[MW:15830] requirment of Lateral expansion for P1 TO P8 PQR as ASME Sec IX

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