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About This Item


Document History

  1. AS U33-1956


    45/55 ton, 12 per cent chromium steel (corrosion-resisting) (limiting ruling section 6 in.)

    • Most Recent
  2. AS (E)D522-1941

    Specification for aircraft material (emergency series) high chromium steel (non-corrosive) (46-52 tons per sq. in.)

    • Historical Version