Hi,
First of all please remember that these are engineering steels, which means the mechanical properties can be adjusted as per customer requirements. So to qualify the procedure you should first simulate the PWHT parameters on the raw material and test the mechanical properties. Then weld the material, do PWHT and test it.
Hope this clarifies.
Thanks & Regards,
Harish
Harish
On Sep 10, 2017 16:50, "Aby Jose" <abycscec@gmail.com> wrote:
--Dear experts,I am conducting a PQR for ASTM A 519 Gr 4130 QT pipe material.When I checked A519 standard it is giving the tensile strength values for 4 conditions only. Hot rolled/stress relieved/Annealed/Normalised.But in the material mtc I cannot find any details regarding the condition. It is given as Quench tempered only. The UTS of the parent material in mtc is 728mpa. As per PWPS I have done PWHT after welding. When I did the tensile test ; ductile fracture occured in the parent material with a UTS of 683.What is the minimum tensile strength required for the PQR to get accepted?Regards,Jose
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