The Steel Supply Company

Buyers Guide

Certification Terms

  • Tensile Strength: The maximum load per unit of original cross-sectional area obtained before rupture of a tensile specimen.
  • Yield Strength: The stress at which a material exhibits a specified deviation from proportionality of stress and strain. An offset of 0.2% is typically used for metals.
  • Elongation: The increase in length of a test specimen after rupture in a tensile test, expressed as a percentage of the original length.
  • Reduction of Area: The difference between the original cross-sectional area of a tensile specimen and that of the smallest area at the point of rupture.
  • Brinell Hardness Test: This test consists of forcing a ball of standard diameter into the specimen being tested under standard pressure, and then judging the hardness of the material by the amount of metal displaced.
  • Jominy End-Quench Test: This is a hardenability test in which a sample is heated to its proper quenching temperature and subjected to a spray of water at one end; a quenching method which provides a very rapid rate of cooling at the end sprayed, with progressively slower cooling all the way to the other end.
  • Charpy Test: A test made to determine the notched toughness, or impact strength, of a material. The test gives the energy required to break a standard notched specimen supported at the two ends.

NOTE: Not all of the above information is included on every product MTR.


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