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  • 1.  "Gum Metal" Suppliers in U.S.

    Posted 08-30-2023 13:22

    I was hoping to ask whether there are U.S. based suppliers for "Gum Metal."?

    Thanks!



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  • 2.  RE: "Gum Metal" Suppliers in U.S.

    Posted 08-31-2023 09:26

    I have never heard of "Gum metal". Are you sure the alloy you are looking for is not gunmetal? Gunmetal is a bronze containing about 88% Cu, 8-10% Sn and 2-4% Zn. Just search for gunmetal suppliers and you will get a number of hits.

    Thanks



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    [Ratnesh] [Dwivedi]
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  • 3.  RE: "Gum Metal" Suppliers in U.S.

    Posted 08-31-2023 09:36

    http://www.federalmetal.com/



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    Robert Lando
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    Kalamazoo MI
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  • 4.  RE: "Gum Metal" Suppliers in U.S.

    Posted 08-31-2023 11:46

    Well, been a while since I've heard of gum metal. I don't think it's really a production item but you might reach out to Rohini Sankaran for ideas. She's done a lot of work with this material. 
    https://www.linkedin.com/in/rohinipsankaran



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    James Cotton
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  • 5.  RE: "Gum Metal" Suppliers in U.S.

    Posted 09-02-2023 00:27

    Thank you!



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    Kentaro Lunn
    Engineer
    Aedia LLC
    Port Hueneme CA
    (818) 667-0156
    ------------------------------

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  • 6.  RE: "Gum Metal" Suppliers in U.S.

    Posted 08-31-2023 17:49

    From Wikipedia: 

    Gum metal, also called TNTZ, is a unique titanium alloy with high elasticity, ductility, and yield strength. While originally developed with a composition of 23% niobium, 0.7% tantalum, 2% zirconium, and 1% oxygen, it can exist over a range of compositions and also include vanadium and hafnium.[1][2]

    Applying cold work to gum metal actually decreases its elastic modulus,[1] with reported shear moduli as low as 20 gigapascals (2,900,000 psi).[3] At the same time, cold work increases gum metal's yield strength.[1] By using a heat treatment after this cold work, some elasticity can be sacrificed for even greater strength, with yield strengths ranging as high as 2 gigapascals (290,000 psi), on par with some of the strongest steels.[3]

    "Gum metal" is a registered trademark of Toyota Central R&D Labs and was initially developed there. The results of that research were first published in April 2003.[3]

    References[edit]

    1. ^ Jump up to:a b c Saito, Takashi; Furuta, Tadahiko; Hwang, Jung-Hwan; Kuramoto, Shigeru; Nishino, Kazuaki; Suzuki, Nobuaki; Chen, Rong; Yamada, Akira; Ito, Kazuhiko; Seno, Yoshiki; Nonaka, Takamasa; Ikehata, Hideaki; Nagasako, Naoyuki; Iwamoto, Chihiro; Ikuhara, Yuuichi; Sakuma, Taketo (18 April 2003). "Multifunctional Alloys Obtained via a Dislocation-Free Plastic Deformation Mechanism". Science. 300 (5618): 464–7. CiteSeerX 10.1.1.74.9524. doi:10.1126/science.1081957. PMID 12702870.
    2. ^ Talling, RJ; Dashwood, RJ; Jackson, M; Dye, D (June 2009). "Compositional variability in gum metal". Scripta Materialia. 60 (11): 1000–3. doi:10.1016/j.scriptamat.2009.02.044.
    3. ^ Jump up to:a b c Nishino, Kazuaki (September 2003). "Super Multifunctional Alloy "GUM METAL"" (PDF). R&D Review of Toyota CRDL. 38 (3): 50. ISSN 1347-9652. Retrieved 29 July 2011.


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