[MW:2289] RE: 2286] Re: hydro test --- 95% SMYS

 

May 31, 2009

 

Hi,

 

Indirectly the material is cold drawn very slightly during hydrotest at high pressure (90% - 95%SMYS) and becomes stronger. It also follows that there is reduction in the residual stress.

 

Good luck.

PJA

SAVE TREES  - THINK BEFORE YOU PRINT

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From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Shank Vagal
Sent: Sunday, May 31, 2009 1:36 PM
To: materials-welding@googlegroups.com
Subject: [MW:2286] Re: hydro test

 

Ali. This is a very unusual query; hydrotest is an integrity test. All other things - where did you get them from? Rgds Shank --- On Sun, 31/5/09, Ali Asghari <asghariali@rocketmail.com> wrote: From: Ali Asghari <asghariali@rocketmail.com> Subject: [MW:2285] hydro test To: materials-welding@googlegroups.com Date: Sunday, 31 May, 2009, 9:07 AM hi can every body answer two follwing questions? how hydro test increase the resistance to brittle fracture or failure by crack like flaw?do hydro test decrease residual stress?   regard advance.

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