ISO 148-3:2016
Metallic materials — Charpy pendulum impact test — Part 3: Preparation and characterization of Charpy V-notch test pieces for indirect verification of pendulum impact machines
ISO 148-3:2016 specifies the requirements, preparation and methods for qualifying test pieces used for the indirect verification of pendulum impact testing machines in accordance with ISO 148‑2.
It specifies notched test pieces with nominal dimensions identical to those specified in ISO 148‑1; however, the tolerances are more stringent.
NOTE 1 The chemical composition or heat treatment, or both, are varied according to the energy level desired.
NOTE 2 Reference test pieces are qualified on reference pendulum impact testing machines which are also described in this part of ISO 148.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
3.1 Definitions pertaining to the machine
3.2 Definitions pertaining to energy
3.3 Definitions related to groups of test pieces
3.4 Definitions pertaining to test pieces
4 Symbols and abbreviated terms
5 Reference testing machine
5.1 Characteristics
5.1.1 General
5.1.2 Geometrical characteristics (see Table 2 and Figures 1 and 2)
5.1.3 Capacity
5.1.4 Hardness
5.1.5 Vibration
5.1.6 Energy-indicating mechanism
5.2 Verification of reference testing machine
6 Reference test pieces
6.1 General
6.2 Material
6.3 Dimensions
6.4 Marking
6.5 Qualification of a batch of reference test pieces
6.6 Reference test piece sets
7 Certificates for reference test pieces
8 Notes for using sets of reference test pieces
Annex A (informative) Uncertainty of the certified KV value of Charpy reference materials
Bibliography
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Related Information
Similar Standards
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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
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BS 131-5:1965
Notched bar tests, Determination of crystallinity
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BS 131-6:1998
Notched bar tests, Method for precision determination of Charpy V-notch impact energies for metals
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
3.1 Definitions pertaining to the machine
3.2 Definitions pertaining to energy
3.3 Definitions related to groups of test pieces
3.4 Definitions pertaining to test pieces
4 Symbols and abbreviated terms
5 Reference testing machine
5.1 Characteristics
5.1.1 General
5.1.2 Geometrical characteristics (see Table 2 and Figures 1 and 2)
5.1.3 Capacity
5.1.4 Hardness
5.1.5 Vibration
5.1.6 Energy-indicating mechanism
5.2 Verification of reference testing machine
6 Reference test pieces
6.1 General
6.2 Material
6.3 Dimensions
6.4 Marking
6.5 Qualification of a batch of reference test pieces
6.6 Reference test piece sets
7 Certificates for reference test pieces
8 Notes for using sets of reference test pieces
Annex A (informative) Uncertainty of the certified KV value of Charpy reference materials
Bibliography