Please identify this material.
Please identify this material.
(OP)
The chemistry is as follows:
Carbon 0.05
Sulfur 0.004
Silicon 0.08
Manganese 0.10
Iron 19.3
Chromium 21.5
Molybdenum 2.79
Copper 0.01
Aluminum 0.25
Titanium 3.53
Cobalt 12.7
Nickel Matrix
The chemistry is of a 1.5" stud from a large turbine case.
Any help would be greatly appreciated.
Carbon 0.05
Sulfur 0.004
Silicon 0.08
Manganese 0.10
Iron 19.3
Chromium 21.5
Molybdenum 2.79
Copper 0.01
Aluminum 0.25
Titanium 3.53
Cobalt 12.7
Nickel Matrix
The chemistry is of a 1.5" stud from a large turbine case.
Any help would be greatly appreciated.





RE: Please identify this material.
A couple of things look very odd.
It looks like a maraging alloy, but the ratios don't fit allys that I know off hand.
= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm
RE: Please identify this material.
RE: Please identify this material.
RE: Please identify this material.
Again any help is appreciated.
RE: Please identify this material.
RE: Please identify this material.
The Fe, Al and Ti are out of wack. (I don't trust the Co either)
What about W, Ta and Nb?
Only 31RC? That sounds low for an aged Ni based alloy.
You need to have some one with better ref standards run another chemistry.
When was this manufactured? By whom? Where?
= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm
RE: Please identify this material.
RE: Please identify this material.
But if we knew when, who, and where this stud was manufactured...I wouldn't be here asking for help.
RE: Please identify this material.
RE: Please identify this material.
RE: Please identify this material.
RE: Please identify this material.
As far as the cobalt content, a lot of older alloys specify (or may have once specified?) a combined Co+Ni content (Inconel 600 and 625 for instance; and my circa 1980's Huntington alloys reference card shows this for all of the inconel/Huntington alloys), since these metals were/are difficult to seperate. If the cobalt content was ignored, would you be able to identify the alloy?
RE: Please identify this material.
But as this project is getting close to start we are leaning towards the waspaloy, the only problem with the waspaloy is the lack of iron. Waspaloy is a 2% max iron while ours has 19.3%.
As stated above we are definitely thinking this is the turbine manufacturer's properitary alloy and will be unable to duplicate and will end up paying the $45/# of waspaloy .. ouch!
RE: Please identify this material.
RE: Please identify this material.
But I think your right on track with the refractaloy. I had forgot we use to drill out the studs on turbine decks and the material of the studs then was refractaloy. After pulling an old job and finding the chemistry on those studs..see below
Carbon 0.02
Sulfur 0.002
Silicon 0.10
Manganese 0.11
Iron 27.1
Chromium 20.0
Moly 3.62
Copper 0.01
Aluminum 0.06
Titanium 2.90
Cobalt 13.2
Nickel Matrix
I think this is it.
Thank yall so much for the help!
RE: Please identify this material.
RE: Please identify this material.
Refractaloy 26 is a superalloy developed and used by Westinghouse (W) for gas and steam turbine bolting. It was commonly used thru the 1960’s and 1970's by W. The typical operating temperature range for this alloy is 1050 deg F up to 1250 deg F. It is a nickel-base alloy that is solution treated at 1950 deg F, oil quenched and aged at 1500 deg F for 4 hours.
RE: Please identify this material.
Thanks for the 411.
RE: Please identify this material.
Cheers
RE: Please identify this material.
RE: Please identify this material.