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ISO/PWI 4545-3

Metallic materials — Knoop hardness test — Part 3: Calibration of reference blocks

General information

00.98     Oct 3, 2026

ISO

ISO/TC 164/SC 3

International Standard

Scope

ISO 4545-3:2017 specifies the method for the calibration of reference blocks to be used for the indirect verification of Knoop hardness testing machines as specified in ISO 4545‑2.
The method is applicable only for indentations with long diagonals ≥0,020 mm.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 4545-3:2017

NOW

ABANDON
ISO/PWI 4545-3
00.98 Proposal for new project abandoned
Oct 3, 2026