scope:

Scope and field of application

This International Standard specifies the requirements for the surface treatment of parts made from martensitic, precipitation hardening and maraging stainless steels (for example AISI 400 series, 17-7PH, 17-4PH, 15-5PH, AM350, AM355, PH15-7Mo, PH13-8Mo, Custom 450 and 455). It provides practical methods for removing contaminants and for obtaining suitable corrosion resistance for aerospace applications.

The surface treatments required during manufacture are mandatory for all surfaces of all parts. The final surface treatments are mandatory except when a surface coating (for example paint, plating) is specified. When such a coating is specified for only a portion of the surfaces of a part, the uncoated portions shall be treated in accordance with the final surface treatment requirements of this International Standard.

It is the responsibility of the processor to determine, by analysis or history, the condition of the surface prior to treat-ment to assure conformance to the requirements of this International Standard.