Aerospace Airframe Equipment The great majority of paint systems for aircraft are specified either by the supplier or the customer. In the past, a great source of quality approvals was the MOD, or the major suppliers. This included Rolls Royce or British Aerospace.
As most of the aircraft is aluminium, protective schemes were developed accordingly.
In the 1950’s, the paint scheme DTD5555 and 5567 was originated, and was a 3 coat system comprising a 2 part acid based etch primer, a 2 part epoxy chromate primer, finished with a 2 part epoxy topcoat.
This was superceded by DTD 5580, which is the same as DTD 5555,except that the topcoat was 2 part polyurethane. The reason for this is that epoxy topcoat degrades in sunlight and gives a milky appearance known in the industry as “chalking.”
These systems have given good service over the years, the DTD 5555 and 5567 system often being preferred on internal components or areas, for reasons of heat resistance or chemical resistance. DTD 5580 has been used almost exclusively for many years on areas exposed externally.
All paint Def Stan's and DTD's have been reviewed and the majority withdrawn, or made “self approval”.
Aerospace Airframe Equipment
DTD 5555, 5567, and 5580
were withdrawn in the publication Standards In Defence News Serial 163, issued February 1998 this was reinforced in BSI news.
Major new aerospace type paints are reviewed by a BSI committee called ACE 44 and normally given code numbers BS – X for aerospace paints series.
The replacement products are as follows:- | |
2 pack etch primer | New standard BSX32 |
2 pack epoxy primer | New standard BSX33 |
2 pack polyurethane | New standard BSX34 IP6 Low VOC 2 pack Polyurethane to BSX34 B and MSRR1006 |
The epoxy topcoat system, DTD 5555 and 5567 because it is only mostly used in military applications, has been given a new approval, Def 80 – 161.
At the latest issue, BSX 33 and 34 had the latest government legislated solvent content incorporated. This is 350grams per litre for BSX 33 and 420grams per litre for BSX34. This complies with the latest government (and often international) legislation enshrined in Parliamentary Guidance Note, PG6 – 40 for manufacturers for aerospace.
Indestructible Paint now has available low VOC versions of BSX 33 (IP2-6362), BSX34 (the IP6 range), and Def 80 –161 (the IP2 range). We are constantly enhancing our range, and have fillers, low VOC acrylics, and many other aerospace coatings.
Indestructible make a wide variety of products that are used on
And associated equipment including: -
These include: -
On: -
Examples include:
For full information on any of the products discussed above please contact our sales office who would be only too pleased to explore your coating requirements.
Please contact our sales office for more information.
