Standards
Overview of Main Standards
Various types of test chambers are used to evaluate samples under different corrosion conditions. Corrosive environments are created inside the chamber using controlled temperature and humidity. The corrosion effect can be intensified with aggressive test solutions or pollutant gases.
The most important tests include Salt Spray Tests, Condensation Humidity Tests, and Pollutant Gas Tests Combined with High Humidity. These methods can be applied individually or in combination. A variety of national and international standards and norms are in effect to govern these testing methods.
Condensing Humidity Test
TS EN ISO 6270-2 (old DIN 50 017) – FIAT 50184 vb.
A condensation water environment is created on the test specimens at a temperature of 40°C. Demineralized water is loaded into the chamber and heated to evaporate. The relative humidity is approximately 100%. High humidity periods can be combined with ventilation or free cooling periods.
Suitable Equipments:
Constanzo K / KB 300
Constacon K / KB 400/1000/2500 M-TR
Constacon K / KB 400/1000/2500 M-SC
Constamatic KB 400/1000/2500 A-TR
Constamatic KB 400/1000/2500 A-SC
Salt Spray Test
ASTM B 117 – ASTM B 368 – TS EN ISO 9227 (old DIN 50021) – JIS Z 2371 – FIAT 50180
According to this standard, which describes “Salt Spray” (SS) tests, a salt solution is sprayed into a test chamber at a temperature of 35°C or 50°C.
To accelerate the corrosion reactions, acetic acid (ASS) or copper chloride (CASS) can be added to the NaCl solution.
A fine salt mist condenses on the surfaces of the test specimens and initiates corrosion. According to TS EN ISO 9227, in order to ensure a homogeneous distribution of the salt fog, the volume of a salt spray test chamber should not be less than 400 liters.
Suitable Equipments:
Constasal S 400/1000/2500 M-TR
Constasal S 400/1000/2000 M-SC
Constamatic S 400/1000/2500 A-TR
Constamatic S 400/1000/2000 A-SC
Corrosive Gas Test
TS 6610 EN ISO 3231 – TS 9258 EN ISO 6988 – DIN 50018
This test, also known as the Kesternich test, is a special type of condensation humidity test that involves the addition of sulfur dioxide. At the beginning of the test, sulfur dioxide is dosed into the test chamber. The gas combines with demineralized water to form sulfuric acid. The contaminated condensate triggers a chemical reaction similar to acid rain, resulting in accelerated corrosion.
Suitable Equipments:
Alternative Cycle Tests
VDA 621-415 – VW PV1210 – TS EN ISO 11997-1 – Daimler PPAP 3002(Filiform) – GM 9540 P – Renault D17 2028 ECC1 – Volvo 423-0014 vb.
Different manufacturers, organizations, and institutes have developed standards for various cyclic tests that combine different periods such as condensation humidity, salt spray, drying, or ventilation. The aim is to create conditions that closely simulate real environmental stresses.
Suitable Equipments:
Constamatic SKB 400/1000/2500 A-TR
Constamatic SKB 400/1000/2000 A-SC
Constamatic SKBW 400/1000/2500 A-TR
Constamatic SKBW 400/1000/2000 A-SC
Constamatic SKBWF 1000/2500 A-TR
Constamatic SKBWF 1000/2000 A-SC
Constamatic SKBWFR 1000 A-TR