Gold plating offers good corrosion resistance, good solderability, and when alloyed with nickel, very good wear resistance. Gold is a noble precious metal and will not oxidize in air. Consequently, Gold’s electrical conductivity stays uniform over long periods of time and it is therefore ideally suited for electronics and communications applications. Keystone Corporation offers gold plating for both rack and barrel applications.

Gold plating can be deposited soft or hard, dull or bright. Co-deposited impurities can make soldering more difficult, and for this reason high purity gold plating is preferred. Keystone Corporation utilizes 24k gold in order to maintain the highest levels of purity. Soldering requirements are best achieved when gold electroplating coatings range between 0.00005 and 0.0001 inch (50 and 100 micro inches) thickness.



  • MIL-G-45204 Gold Plating, Electrodeposited (This spec has been cancelled, but is still widely used for reference.)
  • Type-I 99.7% gold minimum; hardness grade A, B, or C For general-purpose, high-reliability electrical contacts, solderability, and wire wrap connections.
  • Type-II 99.0% gold minimum; hardness grade B, C, or D A general-purpose, wear-resistant gold. It will not withstand high-temperature applications because the hardening agents in the gold coating will oxidize.
  • Type-III 99.9 % gold minimum; hardness grade A only For semiconductor components, nuclear engineering, thermo compression bonding, and high-temperature application.



  • A 90 knoop, maximum
  • B 91-129 knoop, inclusive
  • C 130-200 knoop, inclusive
  • D 201 knoop, minimum



Traditional uses of Keystone Corporation’s Gold plating include:

  • Military
  • Aerospace
  • Communications
  • Electronics


Contact Keystone Corporation for more information about our Gold Plating

For more than 90 years, Keystone Corporation has assisted customers in completing orders ranging from a few specialized pieces to high volume applications. All finishes are available for both Rack and Barrel plating applications. We maintain superior quality control through the entire finishing process, ensuring top quality Gold plating at an affordable cost for any project. Our experienced staff will provide technical assistance as well as Certificates of Compliance to commercial, government, AMS, ASTM, and MIL specifications. Meeting your manufacturing needs is our top priority at Keystone Corporation. Contact us today to receive a personalized quotation based on your specific requirements.

Some of Our Service Areas:

  • Binghamton, NY
  • Buffalo, NY
  • Chicago, IL
  • Erie, PA
  • Rochester, NY
  • Syracuse, NY
  • And more!

Plated metal parts

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