Metal Glossary

Designed to be a quick reference guide for customers, the Cashmores glossary provides definitions of the latest metal industry terms.

Metal Glossary

Designed to be a quick reference guide for customers, the Cashmores glossary provides definitions of the latest metal industry terms.
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  • Slitting
    The simultaneous cutting of a coil or wide strip into a number of narrower strips by means of rotary cutters.
  • Smelting
    Hall Heroult Process
    The main process used for the production of Aluminium metal whereby Alumina is dissolved in a salt bath of molten cryolite and subject to an electrolysis process. Often referred to as Smelting, this process uses very large amounts of electricity. Named after two scientists who developed the process independently of each other at around the same time.
  • Stop Mark
    A transverse peripheral ridge on a product arising from a stoppage during rolling, extrusion or drawing.
  • Strain Hardening
    Work Hardening
    The increase in strength and hardness with a general loss of ductility that results from cold working of a work-piece.
    Related Terms: Cold Working
  • Stress Corrosion
    This is the frequently rapid, sudden, failure of normally ductile alloys when experiencing tensile stresses in certain and specific corrosive environments. These stresses may be residual internal stresses or from external loading.
  • Stretcher Grip Marks
    Transverse indentations left by the gripper jaws of the stretching machine on the ends of a product.
  • Stretcher Levelling, Streching
    A term used to describe both the levelling of rolled materials and the straightening of extruded and drawn materials by imparting sufficient permanent extension to remove distortion.
  • Stretcher Strain Markings
    These are permanent surface distortions that can occur on stretching. They can appear as either flamboyant patterns or Lüders lines. Their onset and extent depends on the type of material and the degree of stretching.
    Related Terms: Lüders Lines, Stretcher Levelling, Streching
  • Super Annealing
    An annealing cycle for heat treatable alloys that utilises a slow, controlled, cooling rate to produce a structure with maximum ductility and the minimum tendency to natural ageing.
  • Surface Bloom
    A general term for any surface discolouration caused by thermal treatment or from exposure to moist atmospheres.
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