2.3)CORROSION-Thickness shall always be tested,but resistance to corrosion is is required only for initial process qualification tests,or for new alloys and tempers notpreviously anodized in that facility.Corrosion testing shall be as per A.S.T.M.B117 or equivalent and no pitting shall be found within 120 hours of testing in a 5% neutral salt spray.*Product Spec.Section 3.10.