VDA 621-421 (Constant Climate)

Vehicle Paint in Condensed Water Climates

This test standard is based upon test standard DIN 50 017. Please see elsewhere on this website for details of DIN 50 017.

DIN 50 014

Standard Climates

This standard specifies 3 standard climates for ambient air in terms of temperature, relative humidity, dewpoint temperature, pressure and air speed. These 3 climates are referred to by their temperature and relative humidity only, using the following abbreviations:

23/50 = +23C & 50%RH

20/65 = +20C & 65%RH

27/65 = +27C & 65%RH

In addition, each of these climates can have 1 of 3 different tolerances for the maximum deviation of temperature and humidity, using the following class numbers:

0.5 = +/-0.5C & +/-1.5%RH

1 = +/-1.0C & +/-3.0%RH

2 = +/-2.0C & +/-6.0%RH

The above abbreviations and class numbers appear after the main standard number as a suffix. So, for example, the full DIN reference for a standard climate of +23C +/- 1.0C & 50%RH +/-3.0%RH is DIN 50 014-23/50-1.

For further information on DIN standards visit; www.din.de

VG 95 210

Electronic & electrical component parts: Salt Spray (Corrosion)

Can be used to test the relative resistance to corrosion of coated and uncoated specimens, when exposed to a salt spray climate at an elevated temperature.

Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of neutral (pH 6.5 to 7.2) salt water solution, which falls-out on to the specimens at a rate of 0.5 to 3.0ml/80cm²/hour, in a chamber temperature of +35C. This climate is maintained under constant steady state conditions. The test duration is variable.

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DIN 50 021-CASS

Copper Chloride Acetic Acid Salt Spray Test

Can be used to test the relative resistance to corrosion of coatings, when exposed to a copper accelerated acetic acid salt spray climate at an elevated temperature.

Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of acidified (pH 3.1to 3.3) salt water solution, which falls-out on to the specimens at a rate of 1.0 to 2.0ml/80cm²/hour, in a chamber temperature of +50C. This climate is maintained under constant steady state conditions. The test duration is variable.

For further information on DIN standards visit; www.din.de

DIN 50 021-ESS

Acetic Acid Salt Spray Test

Can be used to test the relative resistance to corrosion of coatings when exposed to an acetic acid salt spray climate at an elevated temperature.

Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of acidified (pH 3.1to 3.3) salt water solution, which falls-out on to the specimens at a rate of 1.0 to 2.0ml/80cm²/hour, in a chamber temperature of +35C. This climate is maintained under constant steady state conditions. The test duration is variable.

For further information on DIN standards visit; www.din.de

DIN 50 021-SS

Neutral Salt Spray Test

Can be used to test the relative resistance to corrosion of coatings, when exposed to a salt spray climate at an elevated temperature.

Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of neutral (pH 6.5 to 7.2) salt water solution, which falls-out on to the specimens at a rate of 1.0 to 2.0ml/80cm²/hour, in a chamber temperature of +35C. This climate is maintained under constant steady state conditions. The test duration is variable.

For further information on DIN standards visit; www.din.de

VDA 621-421 (Changing Climate)

Vehicle Paint in Condensed Water Climates

This test standard is based upon test standard DIN 50 017. Please see elsewhere in this document for details of DIN 50 017.

DIN 50 017-KFW

Condensed Water Test Climates

Test specimens are placed in an enclosed chamber, and exposed to a changing climate that comprises of the following two part repeating cycle. 8 hours exposure in a heated, saturated mixture of air and water vapour, at a temperature of +40C and a relative humidity of 100%RH. This is followed by 16 hours exposure to room temperature (+18 to +28C according to DIN 50 014) and a relative humidity of less than 100%RH. The number of cycle repeats and therefore the test duration is variable.

For further information on DIN standards visit; www.din.de

DIN 50 017-KTW

Condensed Water Test Climates

Test specimens are placed in an enclosed chamber, and exposed to a changing climate that comprises of the following two part repeating cycle. 8 hours exposure in a heated, saturated mixture of air and water vapour, at a temperature of +40C and a relative humidity of 100%RH. This is followed by 16 hours exposure to room temperature (+18 to +28C according to DIN 50 014) whilst the relative humidity is maintained at 100%RH. The number of cycle repeats and therefore the test duration is variable.

For further information on DIN standards visit; www.din.de

DIN 50 017-KK

Condensed Water Test Climates

Test specimens are placed in an enclosed chamber, in which a climate is created that comprises of a heated, saturated mixture of air and water vapour, at a temperature of +40C and a relative humidity of 100%RH.This climate is maintained under constant steady state conditions. The test duration is variable.

For further information on DIN standards visit; www.din.de