BS EN ISO 5178-2011 pdf download.Destructive tests on welds in metallic materials – Longitudinal tensile test on weld metal in fusion welded joints (ISO 5178:2001).
This International Standard specifies the sizes of test specimens and the test procedure for carrying out longitudinal tensile tests on cylindrical test specimens in order to determine the mechanical properties of weld metal in a fusion welded joint.
This International Standard applies to metallic materials in all forms of product with joints made by any fusion welding process, having joint sizes that are sufficient to obtain cylindrical test specimens with dimensions in accordance with ISO 6892.
Unless specified otherwise for specific points in this International Standard, the general principles of ISO 6892 apply.
2 Normative reference
The following normative document contains provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, this publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards.
ISO 6892, Metallic materials — Tensile testing at ambient temperature.
3 Principle
An increasing tensile load is continuously applied until rupture occurs in a cylindrical test specimen taken longitudinally from the weld metal in a welded joint.
Unless otherwise specified, the test shall be carried out at ambient temperature (23 ± 5) °C.
4 Symbols and abbreviated terms
The symbols and abbreviated terms to be used for the longitudinal tensile tests are specified in ISO 6892.
5 Removal of test specimens
5.1 Location
The test specimen shall be taken longitudinally from the welded joint of the manufactured product or from the test piece. After machining, the parallel length of the test specimen shall consist only of weld metal (see Figures 1 and 2).
To enable correct positioning of the test specimen in the joint, the joint cross-section at both ends of the test specimen can be macroetched.
5.2 Marking
Each test piece shall be marked in order to identify its exact location in the manufactured product or in the joint from which it has been removed.
Each test specimen shall be maried in order to identify its exact location in the test piece from which it has been taken.
When removed from the test piece, each test specimen shall be mariced.
5.3 Heat treatment and/or ageing
No heat treatment shall be applied to the welded joint or to the test specimen unless it is specified or permitted by the relevant application standard dealing with the welded joint to be tested. Details of any heat treatment shall be recorded in the test report. If natural ageing of aluminium alloys takes place, the time between welding and testing shall be recorded.
NOTE The presence of hydrogen in ferrous weld metals may adversely affect the test results and suitable hydrogen release treatment may be necessary.
5.4 Extraction
5.4.1 General
The mechanical or thermal processes used to extract the test specimen shall not change the properties of the test
specimen in any way.
5.4.2 Steel
Shearing is excluded for thicknesses -> 8 mm. If thermal cutting or other cutting methods which could affect the cut surfaces are used to cut the test specimen fron the welded plate, or from the test piece, the cuts shall be made at a distance 8 mm from the surfaces of the final parallel length of the test specimen. Thermal cutting shall not be used parallel to the original surface of the welded plate or of the test piece.
5.4.3 Other metallic materials
Shearing and thermal cutting are excluded and only machining (e.g. sawing and turning) shall be used.BS EN ISO 5178 pdf download.