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Copper

High-Conductivity | Corrosion-Resistant | Precision-Processed

At Source 21, we offer a wide range of copper alloys in various forms, gauges, and tempers to support demanding applications across electrical, aerospace, automotive, power generation, and industrial manufacturing. With tight tolerance capabilities and deep inventory, we are your trusted source for copper coil, strip, bar, plate, rod, and sheet—processed to your exact specifications.
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Commonly Stocked Copper Grades

C10100 (OFE Copper – Oxygen-Free Electronic)

  • 99.99% pure copper
  • Extremely high electrical and thermal conductivity
  • Used in electronics, aerospace, and high-vacuum systems

C10200 (OF Copper – Oxygen-Free)

  • 99.95% pure copper
  • Excellent conductivity and resistance to hydrogen embrittlement
  • Ideal for high-vacuum and hydrogen-rich environments

C11000 (ETP Copper – Electrolytic Tough Pitch)

  • Most commonly used copper grade (~101% IACS conductivity)
  • Excellent formability and general-purpose usability
  • Used in power generation, switchgear, and industrial manufacturing

C12200 (DHP Copper – Deoxidized High Phosphorus)

  • Excellent weldability and corrosion resistance
  • Common in plumbing, HVAC systems, and heat exchangers

C14500 (Tellurium Copper)

  • Free-machining copper with good conductivity
  • Ideal for terminals, connectors, and precision-machined electrical components

C18100 (Chromium Copper)

  • Excellent wear resistance and moderate conductivity
  • Common in resistance welding electrodes and heavy-duty electrical parts

C17200 / C17000 (Beryllium Copper – High Strength Alloys)

  • Outstanding strength, hardness, and fatigue resistance
  • Good electrical and thermal conductivity
  • Used in aerospace, electronics, spring contacts, and high-load components
  • Also referred to as C172, C170

C17500 / C17510 (Beryllium Copper Alloys)

  • Lower beryllium content for a balance of strength and conductivity
  • Excellent for spot welding tips, connectors, and current-carrying components
  • Often used in automotive and industrial electrical assemblies

Common Forms Available

  • Coil
  • Strip
  • Sheet
  • Bar
  • Plate
  • Rod

Common Applications

  • Electrical & Power Generation – Busbars, conductors, switchgear, connectors
  • Automotive – Battery terminals, heat transfer components, wiring
  • Aerospace – Grounding, EMI shielding, spring-loaded components
  • HVAC & Plumbing – Tubing, fittings, heat exchanger systems
  • High-Precision Machining – Electrical contacts, high-strength mechanical parts, resistance welding

Processing Capabilities

  • Precision Slitting & Cutting – Custom widths and tight tolerances
  • Custom Gauges & Tempers – Engineered to match performance and manufacturing needs
  • Plating Options – Nickel, Tin, Silver, and Zinc coatings for added conductivity and corrosion protection
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With one of the most comprehensive copper inventories in the industry—including hard-to-find alloys like Beryllium Copper (C17200, C17510)—Source 21 is ready to support your next project with expertise, speed, and precision.

Contact us today to discuss your copper material requirements or request a quote!

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Founded in 1990 Source 21 is a leading distributor and processor of stainless steel, copper and brass products.

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