Definitions for corrosion classification

As an aid in finding what requirements should be made for pre-treatment, we can define different corrosion classification:

Corrosion Class 0

• Indoors with relative humidity over 60%
• Very little corrosion risk (aggressivity)

Corrosion Class 2

• Indoors with fluctuating temperature and humidity. Outdoors in inland climates, far from sea and industry.
• Medium corrosion risk (aggressivity)

Corrosion Class 4

• Constant, high humidity. Near industry which manufactures or utilizes chemicals.
• Very large corrosion risk (aggressivity)