ASTM B700, AMS 2410, AMS 2411, AMS 2412
Silver Plating is employed for solderable surfaces, electrical contact characteristics, high electrical and thermal conductivity, thermo-compression bonding, wear resistance of load-bearing surfaces and spectral reflectivity.
TYPES
Type 1 – 99.9%
Type 2 – 99.0%
Type 3 – 98.0%
GRADE
Grade A, Mat – Electrodeposits without luster, obtained from electroplating solutions operated without the use of brighteners.
Grade B, Bright – Electrodeposits obtained by the use of brighteners in the electroplating bath.
Grade C, Bright – Electrodeposits obtained by mechanical or chemical polishing of Grade A silver coatings.
Grade D, Semi bright – Electrodeposits obtained by the use of addition agents in the electroplating bath.
SUPPLEMENTARY SURFACE TREATMENT—SPECIFY BY CLASSES
Class N—A finish that has had no supplementary tarnish resistant (that is, chromate) treatment
Class S—A finish that has had a supplementary tarnish resistant (that is, chromate) treatment.
SILVER PLATING-PROCESS CONTROL & TEST METHOD
VISUAL INSPECTION – ASTM B700
HARDNESS TEST – ASTM B578
THICKNESS TEST – ASTM B486,2.ASTM B567,3.ASTM B568
SPECULAR REFLECTANCE – ASTM B700
SOLDERABILITY TEST – ASTM B700
ADHESION TEST – ASTM B571
HYDROGEN EMBRITTLEMENT – ASTM F519
ELECTRICAL CONDUCTIVITY – ASTM E1004