Aluminum-manganese-tin alloys with improved pitting corrosion re

Details Aluminum-manganese-tin alloys with improved pitting corrosion re Aluminum-manganese-tin alloys with improved pitting corrosion re

1983-06-06

1985-02-12

Dean, R.

Alloys or metallic compositions

Aluminum base

420540, 420550, 420551, 420553, 148437, C22C 2100

Patent

active

044990502

ABSTRACT:
This invention relates to aluminum alloy compositions that have superior corrosion and pitting resistance. These compositions include small amounts of manganese and tin, with the major constituent being aluminum. Elements such as zinc, titanium, tantalum, and/or cobalt can also be added. The manganese content ranges from 0.20 to 2 weight percent and the tin content ranges from 0.20 to 1.5 weight percent. When included, the zinc content ranges from 0.03 to 0.5 weight percent, the titanium content ranges from 0.001 to 0.5 weight percent, the tantalum content ranges from 0.03 to 0.2 weight percent and the cobalt content ranges from 0.03 to 0.2 weight percent, and the boron content ranges from 0.03 to 0.1 weight percent.

REFERENCES:
patent: 4340649 (1982-07-01), Nara et al.

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