Norm

ASTM C1326-13

Standard Test Method for Knoop Indentation Hardness of Advanced Ceramics

54,27

Over deze norm

Status Definitief
Aantal pagina's 9
Commissie C28.01
Gepubliceerd op 01-08-2013
Taal Engels

1.1 This test method covers the determination of the Knoop indentation hardness of advanced ceramics. In this test, a pointed, rhombic base, pyramidal diamond indenter of prescribed shape is pressed into the surface of a ceramic with a predetermined force to produce a relatively small, permanent indentation. The surface projection of the long diagonal of the permanent indentation is measured using a light microscope. The length of the long diagonal and the applied force are used to calculate the Knoop hardness which represents the material’s resistance to penetration by the Knoop indenter.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 Units—When Knoop and Vickers hardness tests were developed, the force levels were specified in units of grams-force (gf) and kilograms-force (kgf). This standard specifies the units of force and length in the International System of Units (SI); that is, force in newtons (N) and length in mm or μm. However, because of the historical precedent and continued common usage, force values in gf and kgf units are occasionally provided for information. This test method specifies that Knoop hardness be reported either in units of GPa or as a dimensionless Knoop hardness number.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Details

ICS-code 19.060
81.060.99
Nederlandse titel Standard Test Method for Knoop Indentation Hardness of Advanced Ceramics
Engelse titel Standard Test Method for Knoop Indentation Hardness of Advanced Ceramics

Winkelwagen

Subtotaal:

Ga naar winkelwagen