Gold Plating
Click to enlargeOther than its aesthetic appearance gold plating has many useful characteristics. The first being that it provides excellent corrosion and tarnish resistance. Second, gold plating is a great finish if conductivity is a major concern. One of the important characteristics of gold plating is that it has an extremely low contact resistance for electricity. Lastly, gold provides a great finish for solderabilty.
- Type I: 99.7% gold minimum (Grades A, B, or C).
- Type II: 99.0% gold minimum (Grades B, C, or D).
- Type III: 99.9% gold minimum (Grade A only).
- Grade A: 90 Knoop maximum.
- Grade B: 91-129 Knoop.
- Grade C: 130-200 Knoop.
- Grade D: 201 Knoop and over.
- Class 00: .00002" minimum thickness
- Class 0: .00003" minimum thickness
- Class 1: .00005" minimum thickness
- Class 2: .00010" minimum thickness
- Class 3: .00020" minimum thickness
- Class 4: .00030" minimum thickness
- Class 5: .00050" minimum thickness
- Class 6: .00150" minimum thickness
MIL-G-45204C
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