Re: [MW:8285] how to select a PQR test coupon

Can anyone describe the point 2 as mentioned in below. How to verify the lower and upper thickness limit when impact test applicable or when impact test not applicable. 

On Thu, Nov 11, 2010 at 4:12 PM, G Padmanabhan <gpadmana@gmail.com> wrote:

Dear Ajay Singh,

Please find my reply given below

1.Select the test coupon thickness of 11.8 mm to 12mm Thickness.Since you are carrying out heat treament above upper transformation temperature the  max base metal thickness limit is 1.1 x T.

 

2. Also due to impact test,it covers  lower T/2 limit also.i.e 6mm

 

I hope that you understand above explanation.

On Thu, Nov 11, 2010 at 8:45 AM, ajay singh <asingh10088@gmail.com> wrote:

Dear members

Can you please guide me to select PQR test coupon on the basis of my below requirement

1. PQR to be used for my job thickness 6.0 mm to 13 mm
2. Material of construction is SA516 GR.70 plate.
3. Welding process to be involved is only SMAW.
4. Test coupon to be Normalized at 900 deg.C after completion of welding.
5. Bend test, Tensile, Hardness & Impact test to be carried out as per Sec. IX.
6. All joints to be single V type and to be back chip for final run.

kindly guide me with some example.

thanks in advance.
Ajay   

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With Warm regards,

G.Padmanabhan
+96895685853

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