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  2. Sheet metal - Wikipedia

    en.wikipedia.org/wiki/Sheet_metal

    Sheet metal can be cut in various ways, from hand tools called tin snips up to very large powered shears. With the advances in technology, sheet metal cutting has turned to computers for precise cutting. Many sheet metal cutting operations are based on computer numerically controlled (CNC) laser cutting or multi-tool CNC punch press.

  3. List of commercially available roofing materials - Wikipedia

    en.wikipedia.org/wiki/List_of_commercially...

    Standing-seam metal roof with concealed fasteners. Mechanically seamed metal with concealed fasteners contains sealant in seams for use on very low sloped roofs, suitable for roofs of low pitch such as 0.5/12 to 3/12 pitch. Flat-seam metal with or without soldered seams. Steel coated with a coloured alloy of zinc and aluminium. Stone-coated ...

  4. List of named alloys - Wikipedia

    en.wikipedia.org/wiki/List_of_named_alloys

    This is a list of named alloys grouped alphabetically by the metal with the highest percentage. Within these headings, the alloys are also grouped alphabetically. Within these headings, the alloys are also grouped alphabetically.

  5. Steel grades - Wikipedia

    en.wikipedia.org/wiki/Steel_grades

    non-alloy and alloy electrical steel sheet/strip in the semi-processed state N " for normal grain oriented products P: 1.7 T @50 Hz high permeability grain oriented S"

  6. Hardnesses of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Hardnesses_of_the_elements...

    This page was last edited on 16 November 2024, at 12:16 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  7. Architectural metals - Wikipedia

    en.wikipedia.org/wiki/Architectural_metals

    However, persons who worked with sheet metal were called tinsmiths, so the term could have sprung from this title. [3] Tinplate was a type of architectural material consisting of sheet iron or steel coated with tin. “Tin roofs,” a type of tinplate, was originally used for armor but eventually as a roofing material.