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    Corrosion of Metal in Wood Products

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    A description is given of the source of metal corrosion products that cause wood deterioration around corroding metal in wet wood. Corrosion of isolated steel fasteners in wood and the formation of acid conditions around the corroding steel is explained in terms of “crevice corrosion.” The source of acid and alkaline conditions around corroding metals undergoing galvanic corrosion and the source of alkaline conditions around cathodically protected metal also are explained.

    Results of a 3-year corrosion test of eleven wood fastener materials in wood treated with copper-containing waterborne salt preservatives indicate that, when long service life is required under wet conditions, fastener materials that are cathodic with respect to copper should be chosen. The literature indicates that metals in contact with fire retardant-treated lumber and cellulose insulation under high moisture conditions also may be subject to corrosion.


    metal corrosion, corrosion damage, wood preservatives, wood products, cellulose, insulation, galvanic corrosion, fire resistant coatings, cathodic protection, building materials, durability

    Author Information:

    Baker, AJ
    Chemical engineer, Forest Products Laboratory, Madison, Wis.

    Committee/Subcommittee: G03.02

    DOI: 10.1520/STP36125S