Impact, Tensile and Hardness Testing of Metals

Before investing in a metal for use in a product or component part, it is worthwhile subjecting it to impact, tensile and hardness testing of metals. This ensures it will be suitable for the use for which it is intended, saving time, money and effort if it is not. Impact testing is usually carried out via the Charpy or Izod test, which measure the extent to which the metal will absorb energy when struck and fractured at high velocity. Tensile testing determines how the metal behaves when pulled. Hardness testing assesses the level of impact required to make a permanent indentation in its surface. Together, these tests give a good indication of a material’s toughness and strength; and therefore, whether it is fit for use. This includes whether it will meet the relevant national and international quality and safety standards. These tests are commonly commissioned by the metals industry, manufacturers for mechanical engineering and other components; in the construction industry; the automotive industry and so on.