MIL-DTL-5541 chemical film is a conversion coating to stop aluminum from oxidizing. It is an excellent pretreatment for primer and paints to adhere to. Chemical film increases corrosion protection and adhesion on machinable aluminum alloys and aluminum casting alloys. Chemical film is a cost effective solution for corrosion and a paint base that in many cases eliminates the need for a primer or topcoats such as wet paint or powder coating. It is also used as an adhesion enhancing coating for bonding with adhesives and form in place gaskets.

There are 2 Types of MIL-DTL-5541 and two classes:

• MIL-DTL-5541 Type l Class 1
• MIL-DTL-5541 Type l Class 2
• MIL-DTL-5541 Type II Class 1
• MIL-DTL-5541 Type II Class 2

MIL-C-5541 is similar to MIL-DTL-5541 in Type and Class with the exception that MIL-C-5541 is always a hexavalent chromium coating. Other similar chemical film specifications are MIL-DTL-81706, ASTM B449, ASTM B921, AMS 2473 and AMS 2474.

Large Parts Capability-Rack and Barrel

Paramount has the capability to process large parts in Chemical Film:

• 9 ft long x 48 inches deep and 18 inches wide
• 6 ft long x 40 inches deep and 30 inches wide
• 5 ft long x 48 inches deep and 22 inches wide
• NADCAP certified
• ITAR registered
• ISO 9001 registered

Paramount Metal Finishing is a NADCAP certified metal finisher for all MIL-DTL-5541 which is required for most aerospace components, types and classes. Paramount is also ITAR registered and performs these processes on critical military electronics as a painting and powder base coating. Chemical Film is applied as well on ordnance components as a final finish. PMF applies these coating for many commercial purposes such as cast electronic housing, medical electronics cabinets and other hardware as a final finish or a paint base.

Paramount Metal Finishing is a specialist in chemical film and is an integrated coating applicator to ASTM, AMS and Military Specifications. We have capabilities to Plate, Anodize, Hard Coat Anodize, Sanchem, Conversion Coat, Paint, Powder Coat and Dry Film Lube in one location.