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About Metals

Metallic elements comprise approximately two thirds of the periodic table. Their applications are often based on properties that include tensile strength, electrical and thermal (heat) conductivity and malleability.

Metal Classifications

Alkali Metals

Alkali metals are the Group 1 elements of the period table and consist of lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). Elements in this group are highly reactive due to their single valence electron. The alkali metals are soft materials with relatively low melting points, and their applications typically exploit their high reactivity.

Alkaline Earth Metals

Alkaline metals are the Group 2 elements of the period table and consist of beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). Because of their lower activity and affinity for their other neighbor on the periodic table, the transition metals, they have found many applications and uses in alloys to produce lighter high strength metals.

Transition Metals

The bulk of elemental metals are found within the forty transition metals which include what are commonly referred to as the base metals, such as lead iron, nickel, tin, and copper and the precious or noble metals, such as silver, gold, platinum, and iridium. They are the most abundant and easiest to mine and refine of the metal groups. Due to their ease of extraction, they were the first metals to be mined, refined and commercially used by humans. Because they are of higher density than the s-block elements, they exhibit greater strength, higher melting points, and higher density and tensile strength.

Platinum Group Metals

Platinum group metals or platinoids include six (6) transition metal elements: ruthenium, rhodium, palladium, osmium, iridium, and platinum. These elements exhibit highly catalytic properties in addition to being resistant to oxidation. They are often found together in natural mineral deposits.

Refractory Metals

Refractory metals have high heat resistance and hardness properties. Five elements frequently defined as refractory metals include niobium, molybdenum, tantalum, tungsten, and rhenium. Common features that are shared among these metals are a melting point over 2000°C and high hardness at room temperature. Due to their high melting points, these metals are creep resistant at high temperatures. Refractory metals are prone to oxidation, however, oxide layers of the bulk metals are typically limited to the surface at room temperature.

Rare Earth Elements

The seventeen (17) rare earth elements include the Group 3 elements and the Period 6 lanthanide series elements consisting of scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium. These metals are finding increasing uses for defense, telecommunications, and energy applications as catalysts, phosphors and polishing compounds.

Post-Transition Metals

The post-transition metals or p-block elements are extremely soft low melting metals that include the semi-liquid metals gallium and indium, tin, thallium, lead, bismuth, radioactive polonium, germanium and antimony. They are used extensively in the formation of various electronic and optical crystalline compounds.

Metalloids

Metalloids are elements that exhibit both metallic and nonmetallic properties. These elements include boron, silicon, germanium, arsenic, tellurium, antimony, polonium and astatine. While the metalloids are brittle and not used alone for structural applications, they are commonly found in alloys, glasses, and semiconductor devices.

Base metals

Base metals refer to metals that are not resistant to oxidation, tarnishing, or corrosion. Examples include copper, zinc, tin, iron, nickel, and lead.

Noble metals

Noble metals are resistant to oxidation and corrosion in air and moisture. Examples include silver, platinum, gold, osmium, and palladium. Most noble metals are also considered precious metals, as they are relatively rare and of high economic value.

Metal Production

Mining and extraction of ores

Metals production involves mining and extracting metals from their ores. Further processing is required to purify, refine, and manipulate metals to derive the final product. Processes can involve shaping, alloying, heat treatment, joining, corrosion resistance and testing of metals.

Refining, processing, casting

Refining metals involves the final purification of impure metals. This is contrast to upstream processes that extract metals from ore and require additional purification or refining to produce a highly pure finished material. Pyrometallurical and hydrometallurigal process techniques can be used in refining.

Casting involves applying molten metal into a mold. Subsequent solidification results in metal shaped to the mold. This is economical and often requires little finishing after the metal is solidified. Process parameters that determine the success of the casting process include: shrinkage due to solidification of the metal, flow rate and flow effects of molten metal into the mold, cooling rate of the metal and the mold material influence on the casting process.

