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ASTM Selected Technical Papers
Galvanic and Pitting Corrosion—Field and Laboratory Studies
By
Robert Baboian
Robert Baboian
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W. D. France, Jr Jr
W. D. France, Jr Jr
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L. C. Rowe
L. C. Rowe
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J. F. Rynewicz
J. F. Rynewicz
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ISBN-10:
0-8031-6199-9
ISBN:
978-0-8031-6199-3
No. of Pages:
318
Publisher:
ASTM International
Publication date:
1976

The National Bureau of Standards data for pitting corrosion of ductile iron and steel pipe in four soils and gray cast iron and 3-in. Bessemer steel pipe in one soil have been treated by statistical methods to obtain the prediction intervals of estimated pit depths as a function of time. In the nonaggressive soils which are representative of most pipe installations, these ductile iron and gray iron pipe exhibited less corrosion than the companion steel pipe.

Prediction interval calculations are useful for quantitative analysis of corrosion data which has considerable inherent scatter and where service life is determined by the failure at relatively few points.

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