Metrial selection in Instrumentation 2

[Masoud280]

Dear Frineds

I am instrumentation engineer.I need some quick guide to know material properties against temperature,pressure,corossion and errosion in OIL and GAS production.Most of the time I supposed to evalute a bidder offer which has deviation from our requested data sheet in material for different parts of valves,instruments and so on.

regards
masoud

 

[metengr]

Masoud280;
Based upon your other questions on this forum related to materials, I would suggest you accept no deviation and work with the materials specified from your data sheet. Evaluating material options requires expertise which is not easily learned or gathered over an internet forum. If a vendor submits options for alternative materials, either indicate you will not accept or hire a firm that can assist you to evaluate materials each project.

 

[Masoud280]

Dear metengr

I know it requires an experties and it could not be learn only on single froum and some messaging here. But I am after some hints to start my studies to understand basic concepts and aquire enough knowldge to evalute materials options by bidders.Of course meanwhile I will use our company metrial dept. However I want to prepare myself for project management so I shall extend my knowladge in this field as i feel weekpoint there.
So any hints to start would be highly apperciated.

[ignore][/ignore]

best regards
Masoud

 

[metengr]

Masoud;
Ok. I would suggest you purchase the following book and read it. It will be an excellent starting point for you.

http://www.amazon.com/Metallurgy-Non-Metallurgist-Second-Edition-05306G/dp/1615038213

 

[arunmrao]

ASM was offering an attractive discount on the same. Grab it!!

 

[mrfailure]

I say this a lot: take metengr's advice and have substitution proposals evaluated by a firm with an experience materials engineer if you need to approve materials substitution requests from vendors. You can easily get into serious trouble without the proper experience and there may well be factors you did not consider that would lead to catastrophic failure. (In my case, it always helped that I primarily functioned as a failure engineer as I made substitution decisions based on the fact I did not want to see the part in my lab a few years down the line!)

Besides the book, I suggest you consider taking the ASM course also titled Metallurgy for the Non-Metallurgist. This will give you a deeper understanding and is available in a variety of forms, including on-line.

 

[Masoud280]

Dear friends
A question Ineed a transmitter to be SS316 inwetted parts but bidder offers me SS316 L ss is it acceptable? How does differe these materials?



best regards
Masoud

 

[Maui]

316L is a lower carbon version of 316 stainless steel. 316 has 0.08 maximum allowable carbon content while 316L has a 0.03 maximum allowable carbon content.

Maui

http://www.EngineeringMetallurgy.com

 

[arunmrao]

"L" is a prime grade material, as explained by Maui . Buy the book recommended by Metengr and it shall be your companion.