Early perforation corrosion of American manufactured vehicles was a limited localized phenomenon before the mid-1950s, but a short time after the introduction of unibody construction and sculptured styling in 1955, its occurrence became common throughout most of the United States. The use of deicing salts, which had approximately doubled between 1953 and 1956, was cited in some of the literature of the period as the probable cause. There was little mention of the reduction in sheet-metal thickness that accompanied the change to unibody construction. Anticorrosion measures were nominal in the period immediately following the adoption of unibody construction. The period before the mid-1960s was not typified by major advances in anticorrosion technology, but was a period of trial and error with much of the emphasis being placed on improved anticorrosion design practice. It is doubtful that the improvements made in this period (1958 to 1965) could have counter-acted the effect of the sevenfold increase in deicing salt use during 1953 to 1965 if deicing salts were the principal cause. Although it appears that the changes in manufacturing practice were the principle cause of widespread corrosion, the modifications in that practice since the change are producing significantly more corrosion-resistant vehicles. Low-priced, 1955 and 1956 vintage automobiles having unibody construction began to perforate within 6 months in severely corrosive environments. In late 1976, one motor company of Canada began warranting its cars for 36 months against perforation. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; Maps; Photos; References;
  • Pagination: pp 48-53
  • Monograph Title: Concrete, aggregates, marking materials, corrosion, and joint seals
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00183531
  • Record Type: Publication
  • ISBN: 0309026806
  • Files: TRIS, TRB
  • Created Date: Dec 12 1978 12:00AM