Corrosivity Characteristic

A material is considered to be "corrosive" if it meets any of the following criteria:

It has a pH of 2 or less.
It has a pH of 12.5 or more.
It can corrode steel at a rate of more than 6.35 millimeters per year at 130 degrees Fahrenheit.

For example, battery acid has a pH of 1.8, making it acidic enough to be corrosive. Chlorine is another corrosive chemical. It can eat through stainless steel, wood, and other materials.

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