The purest copper available — 99.99% oxygen-free with unmatched electrical and thermal conductivity. The go-to alloy for precision electrical and vacuum components. 

Why You’ll Like It: 

  • 101% IACS conductivity. 
  • Hydrogen embrittlement-free. 
  • Excellent polish and weldability.

Technical Snapshot:

Available Forms: Coil, strip, sheet, foil, bar, plate, and bus bar. 
Standards: ASTM B152 / B187 | CDA C10100

Tempers Explained: 

Temper 

Description 

Typical Use

O (Annealed) 

Softest, maximum conductivity, easily formed. 

Vacuum fittings, clean-room tubing.

H01 (¼ Hard) 

Lightly cold-worked, slightly stiffer. 

Flexible bus bars.

H02 (½ Hard) 

Balanced strength and conductivity. 

Contacts and brackets.

H04 (Full Hard) 

High rigidity and flatness retention. 

Flat conductors.

 

H06/H08 (Extra Hard)Maximum stiffness and shape hold. 

Stacked bus systems.

C10100 oxygen free electronic copper from Source21 is the highest purity copper available, refined to 99.99 percent oxygen free content for exceptional electrical and thermal conductivity. Delivering 101 percent IACS conductivity this premium copper grade is hydrogen embrittlement free and offers excellent polishability and weldability, making it the preferred material for precision electrical and vacuum applications. It is widely used in semiconductor hardware RF waveguides bus bars cryogenic components and high purity conductors where performance consistency and cleanliness are critical. C10100 copper is offered in a full range of tempers from annealed for maximum conductivity and formability to extra hard for superior stiffness and dimensional stability, supporting applications from vacuum fittings and clean room tubing to stacked bus systems. Source21 supplies C10100 copper in coil, strip, sheet, foil, bar, plate, and bus bar, all produced to ASTM B152, ASTM B187, and CDA C10100 standards. Contact the Source21 team to place an order discuss temper selection or receive expert guidance for high performance copper applications backed by reliable supply and responsive service.

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