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Featuring more information about common base metals and common contact materials.
PolymetOur PRODUCTS & PROFILES
We provide custom clad metal overlays, inlays, edgelays, corelays, electrical contact tapes, thermostatic bimetals, conductive spring materials, shaped materials, and precious metal drawn wire.
OVERLAY & INLAY CLAD METAL
Overlay, Inlay, Edgelay, and Corelay clad materials allow precious and non-precious metals or alloys to be metallurgically bonded to a substrate, which can be a single alloy or an overlay clad combination. Inlay stripes are precisely positioned at the location specified by our customers. Inlays can be placed on one or both sides, at the edge, or any distance from the edge. When multiple overlays or inlays are specified, they can be of different thicknesses, widths, and materials. Clad metal offers minimized use of precious metals, combination of properties not available in a single alloy, and longer life than electroplated components.
CONTACT TAPE (ELECTRICAL)
Contact tapes are precision formed overlays designed to meet the requirements of high-speed, automatic welding equipment for the manufacture of electrical contact assemblies. By precisely controlling the thickness of the component materials, a composite material system can be designed that minimizes precious metal usage, maximizes conductivity, and provides a resistive backing for welding to form a contact assembly. Weld projections can be formed as rails, knurls, diamonds, waffles, t-shapes, and custom profiles. Contact tapes are typically traverse wound on plastic spools.
Polymet’s V-Slitting capabilities produce contact tapes with a width-to-thickness ratio as low as 2:1 while eliminating the burr-up, burr-down condition resulting from conventional slitting methods. After V-Slitting, the material is form rolled to provide a precise contact profile and to form a close tolerance rail or patterned backing to assure consistent weldability.
PRECIOUS METAL WIRE
Polymet draws fine wire in gold alloys, silver alloys, and Palmet alloys. Chemical compositions are precisely controlled to meet the customer’s specification. Finished wire is produced to meet their specifications for elongation, minimum break load, and tensile strength.
Pure gold wire is available in regular strength or high strength versions for thermosonic and ultrasonic bonding applications. Popular sizes range from 0.0005” to 0.0020”diameters. Larger diameters are also available.
7091 (Pd, Pt, Ag) and 7075 (Pd, Pt, Au, Ag) Palmet alloys are available in wire diameters from 0.002” to 0.020” diameters.
THERMOSTAT METALS, COILS & ASSEMBLIES & STAMPINGS
Thermostat metal spiral and helix coils are formed in-house from our thermostat metal for a wide variety of customer applications including thermometers, gauges, heating, refrigeration, basement ventilation, and automotive where high rates of thermal deflection and mechanical force is required.
Made from 0.004” to 0.125” thick TM, coils are made with a wide range of inside and outside diameters along with inside and outside tab configurations to suit our customer’s performance and space requirements. We offer automatic, semi-automatic, and hand-wound coils depending on volume and shape requirements.
MUSICAL FRET WIRE
Used by the world’s most renowned musical instrument makers, Polymet fret wire is specified in most models of high-quality string instruments. Most replacement frets in the marketplace are also made using Polymet fret wire.
Starting with the purest nickel-silver wire, Polymet’s fret wires are formed into the precise fret profile specified by our customer in a high precision, continuous, multiple step process to shape the fret wire to the proper surface quality, dimensional accuracy and aesthetic appearance. The wire is then wound into coils or cut-to-length to the customer’s specification.
