ISO 4545:1993
Withdrawn
View Superseded by
Metallic materials — Hardness test — Knoop test
Hardcopy , PDF
English, French
03-18-1993
11-02-2025
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.
| Committee |
ISO/TC 164/SC 3
|
| DocumentType |
Standard
|
| Pages |
4
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| SupersededBy |
| Standards | Relationship |
| NBN ISO 4545 : 1997 | Identical |
A newer version of this standard is available.
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