Environmental Engineering Reference
In-Depth Information
Figure 3.6
ASTM standard rating chart for evaluation of pitting corrosion.
of acquiring ultrasonic waveforms through the pit center, and analyzing wave-
forms for thickness determination.
The ratio of the maximum metal penetration to average metal penetration as
determined by weight loss method has been termed
pitting factor
, which is some-
times used to quantify pitting attack. A pitting factor of unity represents uniform
attack.
