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Ultimate Strength: Also known as breaking strength, the ultimate strength of a material is the maximum stress it can withstand when subjected to an applied load before rupturing.
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Vickers Hardness: The Vickers Hardness test is used to quantify a material's ability to resist plastic deformation when force is applied from a standard source. The unit of hardness given by the test is known as Vickers Pyramid Number (HV) or Diamond Pyramid Hardness (DPH).
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Welding: To join (metals) by applying heat, sometimes with pressure and sometimes with an intermediate or filler metal with a high melting point.
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Yield Strength: Also known as engineering strength, yield strength is defined as the stress at which a predetermined amount of permanent deformation occurs. However, once the yield strength has been exceeded, the original numbers no longer apply due to a condition called necking which is a stretching or elongation of the material.
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