Wednesday, May 27, 2009

[MW:2248] RE: 2244] Re: Y COFFICIENT IN PIPING

Hi!

CAN ANY BODY EXPLAIN,WHY Y (IN B31.3 FOR CALCULATING THICKNESS) INCREASES WITH INCREASING TEMPRATURE?

(ACCORDING TO ALLOWABLE STRESS DECREASES WITH INCREASING TEMP

Answer-

With increase in service temperature, the base material  YS and UTS reduces ( YS and UTS is inversely proportional to the temp.)Therefore designer increases the thickness of component with  out changing the base material

 

Regards

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Ali Asghari
Sent: Wednesday, May 27, 2009 3:10 PM
To: materials-welding@googlegroups.com
Subject: [MW:2244] Re: Y COFFICIENT IN PIPING

 

dear Shank Vagal

can you explain more?because my point of view from writting parenthesis is the required minimum thickness (with assuming constant work presure)decreases.

rjd

 


From: Shank Vagal <nach_sam@yahoo.com>
To: materials-welding@googlegroups.com
Sent: Wednesday, May 27, 2009 11:18:34 AM
Subject: [MW:2241] Re: Y COFFICIENT IN PIPING

The answer you have given in the parenthesis itself..............

--- On Wed, 27/5/09, Ali Asghari <asghariali@rocketmail.com> wrote:


From: Ali Asghari <asghariali@rocketmail.com>
Subject: [MW:2240] Y COFFICIENT IN PIPING
To: materials-welding@googlegroups.com
Date: Wednesday, 27 May, 2009, 10:49 AM

CAN ANY BODY EXPLAIN,WHY Y (IN B31.3 FOR CALCULATING THICKNESS) INCREASES WITH INCREASING TEMPRATURE?

(ACCORDING TO ALLOWABLE STRESS DECREASES WITH INCREASING TEMP) 

 

REGARD ADVANCE



 


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