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.

ISO 6270-2 (CH)

Procedure for exposing test specimens in condensation-water atmospheres.

This test standard replaces and is similar to DIN 50 017*.

Test ‘CH’ (condensation atmosphere with constant high humidity) – requires constant conditions of +40°C and constant condensation humidity level of c.100%RH.

* The correlation between the above 6270-2 test method and the DIN 50 017 test methods, is:
6270-2 method ‘CH’ is equivalent to DIN 50 017 method ‘KK’.

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.

ISO 6270-2 (AHT)

Procedure for exposing test specimens in condensation-water atmospheres.

This test standard replaces and is similar to DIN 50 017*.

Test ‘AHT’ (condensation atmosphere with alternating humidity & air temperature) – requires changing temperature conditions of 40°C to 18-28°C, during which humidity changes from condensation level of c.100%RH towards ambient humidity level.

* The correlation between the above 6270-2 test method and the DIN 50 017 test methods, is:
6270-2 method ‘AHT’ is equivalent to DIN 50 017 method ‘KFW’.

ISO 6270-2 (AT)

Procedure for exposing test specimens in condensation-water atmospheres.

This test standard replaces and is similar to DIN 50 017*.

Test ‘AT’ (condensation atmosphere with alternating temperature only) – requires 40°C reducing to 18-28°C, while maintaining a condensation humidity level of c.100%RH.

* The correlation between the above 6270-2 test method and the DIN 50 017 test methods, is:
6270-2 method ‘AT’ is equivalent to DIN 50 017 method ‘KTW’.

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

ASTM D2247

Testing Water Resistance in 100% RH

Can be used to test the water resistance of coatings by exposing coated specimens to a high relative humidity at an elevated constant temperature, so that condensation forms upon them.

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 +38C 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 ASTM standards visit; www.astm.com

BS 3900 Part F2

Determination of Resistance to Humidity Under Condensation Conditions

Can be used to test the resistance of coated specimens to condensation conditions in a temperature cycling climate.

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 that cycles continuously between +42C and + 48C and a constant relative humidity of 100%RH. The time taken for each cycle from 42C to 48C and back to 42C shall be 60 minutes, with the heating and cooling times being approximately equal. The number of cycle repeats and therefore the test duration is variable.

For further information on British standards visit; www.bsigroup.com

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