Tin Plating -
Color is gray-white in a plated condition. Has very high luster in fused condition. Soft, but is very ductile. Corrosion resistance is good. (Coated items should meet 24 hour 5% salt spray requirement). Solderability is excellent. Tin is not good for low temperature applications (changes structure and loses adhesion when exposed to temperatures below -40º C.) Plate directly on steel substance (no undercoating for steel unless otherwise specified). |
Specification
|
Thickness
|
Comments
|
| MIL-T-10727C |
| Type I |
As specified on drawing.
Thickness guide (not part of spec.) as follows:
|
| |
.0001-.00025" |
| |
.0002-.0004" |
| |
.0003 min. |
| |
.0002-.0006" |
| Type II |
-------------------------------------- |
|
Electrodeposited. Use ASTM-B-545 as guideline. If not specified, bright will be generally provided
Please note: This specification is provided for reference purposes only as it has been superceded by ASTM-B-545 (See below). |
| Flash for soldering |
| To prevent galling and seizing. |
| Where corrosion resistance is important |
| To prevent formation of case hardening during nitriding. |
Hot dipped (not currently available at MAF)
|
|
| ASTM-B-545-97e1 |
Types are matte, bright, or flow-brightened
| Class A |
.0001" min |
| Class B |
.0002" min |
| Class C |
.00032" min |
| Class D |
.0006" min |
| Class E |
.0012" min |
|
| |
| .0004" min. for steel. |
| .0008" min. for steel. |
| ASTM requires purchaser to supply information, such as base metal, underplating, test requirements and test methods etc. In general, copper alloys containing more than 5% Zn shall have a copper undercoating of at least 0.0001" or nickel undercoating of at least 0.000050". |
|
AMS 2408
ISO 2093
|
|
