Hot-dip aluminum-zinc coating method and product

Details Hot-dip aluminum-zinc coating method and product Hot-dip aluminum-zinc coating method and product

1982-11-04

1984-06-26

Childs, Sadie L.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

427399, 427406, 427433, 427436, 428654, 428926, 428939, B32B 1510, C23C 108

Patent

active

044566638

ABSTRACT:
Hot-dip coated steel articles having a coating containing about 55% aluminum, 43% zinc, 2% silicon, are known to exhibit an optimum combination of general corrosion resistance, more durable than zinc coatings; while providing more galvanic protection to cut edges and areas of mechanical damage than hot-dip aluminum coatings. It has now been found that coatings containing 12 to 24% zinc, up to 4% silicon, balance aluminum, provide galvanic protection equal to or superior to such known coatings, while providing enhanced general corrosion resistance, approaching that of aluminum coatings.

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patent: 4171392 (1979-10-01), Sievert et al.
Zoccola et al., ASTM STP 646, S. K. Coburn Ed. American Society for Testing & Materials, 1978, pp. 165-184.
Gittings et al., Trans. ASM, 1951, vol. 4, pp. 587-610.

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