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 document 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 107, Metallic and other inorganic coatings, Subcommittee SC 3, Electrodeposited coatings and related finishes.

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Introduction

This document was developed in response to worldwide demand for minimum specifications governing electrodeposited metallic coatings on plastic parts of automobiles traded internationally, wherein most commercial batches of coatings developed by suppliers lack specific and unified standards.

In the absence of a specific International Standard for the electrodeposition of automotive plastic parts, the requirements of different automobile manufacturers vary. The appearance and serviceability of the electrodeposited metallic coatings on automotive plastic parts depend on the condition of the basis material. Thus, the substrate plastics are expected to meet the requirements of service conditions. Formulating a unified standard covering the requirements, indicators and test methods for electroplating plastic parts benefits automobile host manufacturers and electroplating manufacturers.

Hence, this document provides detailed specifications and requirements concerning the appearance, stress and thermal cycling of electrodeposited metallic decorative coatings on automotive parts as well as the types of plastic materials.

1 Scope

This document specifies requirements for electrodeposited metallic decorative coatings for automobile plastic parts, including test requirements.

This document does not apply to such coatings on plastics to be used for aerospace, electronics and engineering fields other than automobile applications.

This document applies to automobile plastic parts. It differs from ISO 4525 , which is not applicable for engineering purposes.

2 Normative references

3 Terms and definitions

4 Information to be supplied by the purchaser to the electroplater

4.1 Essential information

4.2 Additional information

5 Coating system and its designation

6 Specification and test requirements

6.1 Appearance

6.2 Thickness

6.3 Potential difference

6.4 Micropores and microcracks

6.5 Adhesion test

6.6 Stress

6.7 Temperature resistance test

6.8 Accelerated corrosion testing

Bibliography