piping designers . com | Forum
pipingdesigners.com home page pipingdesigners.com home page Get the RSS Feed from the Forum pipingdesigners.com on Facebook pipingdesigners.com on twitter pipingdesigners.com on LinkedIn About pipingdesigners.com pipingdesigners.com Forum pipingdesigners.com Codes & Standards pipingdesigners.com Links pipingdesigners.com Tools pipingdesigners.com Tips pipingdesigners.com Training pipingdesigners.com Jobs Board pipingdesigners.com home page

Like Us on Facebook Piping Designers LI Group follow pipingdesigners.com on twitter piping designers . com About Us piping designers . com Forum piping designers . com Codes & Standards piping designers . com Links piping designers . com Tools piping designers . com Training Piping Jobs Board piping designers . com piping designers . com

The Piping Designers Job Board

It is currently Mon May 20, 2013 6:19 am

All times are UTC [ DST ]




Post new topic Reply to topic  [ 5 posts ] 
Author Message
 Post subject: Allowed to take values from a suppliers material certificate
Unread postPosted: Mon Oct 17, 2011 8:15 am 
Offline

Joined: Mon Nov 08, 2010 10:48 am
Posts: 10
Years of Experience: 23
Country: Netherlands
Hi,

I have to make some pipe stress calculations, E235N material acc. EN10305-4.
Is it allowed to calculate pipe stress with Re values from a suppliers material certificate (which are higher values, 310 N/mm2 instead of 235 N/mm2) instead of Re values from EN10305-4?

Thanks in advance
Edwin


Top
 Profile  
 
 Post subject: Re: Allowed to take values from a suppliers material certifi
Unread postPosted: Mon Oct 17, 2011 12:16 pm 
Offline

Joined: Sat Jul 30, 2011 10:53 pm
Posts: 5
Years of Experience: 8
Country: India
What is an Re Value?


Top
 Profile  
 
 Post subject: Re: Allowed to take values from a suppliers material certifi
Unread postPosted: Mon Oct 17, 2011 12:45 pm 
Offline

Joined: Mon Nov 08, 2010 10:48 am
Posts: 10
Years of Experience: 23
Country: Netherlands
ahm41293@yahoo.com wrote:
What is an Re Value?

Re = Yield strength


Top
 Profile  
 
 Post subject: Re: Allowed to take values from a suppliers material certifi
Unread postPosted: Thu Oct 20, 2011 1:58 am 
Offline

Joined: Tue Sep 27, 2011 9:05 pm
Posts: 6
Years of Experience: 15
Country: New Zealand
It is entirely acceptable to use values determined from actual testing of said certified material in your pipe stress check.
You need to be satified that the chemical composition and mechanical properties meet or exceed the material specification/standard and that the material certification is to the required standard as well.
I usually go for certification DIN 50049/EN 10204/3.1B and then personally check materials and certificates match when arrives to our workshop.
generally, the code stated values are minimums that must be met to qualify the material.
I would normally use the default library code values used by my pipe stress software and only revert to using actual strength values if stresses to the limit and design marginal.


Top
 Profile  
 
 Post subject: Re: Allowed to take values from a suppliers material certifi
Unread postPosted: Thu Oct 20, 2011 3:29 pm 
Offline

Joined: Mon Nov 08, 2010 10:48 am
Posts: 10
Years of Experience: 23
Country: Netherlands
That's totally clear. Thanks!


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Jump to:  
cron  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group