DiFruscia Industries tin plates parts to MIL-T-10727 Type I and ASTM B545, under DFI’s AS9100D quality system. Tin plating is not a Nadcap special process.

What tin plating does

Tin plating deposits a soft, ductile layer of tin. It keeps parts solderable, gives low contact resistance for electrical connections and protects the base metal from corrosion. Tin is non-toxic, which also makes it a common choice for food-handling equipment. See Tin.

The specifications

Callout	What it covers
MIL-T-10727 Type I	Electrodeposited tin
ASTM B545	Electrodeposited coatings of tin. Classes set the minimum thickness

What to expect

Solderability and conductivity on copper alloys, steel and other metals.
Bright or matte, as you specify.
Barrel plated. Small parts tumble in a rotating, perforated barrel in the plating bath, for an even, economical finish on high volumes of fasteners, pins, contacts and other small components.

How to call it out on the drawing

Give the thickness and the finish, bright or matte.
Consider tin whiskers. Pure tin can grow conductive whiskers over time, and some aerospace and defense programs restrict it. Check your program’s requirements and ask about mitigation, such as a nickel underplate or a matte finish.
High-strength steels may need hydrogen embrittlement relief baking after plating. Put the part’s hardness on the PO.

Where it’s used

Electrical contacts, terminals and connectors, food equipment and small components.

Get a quote or a data sheet

Send the drawing and the spec callout to rfq@difruscia.com, or use Request a Quote. DFI’s technical data sheet for this process is available on request from Technical Specifications. Questions: 401.943.9900 or support@difruscia.com.

Values shown are typical results for reference only and are not specification limits. Results vary with alloy, part geometry, thickness and process parameters. Contact DFI to confirm the requirements for your application.

MIL-T-10727 Type I and ASTM B545 Tin Plating