|
Tin/Lead
Alloy plating is primarily used as a coating
for corrosion protection, and as a base for soldering. Color is gray-white,
matte to bright in appearance depending on the process used.
Specification:
MIL-P-81728 Plating, Tin-Lead (Electrodeposited) (This spec has been cancelled,
but is still in wide use.)
Specification:
ASTM B 579 Electrodeposited Coatings of Tin-Lead Alloy (Solder Plate)
| |
Service
Conditions (thicknesses): |
On
Steel: |
| |
|
SC-1 |
0.0002" |
| |
|
SC-2 |
0.0004" |
| |
|
SC-3 |
0.0005" |
| |
|
SC-4 |
0.0012" |
| |
|
On
Copper: |
| |
|
SC-1 |
0.0002" |
| |
|
SC-2 |
0.0003" |
| |
|
SC-3 |
0.0006" |
| |
|
SC-4 |
0.0012" |
About
Composition: Tin should be 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.
|