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  1. mrmalcolm

    Non destructive testing of heavy thick plates

    Many designs will consider both yield strength and tensile strength. Yield strength and tensile strength of base material need to be separately measured and satisfied for the design. As an example, the test result is a yield strength of 270 MPa for the base material and a tensile strength of...
  2. mrmalcolm

    Manufacture and testing of welds — Production test

    So, the acceptance level of NDT of mechanical property tests should not be stricter than that of non-destructive testing for production welds. Am I right? Thank you.
  3. mrmalcolm

    Non destructive testing of heavy thick plates

    BUTT WELDS. THANK YOU.
  4. mrmalcolm

    Manufacture and testing of welds — Production test

    The understanding of this sentence is that the mechanical properties test plate shall be non-destructively tested and the test specimen will be taken from sound areas and will not be taken from the defective location of the test plate. Thanks.
  5. mrmalcolm

    Manufacture and testing of welds — Production test

    EN 13445-4, thanks.
  6. mrmalcolm

    Manufacture and testing of welds — Production test

    The point is why the test specimens can be taken from sound areas?
  7. mrmalcolm

    Non destructive testing of heavy thick plates

    Thank you.The key is that the steel has undergone 100% non-destructive testing and meets EN 10160:1999 S1/E1 grade or ASTM A 578:2017 grade C. However, for the steel that has already been UT qualified, defects were found in the base metal during non-destructive testing of the weld area after...
  8. mrmalcolm

    Manufacture and testing of welds — Production test

    Thank you, noting that this requirement is not a requirement for Welding Process Qualification Test Plate or for NDT of the pressure vessel product. This requirement is appied to production test plates. In order to control the continuing quality of the manufacture and the compliance of the...
  9. mrmalcolm

    Non destructive testing of heavy thick plates

    Thank you For heavy thick plates, ultrasonic testing is performed in accordance with either EN 10160:1999 Level S1/E1 or ASTM A 578:2017 Level C. For weld of the heavy thick plates, TOFD is required and the acceptance criteria is ISO 15626 level 1, or PAUT is required and the acceptance criteria...
  10. mrmalcolm

    Non destructive testing of heavy thick plates

    May I ask if colleagues have any experience in non-destructive testing of thick plates? Where thick plates (steel plates with a thickness greater than 100mm) ，the steel mill has conducted 100% ultrasonic testing and passed it. Then, during non-destructive testing of the weld after welding at...
  11. mrmalcolm

    Manufacture and testing of welds — Production test

    EN 13445-4:2021 Quote 9.3 Extent of testing …… Prior to cutting the test pieces, the test plate shall be non-destructively tested in order to ensure that the test specimens are taken from sound areas. Unquote The test plate of pressure vessel welding products is an important means to ensure...
  12. mrmalcolm

    Bending test of titanium alloy weldment

    Thank you all for your expert comments. Based on the comments, does it show that ISO 15614-5 is too strict and impractical for bending tests?The requirements in AWS D1.9 for welding procedure test are more in line with practice? Thank you.
  13. mrmalcolm

    Bending test of titanium alloy weldment

    Thank you for your professional comment. We agree that bending of titanium alloy weldments is not an easy task. AWS D1.9-2015 Structural Welding Code-Titanium has also been reviewed. It has been noted that its requirements for bending tests are different from ISO standards. Quote AWS D1.9 Part...
  14. mrmalcolm

    Bending test of titanium alloy weldment

    I have a consultation regarding the bending test of titanium alloy welding ISO 15614-5 Quote The diameter of the former or the inner roller shall be 6 t except for material group 51 when 4 t shall be used. The bending angle shall be 180° for parent metal with elongation A ≥ 20%. For parent...
  15. mrmalcolm

    Half thickness tensile specimen retaining one rolled surface

    Dear sir, Tensile test results of the half that are testing are generally identical to the test result of the other half. However tensile test results of the half thickness tensile specimen will be identical to the test result of the full thickness tensile specimen. Or what is the relationship...
  16. mrmalcolm

    Half thickness tensile specimen retaining one rolled surface

    For the tensile test of steel, tensile specimen with the full product thickness should be performed. Particularly on very thick products where the capacity of the available testing machine is insufficient to allow the use of test specimen of full thickness, this may be reduced by machining one...
  17. mrmalcolm

    Definition of application temperatures in ISO 15614-1

    Dear Steve Jones Thanks very much for your early reply. For instance. Steel A (the steel standard specifies an impact test temperature of -10 ℃), Welding consumables B1 (welding consumables standard specifies impact test temperature -10 ℃) Welding consumables B2 (the standard for welding...
  18. mrmalcolm

    Definition of application temperatures in ISO 15614-1

    ISO 15614 8.4.4 Filler material, manufacturer/trade name, designation Quote For level 2: Filler materials cover other filler materials as long as, according to the designation in the appropriate international standard for the filler material, they have quivalent mechanical properties, same type...
  19. mrmalcolm

    Range of filler material for welding procedures qualification in ISO 15614-1

    Referring to ISO 15614-1, 8.4.4 level 2, When impact testing is required by the application standard at temperatures less than -20 ℃, for solid wire and rods with the same designation and nominal chemical compositions, the additional test piece is not required, even if changing the manufacturer...
  20. mrmalcolm

    Does the welder for Welding Process Qualification testing Be Qualified?

    Thank you for your reply. Would it be more appropriate to choose a moderately skilled welder( (with or without a welding qualification certificate) to weld the WPS test assembly? Best regards

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