plating type
tin-lead plating
Tin/Lead Alloy plating is primarily used as a coating on electronic connector components, preventing corrosion and serves as a base for soldered applications. Deposit color is gray-white and ranges from matte to bright in appearance depending on the process used.
specifications
MIL-P-81728 Plating, Tin-Lead (Electrodeposited) (This canceled spec is still in wide use.)
ASTM B 579 Electrodeposited Coatings of Tin-Lead Alloy (Solder Plate)
Service Conditions (thicknesses):
On Steel:
- SC-10.0002"
- SC-20.0004"
- SC-30.0005"
- SC-40.0012"
On Copper:
- SC-10.0002"
- SC-20.0003"
- SC-30.0006"
- SC-40.0012"
About Composition:
Tin deposits are 50 to 70 percent by weight, other metals and non-metallics 1 percent maximum, with the remainder being lead. Other compositions may be specified with the percentage of tin no more than 10 percent from the specified nominal value.