Extensive Selection of Copper and Brass Alloys

A.J. Oster stocks and supplies the broadest product range of copper and brass alloys in the industry. Our inventory includes all of the alloys listed below in a variety of forms including foil, sheet, strip, and coil, as well as a wide assortment of High Performance Alloys from Olin Brass, for enhanced performance. A.J. Oster is the exclusive distributor for Olin’s anti-microbial copper product (Cuverro). This anti-microbial copper kills 99.9% of bacteria on it’s surface when cleaned regularly. We also supply copper clad alloys that are tailored to meet specific customers’ needs.

Alloys are selected for applications based on strength, formability, conductivity, corrosion resistance, stress relaxation, wear resistance, color, machinability and other qualities. Each series of alloys will offer the ability to customize the performance of copper for the application.


Copper and Brass Availability

100 Series Copper

  • Content: High Purity (>95% Copper)
  • Highest Electrical and Thermal Conductivity
  • Good Formability
  • Low Mechanical Strength
  • Poor High Temperature Performance
  • See also Architectural Copper Product Page

200 Series Brass

  • Content: Copper and Zinc Alloys
  • Moderate Electrical Conductivity
  • Excellent Machinability
  • Poor Formability
  • Poor High Temperature Performance
  • Better Elasticity than Copper
Brass Product Image

Other Brass Availability

300 Series Leaded Brass

  • Content: Copper, Zinc and Lead Alloys
  • Moderate Electrical Conductivity
  • Moderate Strength
  • Excellent Machinability
  • Poor Formability
  • Poor High Temperature Performance

400 Series Tin Brass

  • Content: Copper, Zinc and Tin Alloys
  • Moderate Electrical Conductivity
  • Moderate Strength
  • Good Formability
  • Good High Temperature Performance
  • Relatively Inexpensive

Bronze Availability

500 Series Phosphor Bronze

  • Content: Copper, Tin and Phosphorous
  • High Thermal Resistance
  • High Tensile and Mechanical Strength
  • Low Electrical Conductivity
  • Directional Formability
  • Good Resistance to Stress Relaxation
  • Good Spring Properties
  • Good Ductility and Resistance to Fatigue

600 Series Misc. Bronzes

  • Content: Copper, Aluminum, Zinc, Silicon, Cobalt, Tin and Chromium
  • High Strength
  • Low Conductivity
  • High Wear Resistance (alloy 638)
  • Good Stress Relaxation and Spring Properties (alloy 654)
  • Non-Directional Formability (alloy 688)

Other Alloys

700 Series Cupro Nickels and Nickel Silver

  • Content: Copper, Nickel and Zinc
  • Exceptional Corrosion Resistance
  • High Mechanical Strength
  • Good Ductility for Deep Draw
  • Good Fatigue Resistance
  • Low Conductivity
  • Attractive Colors
  • More Expensive Than Other Alloys

High Perfomance Alloys

  • Content: Combinations of Copper, Nickel, Tin, Phosphorus, Iron, Zinc, Cobalt, Magnesium, Titanium, silver or Chromium
  • Alloys Include: 151, 19020, 19025, 194, 195, 197, 19720, 18080, 638, 654, 688, 702 and 7035
  • Best Combination of Strength to Conductivity
  • High Mechanical Strength
  • Exceptional Abrasion Resistance
  • Excellent Electrical Properties
  • Environmentally Friendly


  • Stamping
  • Locks
  • Doorknobs
  • Heat Exchangers
  • Lamp Fittings
  • Marine Hardware
  • Junction Boxes
  • High Current Connectors
  • Building and Construction
  • Roofing
  • Trophies
  • Badging
  • Ammunition
  • Electrical Wiring
  • Plumbing Hardware
  • Tubing & Piping Systems
  • Cartridge Casings
  • Valves
  • Springs (Mechanical Springs, Electrical Contact Springs, Spring-Type Electrical Connectors)
  • Diaphragms and Bellows
  • Jacks
  • Connectors
  • Terminals
  • Ornamental Trim
  • Jewelry
  • Emerging Technologies
  • Switchgears
  • Automotive Components

See Also the Architectural Copper Product Page

Architectural Copper