An accelerated laboratory corrosion test to evaluate the corrosion resistance properties of vehicle body and component parts, used by the Volkswagen group of companies.

Introduction

This standard specifies a test method to determine the corrosion resistance of automotive bodies, assemblies and components. It is cyclic in nature, i.e.; test specimens are exposed to changing climates over time.

Test Conditions

The test method is composed of salt mist applications combined with drying and condensation humidity exposure. This cycle is repeated according to the following test method.

Method

Specimens being tested are exposed to a changing environment that is composed of three separate stages, the individual cycles comprise of

4 hours exposure to salt spray according to DIN 50 021-SS
4 hours exposure to an ambient climate according to DIN 50 014-23/50-2
16 hours exposure to a condensing water climate according to DIN 50 017-KK.

This 24 hour cycle is repeated for 5 days (nominally Monday to Friday). This is then followed by 48 hours (nominally a weekend) exposure to an ambient climate according to DIN 50 014-23/50-2, before the entire cycle repeats.

Typical Application

Developed by VW this test standard is intended to test the corrosion resistance properties of completely painted bodies, body panels, assemblies and components with different corrosion coatings.

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