Re: [MW:15843] requirment of Lateral expansion for P1 TO P8 PQR as ASME Sec IX

Dear Ankit,

 

In addition to the earlier mail i want to add

 

323.3.5 Acceptance Criteria

(c) Weld Impact Test Requirements.

Where two base metals having different required impact energy values are joined by welding, the impact test energy requirements shall conform to the requirements of the base material having a specified minimum tensile strength most closely matching the specified minimum tensile strength of the weld metal.

Nothing says about Lateral Expansion.

 

On Thu, Nov 1, 2012 at 9:58 AM, Ankit PAtel <ankit.patel@orientalindia.net> wrote:

Dear Experts,

 

We have performed a PQR for 25 thk  plate , P1(SA 516 GR-70 ) To P8(SA 240 TP-316L). These PQR has been stress relieved at 620° C & impact tested at -20°C.

The testing laboratory has noted down only the joule values for the impact test, but they have not noted the Lateral Expansion Values P-8 Material.

The Avg. Joules Values observed are as follows:

Weld-72.67 J

HAZ(GR-70)-35.33J

HAZ(GR-316L)-158 J

PARENT(GR-70)-51.33J

PARENT(GR-316L)-298 J

 

Now our TPI says that for GR-316L Lateral Expansion Values is must for acceptance of the PQR.

Is it so?

Or based on these joules values these PQR can be accepted & used for weld having requirement of impact  test at -20°c

 

 

Thanks & Regards

Ankit Patel
Engineer Quality

 

 

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Thanks & Regards
Biplab Pal
Welding Inspector

E-mail:   biplab.mech@gmail.com
 
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