Dear Ali,
SA- 517 is a high strength quenched and tempered steel, which comes in 6 grades, Grade A, B, E, F, J, P. You may find all the details in ASME Sec-II, Part-A.
Coming back to this steel, it is :-
· Quenched—to refine the grain, to enhance the UTS. Talk about any alloying element, Cr, Mo, Ti, V, Bo Nb/Cb, you'll have in this steel. This steel have very little ductility in as quenched condition
· Tempering – to enhance the ductility(% El), to enhance the notch toughness, reduce the hardness.
A combination of both the above heat treatments provides a balanced mechanical properties in this steel. This answers point1 of your query.
ASME Sec VIII, DIV-1,UCS-66, does not deal with this steel, UCS chapter is for carbon and low alloy steel only .
SA-517 is covered in great details under UHT. There is no exemption for impact test on this steel. Welding of SA-517, as like any other Q&T steel requires a great control and precautions on welding.
Where are you thinking of using this steel? Let me know if you require further details.
Thanks.
Pradip Goswami,P.Eng
Senior Engineer/Specialist(Welding-Metallurgy)
ONTARIO POWER GENERATION Inc.
Email- pgoswami@quickclic.net, pgoswami@sympatico.ca.
From: pgoswami@sympatico.ca [mailto:pgoswami@sympatico.ca]
Sent: Wednesday, May 26, 2010 2:31 PM
To: GOSWAMI Pradip -THERMAL
Subject: FW: [MW:5263] gorup of SA517
Date: Wed, 26 May 2010 21:44:19 +0530
From: rutvikdixit@yahoo.co.in
Subject: Re: [MW:5263] gorup of SA517
To: materials-welding@googlegroups.com
| Dear Ali,
Dear All 1-is Quenching & Tempering a process of grain refining? 2-SA 517 belong to curve A or B in UCS 66? REGARDS
|
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