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Gold Plating

Gold Plated Connector Screw

For those seeking electrical and thermal conductivity (especially at low voltages), exceptional solderability, corrosion resistance, and superb infrared reflection properties, Gleco offers gold plating in several specs: MIL-G-45204, ASTM B488 or AMS 2422.

There are three types of gold plating, Type I, II, and III representing a range of soft and hard gold formulations:

  • Type I requires a minimum of 99.7% gold with a hardness grade of A, B, or C.
  • Type II requires a minimum of 99.0% gold with a hardness grade of B, C or D.
  • Type III requires a minimum of 99.9 % with a hardness grade of A.

Soft gold plating is used when higher purity is required, such as in soldering, wire bonding, and high-temperature/corrosion-resistant applications.

Hard gold plating is often used in applications containing constant sliding or connection wear (e.g., female-to-male interconnect pins or contacts).

Unlike silver, gold is a noble metal that does not oxidize or react chemically (under normal conditions).

The Gold Plating Process

Gold plating is applied in three simple steps:

  1. Parts are carefully cleaned to remove surface contaminants (e.g., oil, grease, etc.).
  2. The gold plating bath is prepared with consideration for both the surface and application.
  3. Parts are lowered into the prepared plating solution.

Material Options

Gold plating can be applied to a variety of metal substrates:

  • Mild, Hardened, and Stainless Steels
  • Copper Alloys
  • Brass
  • Aluminum Alloys
  • Inconel
  • Hastalloy
  • Monel

Benefits of Gold Plating

Gold plating is preferred by the electronics and semiconductor markets for numerous reasons, including:

  • Aesthetics
  • Electrical and thermal conductivity
  • High solderability
  • Corrosion and wear resistance
  • Infrared reflectivity

Gold Plating Applications

Gold plating is used by medical, electronics, and telecommunications industries to finish:

  • Circuit boards
  • Transistors
  • Computer chips
  • Semiconductor components

Whether you require Soft Gold Plating for more malleable applications or Hard Gold Plating for more durability, the plating experts at Gleco Plating can help.