Friday, March 14, 2014

RE: [MW:20329] Acceptable Values for Charpy Impact Test at -(minus) 196 degC for A312 TP304

For stainless steels in low temperature applications, charpy impact acceptance criteria is lateral expansion not absorbed energy.  For example see ASME Sc. VIII UHA-51 or B31.3 paragraph 323.3.5(b).

 

John A. Henning

Welding & Materials

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Tri Yulianto
Sent: Friday, March 14, 2014 8:08 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:20328] Acceptable Values for Charpy Impact Test at -(minus) 196 degC for A312 TP304

 

Hi Choudhary,

Please see ASTM A 370 table 9 for charpy  value acceptance criteria for subsize specimen.

Cheers,

Tri Yulianto
BAM Clough JV - Wheatstone LNG

On Mar 14, 2014 8:00 PM, "Anurudh Choudhary" <theoilgasengineer@gmail.com> wrote:

Dear All,

 

I'm using A312 TP304 pipe for design temperature -(minus) 196 degC for BOIL OFF GAS (BOG) service.

 

we have carried out the charpy impact test at -(minus) 196 degC for the pipe. we are having average value of Joules for pipe specimens.

 

Please provide/guide me with the Acceptable value for Charpy impact values( Joules) at -(minus) 196 degC along with codes/reference for A312 TP304 Pipe.

 

Kind Regards,

 

Choudhary Anurudh

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