Pressure Vessel Materials

[jayantasm2003]

I am striving to establish the procedure on following area:

1) How to select the material of pressure vessel for different fluid and operating conditions.
2) How to determine the corrosion allowance.

In addition to above I want to know about the metallurgical changes occurs within the micro-structure of steel with the addition of different elements like manganese, nickel etc so that we get variation of mechanical and chemical properties of alloy steel.

Any help or book reference is appreciated & thanks in advance.

[ADMADM]

Jaynatasm2003,

if i am not wrong there should be something interesting for you in the Material section of the forum. Take look, i' ve found there a book on material selection providing guidance in estabilishing a relationship between material, service and Design / Operation conditions.

Should you encounter problems in finding the book tell me, i will search for the exact thread.

Cheers,

ADMDM

[Ali366]

jayantasm2003

Your question is so general. You can't find something straight forward that tells you when you should select what. As far as I know, there are numerous things to consider while selecting a material for a purpose. NACE and EFC has got valuable sets of publications (standards and guidelines) for materials and materials selection. You might find the book "materials selection for refineries and associated facilities" quite helpful. You should be able to find it in this forum somewhere!
Again, ASM handbooks are an ocean of information about materials and their properties. These handbooks also contains a lot of information about corrosion and corrosion mechanisms.
Corrosion allowance should be specified based on the design life and corrosion rate of vessel material in its intended service (process fluide, temperature, etc.). NACE have got some practical and useful data bases for corrosion rates. Some of large organizations and companies use their corrosion modelling softwares (normally in-house developed programs) to predict corrosion rates.
I don't want to make you disappointed. However, I were you, I would consult an experienced materials engineer (or even consultant company) to select materials for process equipment.

Regards,

[jayantasm2003]

ADMADM and ALI thank you very much for this help. I am downloading some material books from this forum, but please advise me, is there any book where i can find the change of phases took place within steel by adding alloy elements like nickel etc, so that we get the required mechanical properties.

[Abdel Halim Galala]

See the following Threads of CR4 Forum:
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[Ali366]

ADMADM and ALI thank you very much for this help. I am downloading some material books from this forum, but please advise me, is there any book where i can find the change of phases took place within steel by adding alloy elements like nickel etc, so that we get the required mechanical properties.

jayantasm2003,

You might find the following useful:
ASM Metals Handbooks, Vol. 1, 3 and 9
Elements of Metallurgy and Engineering Alloys (ASM International)
Steel heat treatment: metallurgy and technologies

A very brief description of effects of alloying elements is given in the link below:

[link Point to another website Only the registered members can access]
Also you may find a lot of academic references on this topic through searching wikipedia.

Generally, it is much more difficult to find metallurgy books that do not have a chapter or two on this subject than books that have nothing to say about it!

good luck!

[laurss]

Salut men! I have important books for selecting the right material for tipical refineries proceses and also regarding the medium and operating parameters for working fluid.
If you are interested and if you have another interesting materials for me we can make a share exchange.
I m interesting in mechanical design of heat exchangers. If you have some en-13445/3 caluclation software(not PV ELITE-is not the best choice for EN calc) or calculation sheets for pressure parts i would be very interested. I hope to find somebody to cooperate. Good luck!

[jayantasm2003]

Thanks again for helping me. For laurss I know one software called codeware compress similar to PVelite. Also I want know is there any software to design box type heat exchanger like plug or cover header type?

[FATHI]

Regarding Air coolers heat exchangers ( cold box types) , Try to find on this forum , the book "Design of process equipment"of Mahayan


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Further for the selection of materials , before going into search in books. Several criteria are set for material selection. A good start is to understand ASME VIII - Division 1 , paragraph UCS-56 . This deals with brittle fracture and the need or not for a Post Weld Head treatment (PWHT).

Of course they are other criteria , which have to be balanced.
You start with the cheapest material , giving the least trouble.
And depending on your process (for instance :NACE, HIC , high temperature with creep ..) , plant life expectancy ( if for instance over 20 years the corrosion allowance is say 5 mm..)...thus depending on this and probably some other factors..you will narrow the choice.

I hope in the next discussion we can exchange ideas , and come forward.

[mhrizadi]

see pv-book.com the book contains a good reference table for material selection

[fuzzy_mech07]

please upload.

[gerge22]

take a look here :

[link Point to another website Only the registered members can access]