scope:

Purpose

This specification establishes the engineering requirements for producing an anodic coating on titanium and titanium alloys and the properties of the coating.

Application

These coatings have been used typically as a lubricating and anti-galling coating for elevated temperature forming, as an isolating film for increased resistance to galvanic corrosion, to provide improved wear resistance and as a pretreatment for the application of solid film lubricants, but usage is not limited to such applications.

Classification

Coatings are classified by end-product applications, as follows:

Type 1 As a coating for elevated-temperature forming.

Type 2 As an anti-galling coating without additional lubrication or as a pretreatment for improving adherence of film lubricants and in application where increased resistance to galvanic corrosion is required. Such coatings also are compatible with hypergolic propellants such as hydrazine-unsymmetrical-dimethylhydrazine and nitrogen tetroxide (see 8.4) and are electrically semi conductive.

Type 2 shall be furnished unless Type 1 is specified.

Safety - Hazardous Materials

While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.

Precautions

The use of hypergolic propellants as test media presents a special hazard. Test vessels should be contained in such a manner that breakage or inadvertent spills will be safely contained (see 8.4).