Country/Industry/Company of Origin: Japan

JIS H 8502 M5

Methods of corrosion resistance test for metallic coatings

Can be used to test the relative resistance to corrosion of electro-plated coatings, when exposed to different corrosive atmospheres, as follows:

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.

This test is also referred to as an NSS test

Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of salt water solution, acidified (pH 3.1to 3.3) by the addition of acetic acid, 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.

This test is also referred to as an ASS test

Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of salt water solution, with copper chloride added and acidified (pH 3.0 to 3.2) by the addition of acetic acid, 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.

This test is also referred to as a CASS test

Test specimens are coated with Corrodkote mud, which is applied to the surface of the samples and allowed to dry. Then the samples are placed in a controlled climate of +38C and 80 to 90%RH (non condensing) and allowed to stand for 16 hours (1 cycle). For further cycles the samples are cleaned and fresh Corrodkote is applied.

Test specimens are exposed to a controlled climate of +40C and 90%RH and SO2 gas in a concentration of either 25ppm or 1000ppm.

Chamber volumes of less than 200 Litres are not permitted by JIS H 8502.

For further information on Japanese JIS standards visit; www.jsa.or.jp/default_english.asp

JIS H 8502 M4

Methods of corrosion resistance test for metallic coatings

JIS H 8502 M4

Can be used to test the relative resistance to corrosion of electro-plated coatings, when exposed to different corrosive atmospheres, as follows:

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.

This test is also referred to as an NSS test

Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of salt water solution, acidified (pH 3.1to 3.3) by the addition of acetic acid, 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.

This test is also referred to as an ASS test

Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of salt water solution, with copper chloride added and acidified (pH 3.0 to 3.2) by the addition of acetic acid, 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.

This test is also referred to as a CASS test

Test specimens are coated with Corrodkote mud, which is applied to the surface of the samples and allowed to dry. Then the samples are placed in a controlled climate of +38C and 80 to 90%RH (non condensing) and allowed to stand for 16 hours (1 cycle). For further cycles the samples are cleaned and fresh Corrodkote is applied.

Test specimens are exposed to a controlled climate of +40C and 90%RH and SO2 gas in a concentration of either 25ppm or 1000ppm.

Chamber volumes of less than 200 Litres are not permitted by JIS H 8502.

For further information on Japanese JIS standards visit; www.jsa.or.jp/default_english.asp

CCT-1

This is an accelerated laboratory corrosion test method that can be used to determine the corrosion resistance of automotive assemblies and components. It is cyclic in nature, i.e.; test specimens are exposed to changing climates over time.

Test specimens are placed in an enclosed chamber and exposed to a changing climate that comprises of the following 3 part repeating cycle. 4.0 hours exposure 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 is followed by 2.0 hours of air drying in a climate of 20 to 30%RH at +60C. This is followed by 2.0 hours exposure to a condensing water climate (wetting) of 95 to 100%RH at +50C. The number of cycle repeats and therefore the test duration is variable.

The maximum transition times between each part of the test cycle are also specified as follows:

From salt spraying to air drying within 30 minutes.

From air drying to wetting within 15 minutes.

From wetting to salt spraying within 30 minutes.

JIS Z 2371

Methods of neutral salt spray testing

Can be used to test the relative resistance to corrosion of coated and uncoated metallic 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 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.

Chamber volumes of less than 200 Litres are not permitted by this test standard.

This test is also referred to as an NSS test.

For further information on Japanese JIS standards visit; www.jsa.or.jp/default_english.asp

JIS H 8502 M3

Methods of corrosion resistance test for metallic coatings

Can be used to test the relative resistance to corrosion of electro-plated coatings, when exposed to different corrosive atmospheres, as follows:

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.

This test is also referred to as an NSS test

Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of salt water solution, acidified (pH 3.1to 3.3) by the addition of acetic acid, 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.

This test is also referred to as an ASS test

Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of salt water solution, with copper chloride added and acidified (pH 3.0 to 3.2) by the addition of acetic acid, 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.

This test is also referred to as a CASS test

Test specimens are coated with Corrodkote mud, which is applied to the surface of the samples and allowed to dry. Then the samples are placed in a controlled climate of +38C and 80 to 90%RH (non condensing) and allowed to stand for 16 hours (1 cycle). For further cycles the samples are cleaned and fresh Corrodkote is applied.

Test specimens are exposed to a controlled climate of +40C and 90%RH and SO2 gas in a concentration of either 25ppm or 1000ppm.

Chamber volumes of less than 200 Litres are not permitted by JIS H 8502.

For further information on Japanese JIS standards visit; www.jsa.or.jp/default_english.asp

JIS H 8502 M1

Methods of corrosion resistance test for metallic coatings

Can be used to test the relative resistance to corrosion of electro-plated coatings, when exposed to different corrosive atmospheres, as follows:

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.

This test is also referred to as an NSS test

Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of salt water solution, acidified (pH 3.1to 3.3) by the addition of acetic acid, 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.

This test is also referred to as an ASS test

Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of salt water solution, with copper chloride added and acidified (pH 3.0 to 3.2) by the addition of acetic acid, 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.

This test is also referred to as a CASS test

Test specimens are coated with Corrodkote mud, which is applied to the surface of the samples and allowed to dry. Then the samples are placed in a controlled climate of +38C and 80 to 90%RH (non condensing) and allowed to stand for 16 hours (1 cycle). For further cycles the samples are cleaned and fresh Corrodkote is applied.

Test specimens are exposed to a controlled climate of +40C and 90%RH and SO2 gas in a concentration of either 25ppm or 1000ppm.

Chamber volumes of less than 200 Litres are not permitted by JIS H 8502.

For further information on Japanese JIS standards visit; www.jsa.or.jp/default_english.asp

JIS H 8502 M2

Methods of corrosion resistance test for metallic coatings

Can be used to test the relative resistance to corrosion of electro-plated coatings, when exposed to different corrosive atmospheres, as follows:

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.

This test is also referred to as an NSS test

Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of salt water solution, acidified (pH 3.1to 3.3) by the addition of acetic acid, 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.

This test is also referred to as an ASS test

Test specimens are placed in an enclosed chamber and exposed to a continuous indirect spray of salt water solution, with copper chloride added and acidified (pH 3.0 to 3.2) by the addition of acetic acid, 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.

This test is also referred to as a CASS test

Test specimens are coated with Corrodkote mud, which is applied to the surface of the samples and allowed to dry. Then the samples are placed in a controlled climate of +38C and 80 to 90%RH (non condensing) and allowed to stand for 16 hours (1 cycle). For further cycles the samples are cleaned and fresh Corrodkote is applied.

Test specimens are exposed to a controlled climate of +40C and 90%RH and SO2 gas in a concentration of either 25ppm or 1000ppm.

Chamber volumes of less than 200 Litres are not permitted by JIS H 8502.

For further information on Japanese JIS standards visit; www.jsa.or.jp/default_english.asp