hardness number


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Related to hardness number: Rockwell Hardness Number

hardness number

[′härd·nəs ‚nəm·bər]
(engineering)
A number representing the relative hardness of a mineral, metal, or other material as determined by any of more than 30 different hardness tests.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Preliminary Titanium Casting Results Maximum Vickers Alpha Case Layer Sample Hardness Number Depth {microns) Zirconia with sodium silicate 465.69 115 Alumina with sodium silicate 479.61 129 Ceramic with sodium silicate 587.8 237 Ceramic with furan resin 510.89 160 Table 3.
With increase in nanoclay loading from 0 to 5 wt%, Vicker's hardness number for corresponding composites enhanced.
The data were expressed in Knoop hardness number (kg/ [mm.sup.2]) to calculate the [DELTA]S, since there were two slightly but differing values (both with a good relation between CSMH and Transverse Microradiography) in the literature to convert the values in mineral volume percent [Featherstone et al, 1983; Kielbassa et al., 1999].
4 shows that greater Brinell hardness number represents greater hardness and which inturn shows the smaller area of indentation.
It is very hard, with a Brinell Hardness Number in the 300 to 380 range, but cutting can be very gummy.
I call hard any alloy with a Brinnell hardness number (BHN) of 15 or higher.
All the bullets are cast from lead alloy and then heat treated to Brinell Hardness Number of 18 to 20.
The Vickers hardness number of each specimen was thus evaluated before and after the conditioning procedure.
where [H.sub.B] = Brinell hardness number; F = maximum force (490.5 N); D = diameter of spherical head (10 mm); d = diameter of the indentation (mm).