Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

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This document was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 18, Materials.

This second edition cancels and replaces the first edition (ISO 8078:1984), which has been technically revised.

The main changes are as follows:

— updated the normative references in Clause 2;
— changed water quality requirements, for example, the total dissolved solids has been changed from 12 mg/kg to 10 mg/kg (see 4.3.2);
— added a hexavalent chromium free sealing solution (see 4.3.7);
— added drying and rework (see 4.3.8 and 4.3.9);
— made the requirements of process control tests and process qualification tests clearer (see 5.3 and 5.4).

Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.