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A variety of hardness-testing methods are available, including the Vickers, Brinell, Rockwell, Meyer and Leeb tests. Although it is impossible in many cases to give an exact conversion, it is possible to give an approximate material-specific comparison table for steels .
Download as PDF; Printable version; In other projects ... Vickers hardness (MPa) [1] Brinell hardness (MPa) [1] ... Vickers hardness test; Brinell scale This page was ...
Vickers hardness numbers are reported as xxxHVyy, e.g. 440HV30, or xxxHVyy/zz if duration of force differs from 10 s to 15 s, e.g. 440HV30/20, where: 440 is the hardness number, HV names the hardness scale (Vickers), 30 indicates the load used in kgf. 20 indicates the loading time if it differs from 10 s to 15 s
It determines hardness through the scale of penetration of an indenter, loaded on a material test-piece. It is one of several definitions of hardness in materials science. The hardness scale is expressed as the Brinell Hardness Number (BHN or BH) and was named for Johan August Brinell, who developed the method in the early 20th century.
Scratch hardness. The Mohs scale of mineral hardness; The Vickers hardness test; The Brinell scale; The Janka hardness test; The Rockwell scale; The Durometer scale; The Barcol scale; The Leeb rebound hardness scale; The Rosiwal scale; The Meyer hardness test; The Knoop hardness test
Whereas the Vickers scale is widely accepted as a most common test, [11] there remain controversies on the weight load to be applied during the test. This is because Vickers hardness values are load-dependent. An indent made with 0.5N will indicate a higher hardness value than an indent made with 50N.
This is similar to using various indenter geometries and test loads in Rockwell (e.g. HRA, HRB, HRC), Brinell and Vickers. Equotip hardness results in HLx are often converted to the traditional hardness scales HRC, HB and HV mainly for convention reasons between supplier and customer. [5] [6]
A graph of Vickers 150kg versus the other scales makes sense. Vickers 150kg scale covers a very large range of hardness. The Mohs scale of hardness is so different from the metals hardness scale, that comparison is difficult. ASTM E18 for rockwell, ASTM E10 for Brinell define the limits of rockwell and brinell testing.
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