INTERNATIONAL STANDARD
Metallicmaterials-Charpy pendulumimpacttest-
Part 1:Testmethod
Materiaux metalliques - Essai de flexion par choc sur eprouvetteCharpy-Partie 1: Methode d'essai
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Contents
Page
3.1 3.2 Definitions pertaining to energy. Definitions pertaining to test piece. 1 2
Test pieces.6.1 6.2 Notch geometry. General. 3 46.2.1 6.2.2 V-notch. U-notch. 4 49 Tolerance of the test pieces. Preparation of the test pieces.. 46.4 6.5 Marking of the test pieces. 4 4
Test equipment. 4
7.1 7.2 General. Installation and verification 4 57.3 Striker. 5
8 Test procedure. 5
8.1 General. 58.2 Friction measurement. Test temperature. 58.4 8.3 Specimen transfer 6 78.5 8.6 Exceeding machine capacity. Inplete fracture. 7 78.7 Post-fracture inspection.. Test piece jamming 88.8 8
Test report.9.1 Mandatory information 89.2 Optional information.. 8
Foreword
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SC 4 Toughness testing - Fracture (F) Pendulum (P) Tear (T). The mittee responsible for this document is ISO/TC 164 Mechonicol testing of metals Submittee
This third edition cancels and replaces the second edition (ISO 148-1:2009) which has been technicallyrevised.
ISO 148 consists of the following parts under the general title Metallic materials Charpy pendulumimpact test:
-Part 1: Test method
--Part 2: Verification of testing machines
penduium impact machines
Metallicmaterials-Charpypendulumimpacttest-
Part 1: Testmethod
1 Scope
This part of ISO 148 specifies the Charpy (V-notch and U-notch) pendulum impact test method forcover instrumented impact testing which is specified in ISO 14556. determining the energy absorbed in an impact test of metallic materials. This part of ISO 148 does not
Annexes B and C are based on ASTM E23 and are used with the permission of ASTM International 100Barr Harbor Drive P.0. Box C700 West Conshohocken PA 19428-2959 USA.
2Normative references
and are indispensable for the application of this document. For dated references only the edition cited applies. For undated references the latest edition of the referenced document (including anyamendments) applies.
ISO 148-2 Metallic materials - Charpy pendulum impact test - Part 2: Verification of testing machines
ISO 286-1 Geometrical product specifications (GPS)-ISO code system for tolerances on linear sizes- Part 1: Basis of tolerances deviations and fits
3 Terms and definitions
For the purposes of this document the following terms and definitions apply.
3.1 Definitions pertaining to energy
initial potentialenergy 3.1.1potential energypotential energy of the pendulum hammer prior to its release for the impact test as determined by Kpdirect verification
absorbed energy 3.1.2
friction energy required to break a test piece with a pendulum impact testing machine after correction for
Note 1 to entry: The letter V or U is used to indicate the notch geometry that is: KV or KU. The number 2 or 8 isused as a subscript to indicate the radius of the striker for example KV2
nominal energy nominal initial potential energy 3.1.3
auoeu ugsa oedu unnpuad au go anoeynueu au Aq pauisse uaua KN
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