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Sputtering Targets

American Elements manufactures all metals on the periodic table in numerous forms and purities, standard sizes and dimensions, and can produce things to customer specifications for size and shape, surface area, composition, etc. Below is a list of forms we offer which is not exhaustive but just a sample - if you do not see something particular below please contact us to request a quote directly.

Available Metal Forms

  • Flat/Planar Forms: Board, Film, Foil, Microfoil, Microleaf, Paper, Plate, Ribbon, Sheet, Strip, Tape, Wafer
  • Preformed Shapes: Anodes, Balls, Bands, Bars, Boats, Bolts, Briquettes, Cathodes, Circles, Coils, Crucibles, Crystals, Cubes, Cups, Cylinders, Discs, Electrodes, Fibers, Filaments, Flanges, Grids, Lenses, Mandrels, Nuts, Parts, Prisms, Pucks, Rings, Rods, Shapes, Shields, Sleeves, Springs, Squares, Sputtering Targets, Sticks, Tubes, Washers, Windows, Wires
  • Microsizes: Beads, Bits, Capsules, Chips, Coins, Dust, Flakes, Grains, Granules, Micropowder, Needles, Particles, Pebbles, Pellets, Pins, Pills, Powder, Shavings, Shot, Slugs, Spheres, Tablets
  • Macrosizes: Billets, Chunks, Cuttings, Fragments, Ingots, Lumps, Nuggets, Pieces, Punchings, Rocks, Scraps, Segments, Turnings
  • Porous and Semi-Porous: Fabric, Foam, Gauze, Honeycomb, Mesh, Sponge, Wool
  • Nanoscale: Nanoparticles, Nanopowders, Nanofoils, Nanotubes, Nanorods, Nanoprisms
  • Others: Concentrate, Ink, Paste, Precipitate, Residue, Samples, Specimens

Health, Safety & Transportation Information

Safety guidelines for metal products vary widely depending both on the individual metal and its physical form. [For most metals, even normally inert ones like.... danger increases as size decreases, Powders and nanopowders - danger of ignition, inhalation. Some metals are potentially hazardous for particular forms - magnesium strips and ribbons. Consult individual product pages for information specific to a material. AE will also offer customers guidance on proper handling ,etc.]

