Properties at Elevated temperatures - ASTM A 387 Gr.22 and ASTM A 182 Gr.F22‏

[pinak]

Hi,



We are manufacturing steam turbines for Cogeneration applications. We
do not have material ASTM A 387 Gr.22 readily available and intend to
use ASTM A 182 Gr.F22 grade against our requirement of ASTM A 387 Gr.
22. Before we take this decision we need to compare properties at
elevated temperature which is not available in standard.



The component in question could see elevated steam temperatures of up
to 540 Deg C



Would request all group members for help and if possible send some
documentation on the properties at elevated temperatures for both ASTM
A 387 Gr.22 and ASTM A 182 Gr.F22



Regards





Pinak

[Muni Andy]

Dear Mr.Pinak,
ASTM A 182 F22 will have better properties than A 387 F22.
A387 is Plate material.
A182 is Forging material.
You can refer relevant ASTM Book of standards.
Regards,
C.Muniyandi

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[pgoswami]

Hi Pinak,

 

Please see below the extract from ASME Sec-II,Part-D, the allowable stress tables.There are virtually any differences between these speciation's, since the base chemistry is the same. However to be on the conservative side it would be a good practice to specify the best heat treatment recommendations as per SA 387 Gr 22 or SA -182 F22.

 

If you require creep data, it's available in this website:- http://smds.nims.go.jp/creep/index_en.html. You have to register and then may view on line.Should you need to print or save any information, you need to fill up a request form.

 

Hope it helps  you.

 

Thanks.

 

Pradip Goswami,P.Eng.,IWE.

Welding & Metallurgical Specialist & Consultant

Email-pgoswami@sympatico.ca,

pgos...@quickclic.net

 

 

 

 

 

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From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of Muni Andy
Sent: Saturday, December 18, 2010 10:50 AM
To: material...@googlegroups.com
Subject: Re: [MW:8791] Properties at Elevated temperatures - ASTM A 387 Gr.22 and ASTM A 182 Gr.F22‏