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
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where [H.sub.v] is the hardness number, P is the applied load, and d is the diagonal length measured in micrometer.
Investigation on growth, structural, spectral, optical, and mechanical properties of an organic nonlinear optical material: morpholinium hydrogen tartrate
First the values of the Knoop hardness numbers (KHN), in kg/[mm.sup.2], at distances 10, 20, 30, 40, 50, 60, 80, 100, 200, and 300 um from the enamel surface were obtained.
Cross-sectional microhardness of bovine enamel subjected to three paediatric liquid oral medicines: an in vitro study
Table-4: Composition and Brinell hardness number (BHN).
Effect of Zirconium Nanoparticles on the Mechanical Properties of Light-Cured Resin Based Dental Composites
The mean Brinell hardness number for the cross section (5.8) of the eastern beech wood specimens studied is smaller than that of beech specimens in the Western Black Sea region (6.35).
Determination of the relationships between brinell and janka hardness of eastern beech (Fagus orientalis lipsky). (Fundamental Disciplines)
This means one part tin to 20 parts lead, with a Brinell Hardness Number (BHN) of about 12.
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Determination to find out Brinell hardness number (BHN):
Performance and trial evaluation of tungsten with titanium carbide by sintering and casting techniques
The corresponding Vickers Hardness Number (VHN) values were taken from specially designed tables supplied with Vickers Hardness machine.
CURING DEPTH OF BULK- FILL COMPOSITES- AN IN- VITRO STUDY
All samples of were subjected to Rockwell hardness tester for evaluating hardness using 60-gf load and were denoted as Rockwell hardness number (RHN).
To evaluate the effect of microwave disinfection on the hardness of heat cure and self cure acrylic resin: an in-vitro study
A customer required an 85 minimum Brinell Hardness number (BHN) for an aluminum component sand cast in A356.0 alloy and heat treated to a T6 temper.
Controlling hardness in aluminum castings
Influence of different ceramics on resin cement Knoop Hardness Number. Oper Dent.
Influence of the interposition of ceramic spacers on the degree of conversion and the hardness of resin cements

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