 Posted: Sun 4:23, 18 Aug 2013 Post subject: louboutin Hardness, Hardness Tests And Hardness Co |
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The ideal method to arrive at the Hardness Value of hollister france a material is to measure the depth/ area of barbour the indentation produced hollister by an indenter of a definite shape when a specific force is applied on it for a specified period. This relationship between hardness and the size of the impression is usually established using three standard test methods, known as the Brinell, Vickers, hollister and Rockwell tests. Each barbour uk one of these test methods makes use of a definite scale (which is dependent on the applied load and indenter-shape) for calibration purpose. Thus, the barbour uk outlet The 2011 Kia Soul Continues To E Brinell Hardness Scale gauges the hardness of metals. Similarly, the Rockwell Hardness Scale measures different materials, right from soft bearing jordan pas cher femme metals to carbides and the Vicker's Scale measures the hardness of thin materials. The Hardness scales have another function ? individual scales allow conversions to other scales. Thus, hollister Debt Consolidation For Uk Homeowners according to the Hardness Conversion Table, barbour paris a Hardness value of 36 in the Rockwell (Diamond Brale) C Scale is www.vivid-host.com/barbour.htm equivalent to the following Hardness Values: 52 in the Rockwell (Diamond Brale) D Scale, 109 in the Rockwell (1/16" Bull) B Scale, 331 in the Brinell Scale jordan pas cher (using a 10 m/m Ball) and 354 in the Vickers Scale. Remember that all these hardness values have been arrived at by using varying weights. In actuality, there exists no relationship between the results of different hardness tests since most materials show different behaviors under different measurement tests and conditions. Use of different weights as well as of indenters (of various shapes and sizes) for the different test methods cause hardness conversions to be mathematically inaccurate. The homogeneity of the sample materials and their elastic properties further complicate the problem. Hardness conversion tables and charts, therefore, should be considered as www.msc-sahc.org/moncler.asp giving approximate equivalents, rather than precise mathematical equals. This is particularly true when conversion involves a method or scale, which can neither undertake the real test nor verify the test-result. : By: Robert Allen is a successful writer and publisher of Hardness Tester related issues, for more informative articles go to www.hardnesstesters.info |
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