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in the Battle Against
Anti-corrosion processes, developed by Martin, conquer destructive action of salt air and sea.

ACCURATELY controlled heat treating of aluminum alloys. Anodizing to coat the metal with a smooth, protective film which slightly absorbs and thus firmly holds bituminous paint. Spraying or rubbing each separate part with bituminous paint immediately after anodizing. Spraying with further special finishes after assembly. Covering with pure aluminum foil all parts in contact with wing fabric. 

These are some of the anti-corrosion processes which are standard practice in the Martin plan. And these processes help explain why Martin all-metal planes are so thoroughly corrosion-proof, so economical to maintain.

Nowhere else in the industry will you find such highly developed anti-corrosion processes, and such extensive equipment for their use, as in the Martin plant. Nowhere else in the industry can aircraft of equal quality be produced in quantity at lower cost.

Builders of Dependable Aircraft Since 1909

[[Image]] Martin U.S.A

[[On right half of page]]


Above:"Not a sign of corrosion was found." That is what Naval inspectors reported after carefully inspecting Martin Seaplanes which had been in Southern waters with the Fleet for two years.

Left: The anodic film is deposited on all treated surfaces, protecting the inside of long tubes, and the corners, crevices and edges of irregularly shaped parts.


Above: To prevent corrosion at points where parts are joined, each individual part is given a separate cost of bituminous paint immediately after anodizing and before assembly.

Left: Special anti-corrosion finishes are applied after assembly. The large tunnel-type spray booths will accommodate even a completely assembled 100-foot hull.
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