ISO5178
Second edition
2019-01
Destructive tests on welds in metallic materials — Longitudinal tensile test on weld metal in fusion welded joints
Essais destructifs des soudures sur matériaux métalliques — Essai de traction longitudinale du métal fondu des assemblages soudés par fusion
Reference numberISO 5178:2019(E)
© ISO 2019
ISO 5178:2019(E)
Contents
Page
Foreword ........................................................................................................................................................................................................................................iv1 Scope .................................................................................................................................................................................................................................12 34 6
Normative references ......................................................................................................................................................................................1Termsanddefinitions .....................................................................................................................................................................................1Symbols and abbreviated terms...........................................................................................................................................................1Removal of test specimens .........................................................................................................................................................................26.1 Location.........................................................................................................................................................................................................26.2 Marking .........................................................................................................................................................................................................26.3 Heat treatment and/or ageing...................................................................................................................................................26.4 Extraction ....................................................................................................................................................................................................2
6.4.1 General......................................................................................................................................................................................26.4.2 Steel.............................................................................................................................................................................................26.4.3 Other metallic material ..............................................................................................................................................2
6.5 Machining of test specimens .......................................................................................................................................................26.6 Dimensions.................................................................................................................................................................................................36.7 Surface quality.........................................................................................................................................................................................4Conditions of testing.........................................................................................................................................................................................4Test results..................................................................................................................................................................................................................48.1 General ...........................................................................................................................................................................................................48.2 Examination of fracture surfaces ............................................................................................................................................4Test report...................................................................................................................................................................................................................4
5 Principle ........................................................................................................................................................................................................................1
7 8 9
Annex A (informative) Example of a test report .......................................................................................................................................5
© ISO 2019 – All rights reserved
iii
ISO 5178:2019(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISO's adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso .org/iso/foreword .html.This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 5, Testing and inspection of welds.
Any feedback, question or request for official interpretation related to any aspect of this document should be directed to the Secretariat of ISO/TC 44/SC 5 via your national standards body. A complete listing of these bodies can be found at www .iso .org/members .html. Official interpretations, where they exist, are available from this page: https: //committee .iso .org/sites/tc44/home/interpretation .html.This second edition cancels and replaces the first edition (ISO 5178:2001), which has been technically revised. The main changes compared to the previous edition are as follows:— the normative reference has been revised from ISO 6892 to ISO 6892-1;— new mandatory Clause 3 has been added;— Clauses 5 and 9 have been improved.
iv
--`,```,,``,,``,,,,,,,,,``,,`,,`-`-`,,`,,`,`,,`---
© ISO 2019 – All rights reserved
INTERNATIONAL STANDARD ISO 5178:2019(E)
Destructive tests on welds in metallic materials —
Longitudinal tensile test on weld metal in fusion welded joints
1 Scope
This document 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 document 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 6892-1.
Unless specified otherwise for specific points in this document, the general principles of ISO 6892-1 apply.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
3Termsanddefinitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:— ISO Online browsing platform: available at https: //www .iso .org/obp— IEC Electropedia: available at http: //www .electropedia .org/4 Symbols and abbreviated terms
The symbols and abbreviated terms to be used for the longitudinal tensile tests shall be as specified in ISO 6892-1.
5 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.
The test shall be carried out at room temperature between 10 °C and 35 °C, unless otherwise specified.Tests carried out under controlled conditions shall be made at a temperature of 23 °C ± 5 °C.
© ISO 2019 – All rights reserved
1
ISO 5178:2019(E)
6 Removal of test specimens
6.1 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.
6.2 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.
When removed from the test piece, each test specimen shall be marked.
Each test specimen shall be marked in order to identify its exact location in the test piece from which it has been taken.
6.3 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 can adversely affect the test results and suitable hydrogen release treatment.
6.4 Extraction
6.4.1 General
The mechanical or thermal processes used to extract the test specimen shall not change the properties of the test specimen in any way.6.4.2 Steel
Shearing is excluded for thicknesses greater than 8 mm. If thermal cutting or other cutting methods which can affect the cut surfaces are used to cut the test specimen from the welded plate, or from the test piece, the cuts shall be made at a distance greater than or equal to 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.6.4.3
Other metallic material
Shearing and thermal cutting are excluded and only machining (e.g. sawing and turning) shall be used.
