albaloy plating

Albaloy, a tri-metal alloy consisting of copper, tin, and zinc (also known as White Bronze or Bright Alloy.) This deposit provides excellent corrosion resistance, and may be used as a barrier layer to prevent intermetallic growth (the migration of metals such as gold or silver into copper). Albaloy deposits have chemical and physical properties totally unlike any of the component metals. This unique combination of properties inherent in this alloy form a deposit that has the following performance advantages:

• Bright lustrous deposit (Similar to bright tin)
• High tarnish resistance
• Superior corrosion resistance
• Abrasion resistant with a hardness of 450-500 Knoop
• Excellent solderability
• Non-magnetic
• High electrical conductivity
• Low contact resistance
• Low deposit stress
• Temperature resistant to 700ºF (inert atmosphere)
• Lead Free

Applications: The Albaloy process is well suited for use on electrical components including precision instrumentation and in high frequency uses where tarnish resistance and good conductivity (over 35% as compared to pure copper at ultra high frequency) make it superior to other non-precious coatings. Parts coated with Albaloy work well in contact/switch applications where long sliding life or high intermittent switch life is required. The deposit can be soldered using non-corrosive flux more easily than tin coated parts, which over time may become oxidized during storage and environmental exposure.

specifications

Customer or CAI specification