hardness number


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Related to hardness number: Rockwell Hardness Number

hardness number

A number on a calibrated scale indicating the relative hardness as determined by a particular system of testing, e.g., Knoop, Mohs, Rockwell, Vickers hardness tests. A steel ball or diamond point is applied with a known variable load for a determined period of time to produce an indent whose depth or diameter can be measured.
See also: number
References in periodicals archive ?
Group V Saline (Control) Table 2 : List of Mean & Standard Deviation of VICKERS HARDNESS NUMBER of the test groups Group Before After Treatment Treatment I.
0 mm thickness on the DC and Knoop hardness number (KHN) of light- and dual-cured resin cements, and
Alloys are given a hardness number known as BHN, or Brinnell Hardness Number.
Further, the important aspect of the microhardness testing of polymers at low loads is that whether the hardness number is dependent or independent of the load [10].
The result obtained that the sample 1 contain 90:5:5 have the higher hardness number than any other composition.
That gives us the same approximate Brinell Hardness Number (BHN) as our castings when we check the end of the test bar.
45 Colt bullets must be hard (Brinell hardness number 12 or above) then I size them .
The Rockwell hardness number is a measure of the non-recoverable indentation after a heavy load of 588N for a period of 15s, and subsequently reduced to a minor load of 98N for another duration of 15 s.
Hardness number is changed in each layer of produced FGM according to the percentage of the harder alumina content.