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



 


Explore and discover exciting holidays and getaways with Yahoo! India Travel Click here!

 


--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
-~----------~----~----~----~------~----~------~--~---

No comments:

[MW:34916] Applicability of Impact requirement as per ASME B31.3

Dear All, Design code – ASME B31.3, Welding Code- ASME BPVC SEC IX Material  to be used used during Fabrication - SA 333Gr6 (P No.1 G...