DIN EN CHARPY NOTCHED BAR IMPACT TEST ON METALLIC MATERIALS VERIFICATION OF PENDULUM IMPACT TESTING MACHINES. BS EN Charpy Impact Test on Metallic Materials Part 2: Method for the Verification of Impact Testing Machines. Corresponding national standard in UK Italy Belgium Sweden ISO DIN 51 NFA BS 8?.
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BS EN Charpy i Metal products, mechanical tests, Charpy impact tests, test specimens, testing conditions.
English version Metallic materials — Charpy impact test — Part 1: Up-to-date lists and bibliographical 10045–2 concerning such national standards may be obtained on application to the CEN Central Secretariat or to any CEN member.
A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to CEN Central Secretariat has the same status as the official versions. It represents the first part of the general standard: Metallic materials — Impact test. This European Standard replaces the Euronorms: EUCharpy impact test for steel. EU, Impact testing using V-notch, beam type test piece. Contents Brief history Foreword 1 Object and field of application 2 References 3 Principle 4 Designations 5 Test pieces 6 Testing machine 7 Test requirements 8 Test report Annex A List of national standards corresponding to the reference European Standard in preparation Figure 1 — Charpy impact test Figure 2 — Configuration of test piece supports and anvils Table 1 — Designations Table 100452 — Tolerances on specified test piece dimensions Table 3 — Characteristics of testing 100045-2 Table 4 — National standards corresponding to proposed European Standard Page 2 2 3 3 3 3 3 3 5 5 8 6 7 3 4 1004-2 8 Foreword The standard EN 10 concerns metallic materials — Charpy impact test and comprises the following parts: Method of test; — Part 2: Dn of pendulum impact testing machines.
For certain particular metallic materials and applications, the Charpy impact test may be the subject of specific standards and particular requirements. In the centre of the length, there shall be a notch. Two types of notch are specified. If standard test pieces cannot be obtained from the material, a reduced section test piece, with a width of 7,5 mm or 5 mm see Table 2 shall be used, the notch being cut in one of the narrow faces. The test pieces shall be machined all over, except in the case of precision cast foundry test pieces in which the two faces parallel to the 100045-2 of symmetry of the notch can be unmachined.
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Comparison of results, however, is only of significance when made between test pieces of the same form and dimensions. The notch shall be carefully prepared so that no grooves, parallel to the base of the notch, are visible to the naked eye.
The test piece may be marked on any face not in contact with the supports or anvils and at a point at least 5 mm from the notch to avoid the effects of cold working due to marking.
General, tolerances and deviations.
EN 10Metallic materials — Charpy impact test — Part 2: The energy absorbed is determined in joules. This absorbed energy is a measure of the impact strength of the material.
Table 1 10045–2 Designations Reference see Figure 1 and Figure 2 Designation Unit 1 2 3 4 5 6 7 8 9 10 11 12 — Length of test piece Height of test piece Width of test piece Height below notch Angle of notch Radius of curvature of base of notch Distance between anvils Radius of anvils Angle of taper of each anvil Angle of taper of striker Radius of curvature of striker Width of striker Energy absorbed by breakage KU or KV mm e mm mm Degree mm mm mm Degree Degree mm mm Joule 6 Testing machine 6.
The values of the principal characteristics of the testing machine are specified in Table 3. Until this European Standard is published reference can be made to the corresponding national or international standards, a list of which is given in annex A.
The 100045-2 absorbed energy under these conditions shall be designated by the symbols: For tests at temperatures other than ambient, the test piece shall be immersed in the cooling or heating medium for sufficient time to ensure that the required temperature is reached throughout the test piece for example, 100445-2 least 10 min in a liquid medium or at least 30 enn in a gaseous medium. The test piece shall be broken within 5 seconds of the time of removal from the medium. The transfer device shall be designed and used in such a way that the temperature of the test piece is maintained within the temperature range permitted.
The test report shall state that the test piece was not broken by x J.
NOTE It is emphasized that only results on test pieces of identical 1045-2 should be compared. There is no general method for converting the results obtained by one test method into the values which would be obtained by another test method.
EN 10 ; b the type and dimensions of the test piece; c identification of the test piece grade, cast no The test piece shall lie on the supports in such a way that the tip of the striker hits the side opposite the notch of dn test piece see Figure 2. Ministry of Defence Society of British Aerospace Companies Limited Welding Institute The following bodies were also represented in the drafting of the standard, through subcommittees and panels: