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

By Materials & Welding

 

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

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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