A-A-52514 Powder, Polyester-Aluminum (Metric)This CID covers a two-component powder containing polyester and alloyed aluminum particles mechanically distributed in a uniform mixture (40 polyester, 60 Si-Al). This powder is primarily intended for use as an abradable coating for use in environments up to 343 Deg. C.

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A-A-52514

TABLE III. Chemical composition of component A.

b. Component B. Component B shall be a completely aromatic polyester system.

2.1.4 Properties. The material shall meet the following properties requirements when applied (plasma sprayed) to iron, and titanium base alloys.

a. Bond strength. The bond strength of the plasma-sprayed material shall be not less than 7.6 megapascals (MPa).

b. Cup test. The amount of draw before spalling of the coating shall not be less than 1.52 millimeter (mm).

2.2 Unit containers. Unless otherwise specified (see 5.3), the unit containers shall be capable of holding the following quantities of powder: 0.5, 1.0, 2.5, 5.0, and 10.0 kilograms (kg). The containers shall be sealed moisture proof units and large enough to permit mixing the powder within before use. The containers shall be capable of protecting the powder against damage or contamination until it is ready to be used.

2.3 Identification markings. The identification markings shall be permanent and legible and shall include, as a minimum, the manufacturer’s CAGE code, part number, and lot number and the part or identification number (PIN) (see 5.3).

2.3.1 Labeling. Unit containers and packages shall be conspicuously labeled “CAUTION: Containers contain powder aluminum. Use approved respirator.”

2.3.2 Container. Each container shall be marked “Polyester-Aluminum Powder”.