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AS 1815.2:2024
[Current]Metallic materials - Rockwell hardness test, Part 2: Verification and calibration of testing machines and indenters (ISO 6508-2:2023, IDT)
AS 1815.2:2024 identically adopts ISO 6508 2:2023, which specifies two separate methods of verification of testing machines (direct and indirect) for determining Rockwell hardness in accordance with AS 1815.1, together with a method for verifying Rockwell hardness indenters
Published: 27/09/2024
Pages: 23
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General conditions
5 Direct verification of the testing machine
5.1 General
5.1.1
5.1.2
5.1.3
5.1.4
5.2 Calibration and verification of the test force
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.3 Calibration and verification of the depth-measuring system
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.4 Calibration and verification of the testing cycle
5.4.1
5.4.2
5.4.3
5.4.4
5.5 Calibration and verification of the machine hysteresis
5.5.1
5.5.2
5.5.3
6 Indirect verification of the testing machine
6.1 General
6.1.1
6.1.2
6.2 Procedure
6.2.1
6.2.2
6.3 Repeatability
6.3.1
6.3.2
6.4 Bias
6.4.1
6.4.2
6.5 Uncertainty of measurement
7 Calibration and verification of Rockwell hardness indenters
7.1 General
7.1.1
7.1.2
7.2 Diamond indenter
7.2.1 General
7.2.2 Direct calibration and verification of the diamond indenter
7.2.2.1
7.2.2.2
7.2.2.3
7.2.2.4
7.2.2.5
7.2.3 Indirect verification of diamond indenters
7.2.3.1
7.2.3.2
7.2.3.3
7.3 Ball indenter
7.3.1 Direct calibration and verification of the ball indenter
7.3.1.1
7.3.1.2
7.3.1.3
7.3.1.4
7.3.1.5
7.3.2 Indirect verification of the ball holder assembly
7.3.2.1
7.3.2.2
7.3.2.3
7.4 Marking
7.4.1
7.4.2
8 Intervals between direct and indirect calibrations and verifications
8.1
8.2
8.3
8.4
9 Verification report
Annex A
Annex B
B.1 General
B.2 Direct verification — Uncertainty of calibration of machine components
B.2.1 Uncertainty of calibration of the test force
B.2.2 Uncertainty of depth-measuring system
B.2.3 Verification of the indenter
B.2.4 Verification of the test cycle
B.3 Indirect verification — Uncertainty of calibration of testing machine
B.3.1 Uncertainty of the bias of the testing machine
B.3.2 Budget of uncertainty of indirect calibration/verification measurement (see Table B.8)
Bibliography
Cited references in this standard
[Current]
Metallic materials - Rockwell hardness test - Part 3: Calibration of reference blocks
[Current]
Metallic materials - Calibration of force-proving instruments used for the verification of uniaxial testing machines
Content history
[Current]
[Superseded]
DR AS 1815.2:2024
AS 1815.2-2007 Rec:2017
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