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  • exotic materials

    Just wondering if they have figured out the alloy found in those crashed and confiscated ufos- or has it been concluded that it's imaginatium?

    Other than that, there are some cool materials- clear aluminum is one, nitinol is another- there must be some others with unique properties by now. Anybody know of them? What are your pet exotic materials?
    I seldom do anything within the scope of logical reason and calculated cost/benefit, etc- I'm following my passion-

  • #2
    I suspect you're not going to find much of that in the HOME SHOP machinists' group. "Exotic" materials tend to be both very expensive and very difficult to machine- and if you don't absolutely require it for your project, it tends to be a waste of both money and effort.

    Titanium isn't really all that "exotic" these days, and even here, few HSM'ers use or have ever used it.

    The most exotic thing I've ever dealt with was probably some Inconel. Mean stuff to deal with- think of 316 stainless except even gummier.

    Doc.
    Doc's Machine. (Probably not what you expect.)

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    • #3
      My son-in-law's company does Defense Dept. and NASA work pretty much exclusively. He's frequently describing what I'd certainly call exotic or newly developed metals or alloys. One he has mentioned a few times is "Eglin Steel" (name probably has a connection to Eglin AFB in N. Fla.); Don't remember his exact comments about its machinability, but as I recall it wasn't favorable.
      Lynn (Huntsville, AL)

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      • #4
        "Elgin Steel" probably the commercial brand "Elginloy". It's a very high cobalt containing steel, with tungsten, chrome, cold worked into flats, strips, and wire. It's so hard that it's difficult to cut, even with carbide. It's used for highly stressed springs as I use it for. Has a tensile strength of 300Kpsi and higher. Has a very high corrosive resistance to many chemicals that high chrome materials will not hold up to from hydrogen enbrittlement. Last price I saw was around $100 lb. And because of the density, it's not much material for the price they get for it. Ken

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        • #5
          Inconel is enough nasty for me. Tungsten carbide is probably hardest/nastiest/most difficult material that I have machined.

          And I have some Rene 41 wire that would also qualify for nasty machinability.

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          • #6
            Originally posted by darryl View Post
            Just wondering if they have figured out the alloy found in those crashed and confiscated ufos- or has it been concluded that it's imaginatium?
            Always wondered what a UFO tastes like...

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            • #7
              Originally posted by 3 Phase Lightbulb View Post
              Always wondered what a UFO tastes like...
              They are shaped like a pie.

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              • #8
                There have been several types of "exotic" materials found in UFO wreckage.

                Nutsium

                crazyfanaticium

                stupidium

                Gullibilityium

                and the two most often - BoyhaveIgotabridgetosellyousium and IwatchthosestupidUFOshowsium
                The shortest distance between two points is a circle of infinite diameter.

                Bluewater Model Engineering Society at https://sites.google.com/site/bluewatermes/

                Southwestern Ontario. Canada

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                • #9
                  I still consider titanium to be exotic, it's got so many amazing qualities, plus the flammable thing

                  there's allot of incredible materials to choose from nowadays including certain plastics and carbon fiber,

                  carbon fiber nano-tube I think is the only material that could support its own weight enough to reach out into the outer atmosphere - that's pretty impressive esp. when you can get a set of handlebars for your mt. bike made from them.

                  I like building advanced detailed projects and sorting through all the information to make a choice at what would work best and for where - you end up with a wide variety of materials all gathered together in one little place working in harmony --- that's super cool.

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                  • #10
                    Originally posted by loose nut View Post
                    There have been several types of "exotic" materials found in UFO wreckage.

                    Nutsium

                    crazyfanaticium

                    stupidium

                    Gullibilityium

                    and the two most often - BoyhaveIgotabridgetosellyousium and IwatchthosestupidUFOshowsium
                    Exactly. Those materials (?) are only found in Fantasyland...
                    Keith
                    __________________________
                    Just one project too many--that's what finally got him...

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                    • #11
                      Originally posted by 4GSR View Post
                      "Elgin Steel" probably the commercial brand "Elginloy". It's a very high cobalt containing steel, with tungsten, chrome, cold worked into flats, strips, and wire. It's so hard that it's difficult to cut, even with carbide. It's used for highly stressed springs as I use it for. Has a tensile strength of 300Kpsi and higher. Has a very high corrosive resistance to many chemicals that high chrome materials will not hold up to from hydrogen enbrittlement. Last price I saw was around $100 lb. And because of the density, it's not much material for the price they get for it. Ken
                      We're probably talking about the same thing, ...but the word is "Eglin" not "Elgin."

                      Though, maybe not; our friend google does hit on elgin steel, but it looks to be mostly in connection with "Elgin" watches.

                      But this is what I was referring to: https://www.google.com/search?client...&q=eglin+steel

                      "Named after the Eglin Air Force Base; the US Air Force was involved in its development. ... A high-strength, high-performance, low-alloy, low-cost steel."
                      Last edited by lynnl; 04-25-2019, 12:43 PM.
                      Lynn (Huntsville, AL)

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                      • #12
                        Unobtainium is the hardest to find. An easier alloy which I have turned, milled, drilled and tapped is Densimet tungsten heavy metal. I have some 1/2" ground rods, turned to 12mm halfway along their length which have been made into boring bars, left and right hand, and threading bars also R & L. I have a couple of slabs of it, about 12" long by 4" by 1/2" thick, I have yet to think of a use for them.
                        My old firm used to machine Maraging steel and ultra high tensile steel, 250 UK tons per square inch
                        Last edited by old mart; 04-25-2019, 12:43 PM.

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                        • #13
                          "250 UK tons per square inch". Oh, that's metric. That's like 500 pounds imperial, isn't it?

                          When I first saw the thread title, I thought it was going to be about sex toys or something.

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                          • #14
                            Originally posted by lynnl View Post
                            We're probably talking about the same thing, ...but the word is "Eglin" not "Elgin."

                            Though, maybe not; our friend google does hit on elgin steel, but it looks to be mostly in connection with "Elgin" watches.

                            But this is what I was referring to: https://www.google.com/search?client...&q=eglin+steel

                            "Named after the Eglin Air Force Base; the US Air Force was involved in its development. ... A high-strength, high-performance, low-alloy, low-cost steel."
                            Yep, two totally different materials. My eyesight and delyicus (sp) nip me again!

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                            • #15
                              Exotic pretty much means foriegn, so UFO materials would likely qualify. I've never had the pleasure....we do work with Hardox plate that is imported so I suppose qualifies as exotic
                              .

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