Statements (26)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
hardness test
|
| gptkbp:advantage |
can be used for all metals
requires optical measurement single scale for all materials slower than Rockwell test small indentation |
| gptkbp:alternativeTo |
gptkb:Brinell_hardness_test
gptkb:Rockwell_hardness_test |
| gptkbp:appliesLoad |
1 kgf to 100 kgf
|
| gptkbp:calculationFormula |
VHN = 1.854(F/D^2)
|
| gptkbp:developedBy |
gptkb:Robert_L._Smith
gptkb:George_E._Sandland |
| https://www.w3.org/2000/01/rdf-schema#label |
Vickers hardness test
|
| gptkbp:indenterAngle |
136 degrees
|
| gptkbp:introducedIn |
1921
|
| gptkbp:measures |
diagonal lengths of indentation
|
| gptkbp:namedAfter |
gptkb:Vickers_Ltd.
|
| gptkbp:standardizedBy |
gptkb:ASTM_E92
gptkb:ISO_6507 |
| gptkbp:suitableFor |
gptkb:ceramics
metals thin materials |
| gptkbp:usedFor |
measuring hardness of materials
|
| gptkbp:usesIndenter |
diamond pyramid indenter
|
| gptkbp:bfsParent |
gptkb:Vickers_Limited
|
| gptkbp:bfsLayer |
6
|