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INTERNATIONAL STANDARD ISO 14577-2

Metallic materials — Instrumented indentation test 

for hardness and materials parameters — 

Part 2: 

Verification and calibration of testing machines

ISO 14577 consists of the following parts, under the general title 

Instrumented indentation test for hardness and materials parameters

ISO 14577-1:2015, Metallic materials — Instrumented indentation test 

for hardness and materials parameters — Part 1: Test method

ISO 14577-2:2015, Metallic materials — Instrumented indentation test 

for hardness and materials parameters — Part 2: Verification and calibration of testing machines

ISO 14577-3:2015, Metallic materials — Instrumented indentation test for hardness and materials parameters — Part 3: Calibration of reference blocks

ISO 14577-4:2016, Metallic materials — Instrumented indentation test for hardness and materials parameters — Part 4:Test method for metallic and non-metallic coatings

Contents

Foreword

Introduction

1 Scope

2 Normative References

3 General Conditions

4 Direct verification and calibration

5 Indirect verification

6 Intervals between calibrations and verifications

7 Verification report/Calibration certificate

Annex A (informative) Example of an indenter holder

Annex B (normative) Procedures for determination of indenter area function 

Annex C (informative) Examples for the documentation of the results of indirect verification

Annex D (normative) Machine compliance calibration procedure

1. Scope

This part of ISO 14577 specifies the method of verification and calibration of testing machines for carrying out the instrumented indentation test in accordance with ISO 14577-1:2015.

It describes a direct verification method for checking the main functions of the testing machine and an indirect verification method suitable for the determination of the repeatability of the testing machine. There is a requirement that the indirect method be used in addition to the direct method and for the periodic routine checking of the testing machine in service.

It is a requirement that the indirect method of verification of the testing machine be carried out independently for each test method.

This part of ISO 14577 is also applicable for transportable testing machines.

2. Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 376, Metallic materials — Calibration of force-proving instruments used for the verification of uniaxial testing machines

ISO 3878, Hardmetals — Vickers hardness test

ISO 14577-1:2015, Metallic materials — Instrumented indentation test for hardness and materials parameters — Part 1: Test method

ISO 14577-3, Metallic materials — Instrumented indentation test for hardness and materials parameters — Part 3: Calibration of reference blocks