Specification

AMS 2482, decoded and run.

The aerospace specification for PTFE-impregnated hard anodic coatings. A hard coat that carries its own dry lubricant, for parts that slide, seal, and cannot be greased.

SPEC AMS 2482BASE MIL-A-8625 TYPE IIIRESULT DRY-LUBE WEAR SURFACELEAD 3-4 DAYS

What the spec covers

Hard coat that lubricates itself.

AMS 2482 governs hard anodic coatings impregnated with polytetrafluoroethylene. The hard coat grows porous at the microscopic level; the impregnation step fills those pores with PTFE, so the finished surface is both wear-resistant and dry-lubricated. Engineers reach for the spec on valves, pistons, guides, actuators, and packaging machinery components, anywhere aluminum moves against another surface and wet lubricants are unwelcome.

Impregnation against coating

Why the PTFE lives inside, not on top.

Impregnated hard coat against a sprayed film
PROPERTY	AMS 2482 IMPREGNATION	SPRAYED PTFE FILM
Where the PTFE sits	Inside the oxide pores	A layer on the surface
Wear life	Wears with the hard coat itself	Wears off the surface first
Dimension change	The hard coat's, nothing more	Adds film thickness
Flaking risk	None; it is not a film	Possible at edges under load

SAE publishes the AMS specifications at sae.org/standards. The base coating requirements trace to MIL-A-8625 Type III; our 8625 page covers reading that callout.

Rows of dark finished parts laid out on the bench at AnoPRO

DARK FINISH WORK · THE BENCH

Where it runs

One shop, both steps.

The hard coat and the impregnation run in the same shop on the same clock, so an AMS 2482 part never makes a second vendor trip.

01PTFE impregnation serviceTHE FULL PROCESS

02Type III hard coatTHE BASE

03Packaging + automation workREPEAT RUNS

04Get a numberQUOTES BY EMAIL

Questions

AMS 2482, asked and answered

What is AMS 2482?

The SAE aerospace material specification for hard anodic coatings impregnated with PTFE: a Type III hard coat whose pores carry a dry lubricant.

Is AMS 2482 the same as Nituff or Tufram?

Those are trade names for proprietary PTFE-impregnated coatings. AMS 2482 is the open specification; a drawing citing it does not require a specific brand.

What does the finish look like?

Typically dark gray to black, uniform across the batch, with a dry, slick feel.

What lead time should I plan for?

3 to 4 days standard, same-day expedite available. The impregnation runs with the hard coat, not as a separate vendor trip.

Large dark anodized plate with a machined hole pattern

Next step

AMS 2482 without the vendor relay.

Hard coat and impregnation under one roof, quoted from your print.

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