6.5 Machining of test specimens
Unless otherwise specified in the particular application standard dealing with the welded joint under examination, the test specimens shall be taken from the centre of the weld metal as shown in Figure 1 and the cross-section as shown in Figure 2. In the case where the test specimen is not taken from mid-thickness, the distance from the surfaces, t1, shall be recorded [see Figures 2 a) and b)]. In the case of very thick or double-sided welded joints, more than one test specimen may be taken at different 2
--`,```,,``,,``,,,,,,,,,``,,`,,`-`-`,,`,,`,`,,`---
© ISO 2019 – All rights reserved
ISO 5178:2019(E)
locations through the thickness [see Figure 2 c)], in which case the distances, t1 and t2, of each test specimen in the joint cross-section shall be recorded.
Figure 1 — Examples of location of test specimens — Longitudinal plane section
a) All-weld metal test specimen for welding consumableclassificationb) Test specimen from a joint welded from one side onlyc) Test specimen from a joint welded from both sides
Figure 2 — Examples of location of test specimens — Cross-section
6.6 Dimensions
Each test specimen shall have a circular cross-section, and its dimensions, expressed as functions of the diameter, d0, of the parallel length shall conform to ISO 6892-1.
The gripped ends of the test specimens shall be compatible with the tensile testing machine used.
© ISO 2019 – All rights reserved --`,```,,``,,``,,,,,,,,,``,,`,,`-`-`,,`,,`,`,,`---
It shall have a normal diameter, d0, of 10 mm. If this is not possible, the diameter shall be as large as possible but not less than 4 mm. The actual size shall be recorded in the test report.
3
ISO 5178:2019(E)
6.7 Surface quality
The tolerances specified in ISO 6892-1 shall apply.
Strain-hardening or excessive heating of the material shall be avoided.
7 Conditions of testing
The test specimen shall be loaded gradually and continuously in accordance with ISO 6892-1.
8 Test results
8.1 General
The test results shall be determined in accordance with ISO 6892-1.
8.2 Examination of fracture surfaces
After rupture of the test specimen, the fracture surfaces shall be examined and the existence of any imperfections that can have adversely affected the test shall be recorded, including their type, size and quantity. If fish eyes are present, they shall be recorded and only their central regions shall be considered as imperfections.
9 Test report
The test report shall include the following information in addition to that given in ISO 6892-1:a) a reference to this document, i.e. ISO 5178;
b) the location of test specimen, sketch if required (see Figures 1 and 2);c) the test temperature, if different from the ambient temperature;d) the type and dimensions of imperfections observed;e) the diameter, d0.
An example of a typical test report is given in Annex A. The proof strength plastic extension, Rp, and the force corresponding to the desired proof strength plastic extension, Fp, in Table A.1 may be replaced with the upper yield strength, lower yield strength, proof strength total extension and the force corresponding to each property according to the requirement.
--`,```,,``,,``,,,,,,,,,``,,`,,`-`-`,,`,,`,`,,`---
4
© ISO 2019 – All rights reserved
ISO 5178:2019(E)
Annex A (informative)
Example of a test report
No.
According to WPS
test result
According to test result “tensile test”Manufacturer:
“ ”
Purpose of the examination: Form of product:Parent metal:Filler metal:
Test spec-imen No./position
Table A.1 — Longitudinal tensile test in accordance with ISO 5178
Dimension/ diameter mm FpN
FmN
N/mm2N/mm2
Rp
Rm
mm L0
A%
Z%
Test tem-Remark
perature e.g. fracture
°Cappearance
Examiner or test body: (name, date and signature)
Certified by: (name, date and signature)
© ISO 2019 – All rights reserved
--`,```,,``,,``,,,,,,,,,``,,`,,`-`-`,,`,,`,`,,`---
5
ISO 5178:2019(E)
ICS 25.160.40
Price based on 5 pages
© ISO 2019 – All rights reserved
因篇幅问题不能全部显示，请点此查看更多更全内容