Page 161 - Fundamentals of Air Pollution

TABLE 9-1

Weight Loss of Metal Panels* after 20 Years' Exposure in Various Atmospheres (ca. 1930-1954) 6
Average loss in weight, %
Commercial Commercial
Commercial Commercial Brass lead zinc (99%
Exposure copper aluminum (85% Cu, Nickel (99.92% Pb, Zn, 0.85%
City classification (99.9% + Cu) (99% + Al) 15% Zn) (99% + Ni) 0.06% Cu) Pb)
Altoona, PA Industrial 6.1 8.5 25.2 1.8 30.7
New York, NY Industrial 6.4 3.4 8.7 16.6 — 25.1
La Jolla, CA Seacoast 5.4 2.6 1.3 0.6 2.1 6.9
Key West, FL Seacoast 2.4 — 2.5 0.5 — 2.9
State College, PA Rural 1.9 0.4 2.0 1.0 1.4 5.0
Phoenix, AZ Rural 0.6 0.3 0.5 0.2 0.4 0.8
3
Panels—9 x 12 x 0.035 in (22.86 x 30.48 x 0.089 cm).
* Data from H. R. Copson, Report of ASTM Subcommittee VI, of Committee B-3 on Atmospheric Corrosion, Am. Soc. Test Mater., Spec. Tech. Publ.
175, 1955. Used by permission of the American Society for Testing and Materials, Philadelphia.
Source: Yocom, J. E., and Upham, J. B., Effects on Economic Materials and Structures, in "Air Pollution," 3rd ed., Vol. I (A. C. Stern, ed.), p. 80.
Academic Press, New York, 1977.