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Explain the brunell hardness testing

Jan 8th, 2015

Method for measuring the hardness of a material by pressing a ball of chrome or tungsten carbide (typically an inch or 0.4 inch diameter) against the surface of soft material under standard test conditions (usually between 300-3000 pounds of force for 5 to 30 seconds). The Brinell hardness is expressed in Hardness Number (BHN) calculated by dividing the load in pounds per area by the ball indentation measured in square millimeters. American Society for Testing and Materials standard BH test is ASTM E-10. For measurements up to 500 BHN Brinell hardness is equal to 0.96 times the Vickers hardness. Named after the Swedish metallurgical Johanan Brinnell (1849-1925) who invented it in 1900.

Jan 8th, 2015

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Jan 8th, 2015
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Jan 8th, 2015
Sep 22nd, 2017
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