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Dictionary of Industry Terms

  • B & O :
    Blued and Oiled

  • BASIC STEEL :
    Steel melted in a furnace with a basic bottom and lining and under a slag having a basic reaction.

  • BESSEMER PROCESS :
    A steel making process in which air is blown through the molten iron so that the impurities are thus removed by oxidation.

  • BILLET :
    A rectangular semi-finished rolled ingot of from 4 to 36 square inches in cross section, with a width less than twice the thickness.

  • BINARY ALLOY :
    An alloy having two principal elements.

  • BLACK ANNEALING :
    A method of annealing sheets or other products, used when it is not important that the product be free of scale discoloration.

  • BLUE ANNEALING :
    A method of annealing sheets which gives them a bluish-black color. The heavier gauges are allowed to cool slowly after rolling: the lighter ones are passed singly through an open furnace to bring them to the proper annealing temperature.

  • BLUE BRITTLENESS :
    Brittleness occurring in steel at 413 to 700°F or after cooling when worked at these temperatures.

  • BOX ANNEALING :
    Annealing steel by heating in a closed metal box which protects it from oxidation.

  • BRIGHT ANNEALING :
    Annealing clone in closed containers with a reducing atmosphere which prevents the oxidation and discolora­tion of the surface.
 
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