Of the platinum group metals (ruthenium, rhodium, palladium, osmium, iridium, and platinum), platinum is the least rare, and the most widely used, because of its outstanding properties - high melting point, appearance, ductility and exceptional corrosion resistance - platinum, even in the form of thin leaf, is resistant to corrosion and tarnishing on exposure to the atmosphere, including urban sulfur-bearing atmospheres. Some uses for platinum or its alloys include electrical contacts, resistance thermometers, precision potentiometer wire and spinnerettes for synthetic fibers. It is also used as a crucible liner for producing high-purity optical glass and for hydrogenation, as in the production of vitamins and other chemicals.


Boiling Point: 3800 oC

Melting Point: 1769 oC

Density at 20 oC: 21.45 g/cm3 (0.774 lb/in3)

Electrical Resistivity: 98.5 nΩ ⋅ m at 0 oC

Temperature Coefficient: 0.0039/K from 0 oC to 100 oC

Tensile Properties (Annealed at 700 oC):

    Tensile Strength: 125 - 165 MPa (18 - 24 ksi)

    Proportional Limit: <13.8 MPa (<2 ksi)

    Elongation: 30 - 40% in 50mm (2 in)

Tensile Properties (Hard Drawn, 50% Cold Worked):

    Tensile Strength: 205 - 240 MPa (30 - 35 ksi)

    Elongation: 1 - 3% in 50mm (2 in)

    Poisson’s Ratio: 0.39

Elastic Modulus at 20 oC (Annealed at 700 oC):

    Tension: Static: 171 GPa (24.5 x 106 psi)

   Dynamic: 169 GPa (24.5 x 106 psi)

Elastic Modulus at 20 oC (Hard Drawn, 50% Cold-Worked):

    Tension: Static: 156 GPa (22.6 x 106 psi)

Home Page Content Under Periodic Table


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Welcome to

ESPI was incorporated in 1950 with a mission to provide a competitive source for high purity metals, metal compounds and alloys. We are a valuable resource for virtually all major universities worldwide, global corporate R&D laboratories, thousands of domestic and international manufacturing companies and all U.S. government research laboratories. ESPI offers unique advantages often unavailable from larger organizations with no minimum order size & all business hour calls are handled by a competent sales representative. Automated answering systems and voice mail are not an option at ESPI.

Located within our fabrication facility is the melting department, forging & shaping areas, and the rod & wire, and sheet & foil departments providing the following manufacturing capabilities:

  • Casting of pure metals and alloys
  • Vacuum arc melting
  • Induction melting
  • Rod and wire drawing/extrusion
  • Sheet, foil and ribbon rolling
  • CNC milling and machining

Tel: 541-488-8311 - Email: - or click the "Live Help/Chat Now" icon, upper right.



ESPI produces and sells 68 elements and dozens of alloys in various forms for your custom needs. Click on the forms below to be directed to detailed information on manufacturing.



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