Indicates the degree of corrosion or corrosion per unit of time that can be expected depending on the environment.
Another name for corrosivity class that was previously used is environmental class.
Water and soil categories.
Applies to buildings that are submerged in water or buried in soil.
One way to define different rust protection within a corrosivity class and how long it takes to reach rust level Ri 3.
A rating of how much of the surface is affected by rust.
ASTM or "American Society for Testing and Materials" is an American classification of the surface area affected by rust.