ASD-STAN/D 4/S 6 - Surface treatments for Metallic

This document defines the requirements for micro-arc oxidation of aluminium and aluminium alloys for corrosion protection, wear, erosion, dielectric and thermal properties.
The purpose of this document is to give design, quality and manufacturing requirements. It does not give complete in-house process instructions; these are given in the processors detailed process instructions.
This document relates only to micro-arc oxidation. It does not relate to finishing techniques, such as mechanical post treatment.

This document defines the requirements for hexavalent chromium free anodic electrodeposition of organic coatings on aluminium and aluminium alloys for corrosion protection of parts.
The purpose of this document is to give design, quality and manufacturing requirements. It does not give complete in-house process instructions; these are given in the processors detailed process instructions.

This document specifies the method for depositing cadmium layers according to the vacuum deposition process, for use in aerospace construction.
According to this process, cadmium metal is vaporized under vacuum and deposited directly on the base material with an interlayer. The coating produced in this way is ductile and electrically conductive.
This document is applicable whenever referenced.

This document specifies several chemical methods of passivation for corrosion resisting steels (austenitic, ferritic, martensitic and precipitation hardenable) and of decontamination for nickel or cobalt base alloys.

This document defines the requirements for a two-components, high corrosion inhibiting epoxy primer.
The coating shall be suitable for use on suitably prepared metallic substrates, chromic acid anodised, or conversion coated aluminium alloys and other suitably prepared substrates.

This document defines the requirements for a two-components, chromate and lead-free primer.
The coating shall be suitable for use on fibre reinforced composite materials, titanium and corrosion resistant steels and other suitably prepared corrosion resistant substrates.

This document specifies the requirements for a two-components flexible polyurethane topcoat to be applied over EN 4687 and/or EN 4688 primers mainly for exterior aerospace applications.
The primer and the finish tested to this document will be from the same manufacturer applied in accordance with (i.a.w.) their instructions/Table 1.

This document specifies the electrolytic cadmium plating of parts and fasteners in steel of tensile strength Rm (max.)  1 450 MPa, copper, copper alloys and nickel alloys, whose temperature in service does not exceed 235 °C.

This document describes the electrical contact resistance testing method applicable to conductive and non-conductive coatings applied on test specimens made of conductive materials (unless otherwise specified) for aerospace applications. An objective of this practice is to define and control many of the known variables in such a way that valid comparisons of the contact properties of materials can be made.
This test may be locally destructive depending on the process tested.

This document defines the requirements for hexavalent chromium free anodizing of aluminium and aluminium alloys for corrosion protection, bonding and painting.
Hard anodizing and plasma electrolytic anodizing (micro-arc oxidation) are not covered by this document.
The purpose of this document is to give design, quality and manufacturing requirements. It does not give complete in-house process instructions; these are given in the processors detailed process instructions.

This document specifies the method of test for evaluating the tendency of paints and varnishes towards sedimentation of their pigments.
The procedure describes a method where the pigmented paint is allowed to settle at a specified temperature and for a specified time.
The procedure is not applicable to products which possess a pot life inferior to the specified measuring time.

This document defines the nature of and the surface preparation method for test pieces in aluminium alloys intended for testing paints and varnishes used for aerospace applications.

This European Standard specifies the marking rules for aerospace products, semi-finished products, and ready to use parts, which need surface marking by discoloration using a laser source to identify the part and/or enhance its traceability.
This type of marking can be used on a wide range of materials (both metallic and non-metallic) and coatings (paints, varnishes…). It is in line with the part definition.

This European Standard specifies trivalent chromium based chemical conversion coatings for aluminium and aluminium alloys. It covers the application by bath but also by touch-up. It doesn’t give complete in house process instructions; these shall be given in the manufacturers detailed process instructions.

This document specifies the requirements for the hexavalent chromium free chemical conversion process of magnesium and magnesium alloys to ensure an adhesion base before bonding and painting.
The purpose of this document is to specify design, quality and manufacturing requirements. It does not specify complete in-house process instructions; these are specified in the processors detailed process instructions.

This document specifies the requirements for hexavalent chromium free anodizing of aluminium and aluminium alloys for corrosion protection, bonding and painting.
This document does not apply to hard anodizing and plasma electrolytic anodizing (micro-arc oxidation).
The purpose of this document is to give design, quality and manufacturing requirements. It does not give complete in-house process instructions; these are given in the processor's detailed process instructions.

This standard specifies several chemical methods of passivation for corrosion resisting steels (austenitic, ferritic, martensitic and precipitation hardenable) and of decontamination for nickel or cobalt base alloys.

This document defines the requirements for hexavalent chromium free anodic electrodeposition of organic coatings on aluminium and aluminium alloys for corrosion protection of parts.
The purpose of this standard is to give design, quality and manufacturing requirements. It doesn’t give complete in-house process instructions; these shall be given in the processor detailed process instructions.