MIL-DTL-45204, ASTM B488
Gold Plating is employed for their corrosion and tarnish resistance (including resistance to fretting corrosion and catalytic polymerization), bondability, low and stable contact resistance, solderability, and infrared reflectivity.
TYPES
Type 1 – 99.70%
Type 2 – 99.00%
Type 3 – 99.90%
GRADE
Grade A – Knoop Hardness 90 max
Grade B – Knoop Hardness 91 – 129,incl
Grade C – Knoop Hardness 130 – 200,incl
Grade D – Knoop Hardness 201 and over
CLASSES
Class 00 – minimum 0.508 µm Class 3 – minimum 5.08 µm
Class 0 – minimum 0.762 µm Class 4 – minimum 7.62 µm
Class 1 – minimum 1.27 µm Class 5 – minimum 12.7 µm
Class 2 – minimum 2.54 µm Class 6 – minimum 38.1 µm
GOLD PLATING-PROCESS CONTROL & TEST METHOD
VISUAL INSPECTION – MIL-DTL-45204
HARDNESS TEST – ASTM B578,ASTM E384
HEAT RESISTANCE TEST – MIL-DTL-45204
THICKNESS TEST – ASTM B486,2.ASTM B567,3.ASTM B568
SOLDERABILITY TEST – MIL-DTL-45204
ADHESION TEST – MIL-DTL-45204
HYDROGEN EMBRITTLEMENT MIL-DTL-45204