Recent Research & Development for Metals

  • Destruction of chemical warfare agents using metal-organic frameworks. Mondloch JE, Katz MJ, Isley Iii WC, Ghosh P, Liao P, Bury W, Wagner GW, Hall MG, DeCoste JB, Peterson GW, Snurr RQ, Cramer CJ, Hupp JT, Farha OK. Nat Mater. 2015 Mar 16.
  • Comparison of Strut Coverage at 6 Months by Optical Coherence Tomography With Everolimus-Eluting Stenting of Bare-Metal Stent Restenosis Versus Stenosis of Nonstented Atherosclerotic Narrowing (from the DESERT Study). Picchi A, Musumeci G, Calabria P, Cresti A, Rescigno R, Aruffo A, Prati F, Limbruno U. Am J Cardiol. 2015 Feb 18.
  • Effect of Taper Design on Trunnionosis in Metal on Polyethylene Total Hip Arthroplasty. Tan SC, Teeter MG, Del Balso C, Howard JL, Lanting BA. J Arthroplasty. 2015 Feb 28.
  • Bare Metal Stents for Treatment of Extracranial Internal Carotid Artery Aneurysms: Long-term Results. Welleweerd JC, Jan de Borst G, de Groot D, van Herwaarden JA, Lo RT, Moll FL. J Endovasc Ther. 2015 Feb
  • Synthesis and characterization of [(CH3)2NH2][Na0.5Cr0.5(HCOO)3]: a rare example of luminescent metal-organic frameworks based on Cr(iii) ions. M?czka M, Bondzior B, Dere? P, Sieradzki A, Trzmiel J, Pietraszko A, Hanuza J. Dalton Trans. 2015 Mar 16.
  • Heparin-Engineered Mesoporous Iron Metal-Organic Framework Nanoparticles: Toward Stealth Drug Nanocarriers. Bellido E, Hidalgo T, Lozano MV, Guillevic M, Simón-Vázquez R, Santander-Ortega MJ, González-Fernández Á, Serre C, Alonso MJ, Horcajada P. Adv Healthc Mater. 2015 Mar 12.
  • Na4 IrO4 : Square-Planar Coordination of a Transition Metal in d5 Configuration due to Weak On-Site Coulomb Interactions. Kanungo S, Yan B, Merz P, Felser C, Jansen M. Angew Chem Int Ed Engl. 2015 Mar 13.
  • Altering Genomic Integrity: Heavy Metal Exposure Promotes Transposable Element-Mediated Damage. Morales ME, Servant G, Ade C, Roy-Engel AM. Biol Trace Elem Res. 2015 Mar 14.
  • Metal bioconcentration in the scleractinian coral Stylophora pistillata: investigating the role of different components of the holobiont using radiotracers. Metian M, Hédouin L, Ferrier-Pagès C, Teyssié JL, Oberhansli F, Buschiazzo E, Warnau M. Environ Monit Assess. 2015 Apr
  • Chemical and plant tests to assess the viability of amendments to reduce metal availability in mine soils and tailings. Rodríguez L, Gómez R, Sánchez V, Alonso-Azcárate J. Environ Sci Pollut Res Int. 2015 Mar 15.
  • Topological crystalline metal in orthorhombic perovskite iridates. Chen Y, Lu YM, Kee HY. Nat Commun. 2015 Mar 16
  • Modes of Failure in Metal-on-Metal Total Hip Arthroplasty. Fehring KA, Fehring TK. Orthop Clin North Am. 2015 Apr
  • True Boundary for the Formation of Homoleptic Transition-Metal Hydride Complexes. Takagi S, Iijima Y, Sato T, Saitoh H, Ikeda K, Otomo T, Miwa K, Ikeshoji T, Aoki K, Orimo SI. Angew Chem Int Ed Engl. 2015 Mar 13.
  • Biomass-derived nitrogen self-doped porous carbon as effective metal-free catalysts for oxygen reduction reaction. Liu X, Zhou Y, Zhou W, Li L, Huang S, Chen S. Nanoscale. 2015 Mar 16.
  • Towards Metal-Mediated G-Quartet Analogues: 1,2,4-Triazole Nucleotides. Withers JM, Telfer SG, Filichev VV. Nucleosides Nucleotides Nucleic Acids. 2015 Apr 3
  • Correction to "Positive Allostery in Metal Ion Binding by a Cooperatively Folded β-Peptide Bundle". Miller JP, Melicher MS, Schepartz A. J Am Chem Soc. 2015 Mar 16.
  • Metal-Organic Framework based upon the Synergy of Brønsted Acid Framework and Lewis Acid Center as Highly Efficient Heterogeneous Catalyst for Fixed Bed Reactions. Li B, Leng K, Zhang Y, Dynes JJ, Wang J, Hu Y, Ma D, Shi Z, Zhu L, Zhang D, Sun Y, Chrzanowski M, Ma S. J Am Chem Soc. 2015 Mar 16.
  • Sub-Parts Per Million NO2 Chemi-Transistor Sensors Based on Composite Porous Silicon/Gold Nanostructures Prepared by Metal-Assisted Etching. Sainato M, Strambini LM, Rella S, Mazzotta E, Barillaro G. ACS Appl Mater Interfaces. 2015 Mar 16.
  • Non-metal single/dual doped carbon quantum dots: a general flame synthetic method and electro-catalytic properties. Han Y, Tang D, Yang Y, Li C, Kong W, Huang H, Liu Y, Kang Z. Nanoscale. 2015 Mar 16.
  • Amending the Anisotropy Barrier and Luminescence Behavior of Heterometallic Trinuclear Linear [MII LnIII ?MII ] (LnIII =Gd, Tb, Dy