ISO 4545:1993
Metallic materials — Hardness test — Knoop test
Specifies the method of Knoop hardness test covering test forces up to and including 9,807 N. The principle of the method is forcing a diamond indenter, in the form of a rhombic-based pyramid with specified angles between opposite faces at the vertex, into the surface of a test piece and measuring the long diagonal of the indentation left in the surface after removal of the test force. The Knoop hardness is proportional to the quotient obtained by dividing the test force by the projected area of the indentation.
| Get this standard | Prices exclude GST | |
|---|---|---|
| PDF ( Single user document) |
$126.00 NZD
|
|
| Networkable PDF |
Price varies
|
Keep me up-to-date
Sign up to receive updates when there are changes to this standard
Related Information
Similar Standards
-
BS 131-1:1961
Methods for notched bar tests, The Izod impact test on metals
-
BS 131-4:1972
Notched bar tests, Calibration of pendulum impact testing machines for metals
-
BS 131-5:1965
Notched bar tests, Determination of crystallinity
-
BS 131-6:1998
Notched bar tests, Method for precision determination of Charpy V-notch impact energies for metals