cast 2xx
cast 2xx
(OP)
Does anyone have any experience with stainless castings approximating the compositions of 201 or 202? How about cast equivalents to 2101 and 2003?
Michael McGuire
http://stainlesssteelforengineers.blogspot.com/





RE: cast 2xx
I have a call in to a friend in Europe. We'll see what he says about a cast 2101 type.
Have UNS numbers ever been assigned for cast 2xx alloys? I sure don't know of any.
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RE: cast 2xx
There has been a revisit to 201 castings in steel rolling mills for the parts which were originally cast in CF8. I have done a few of these replacements in recent times.
" All that is necessary for triumph of evil is that good men do nothing".
Edmund Burke
RE: cast 2xx
Do you have any specifications for these 2xx type alloys? Do they have UNS numbers? Is the manganese a problem for your refractories?
Michael McGuire
http://stainlesssteelforengineers.blogspot.com/
RE: cast 2xx
I use a basic lining in the furnace , hence high Mn content did not pose any major issue.
" All that is necessary for triumph of evil is that good men do nothing".
Edmund Burke
RE: cast 2xx
Michael McGuire
http://stainlesssteelforengineers.blogspot.com/
RE: cast 2xx
I haven't done much, just some pump stages.
The only duplexes that I ever cast were 2205 and 2304. The 2304 has low N, maybe 0.10%. The 2205 was usually 0.20-0.25%. We were melting small heats (50lb or 300lb) in induction furnaces and charging with about 1/3 scrap, 1/2 master alloy, balance virgin metals. We melted under a nitrogen blanket, but didn't bubble any through the metal.
I never melted any 2xx alloys, but we did melt a Ni-Resist grade with Mn sub for part of the Ni. It worked, but in those days it wasn't worth the effort.
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Rust never sleeps
Neither should your protection
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RE: cast 2xx
Michael McGuire
http://stainlesssteelforengineers.blogspot.com/
RE: cast 2xx
However,watch out for the hounds from the powerful Ni lobby.
" All that is necessary for triumph of evil is that good men do nothing".
Edmund Burke
RE: cast 2xx
Michael McGuire
http://stainlesssteelforengineers.blogspot.com/
RE: cast 2xx
RE: cast 2xx
When I work with customers on alloy changes my mantra is that it has to make long term sense, "Would you still do if Ni were $2/lb?"
My basic logic goes something like this. What are you using now, 304. Can you make the part lighter if the alloy is stronger? If not then look into 439 and 201. If you can then LDX2101 may be the better option.
If you are using 316, then AL2003 is the most direct alternative. If you want more corrosion resistance, and you can take some weight out then 2205 is an option.
Do you need higher corrosion resistance. How about using a superferritic in place of a superaustenitic. Even if you just do this for a portion of your assembly you can save a lot.
If you are going to high temperatures or working in aggressive environments then nothing beats Ni. Just make sure that you use it smart.
Oh by the way, word is that Mo will top $30/lb in May.
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm
RE: cast 2xx
I have lost a number of orders as I quote using virgin metals!!
" All that is necessary for triumph of evil is that good men do nothing".
Edmund Burke
RE: cast 2xx
I'll bet that many of those jobs that you lost never happened. With prices fluctuating so much how can anyone plan.
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Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm
RE: cast 2xx
Michael McGuire
http://stainlesssteelforengineers.blogspot.com/
RE: cast 2xx
RE: cast 2xx
knowledgeable and responsible end users like you should make a difference in material selection. When a vendor like me suggests it is always viewed with suspicion.Convinicing is tough for there are commercial implications like damage to equipment or plant interruptions.
" All that is necessary for triumph of evil is that good men do nothing".
Edmund Burke
RE: cast 2xx
Michael McGuire
http://stainlesssteelforengineers.blogspot.com/