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REFRACTORY METALS

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                              ROLLING RHENIUM FOIL                  ROLLING COPPER FOIL                   

Refractory metals are usually defined as those having extremely high melting points i.e. above 2000ºC. Through our distribution agreements with leading North American material processors such as H Cross Company inc and Electronic Manufacturing Company inc we can supply refractory metals in many different forms, such as wire, tape, foil and sheet to very high mechanical tolerances (±1.25µm/±0.00005"), tubing, machined, pressed and deep drawn components as well as assemblies using any combination of these processes.

MATERIALS AVAILABLE

Iridium (Ir), Molybdenum (Mo), Molybdenum Rhenium (Mo-Re), Palladium (Pd), Platinum (Pt), Rhenium (Re), Rhenium Tungsten (Re-W), Tantalum (Ta), Titanium (Ti), Tungsten (W), Zirconium (Zr).

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        HEAT TREATMENT FURNACES

RIBBON, TAPE, FOIL, SHEET & WIRE

Goodburn is the European agent for H Cross & Co. Based in Newark, New Jersey, H Cross is the world leader in the manufacture of high precision rolled materials. They have a vast experience in the processing of refractory metals and can work to the highest of tolerances, for example foils can be produced with variations in thickness of less than ± 1.25µm or ±0.00005".  In addition H Cross have drawing, slitting, annealing, heat treating and electro-polishing facilities.

Foils can be turned into tapes either by slitting or by rolling. Slit tapes or ribbons are produced from sheet or foil of the desired finished thickness. The end product has square edges and the length is limited by the starting size of the sheet or foil. Rolled tapes are produced from wire of a suitable diameter that is flattened to produce the desired thickness and width. The end product has rounded edges, is generally available in much longer lengths than with slitting and can be made to a higher tolerance.

Tape, foil and sheet are available in widths up to 50mm and thicknesses down to 0.0075mm in all of the materials listed here, and many more.

Round material below 1.5mm (0.060") diameter is generally referred to as wire. H Cross can draw wire in a wide range of materials to very close tolerances. Materials such as Tungsten work harden as they are drawn so careful annealing is required at each stage of the process.



MACHINED, STAMPED AND FORMED COMPONENTS
 

MACHINED COMPONENTS & ASSEMBLIES

We can also supply components manufactured using processes such as grinding, turning, milling, stamping, pressing and deep drawing for applications such as sintering trays, crucibles and boats, filaments, electrodes and contact caps, nozzles, agitators and stirrers, etc. Send us your drawing for a quotation or contact us for further information.
 

Welded Tungsten - Nickel - stranded Copper lead assemblies for electron tubes

WELDED ASSEMBLIES
 

In addition to manufacturing the components, we can also carry out assembly operations such as staking, brazing, welding, etc, enabling us to supply a fully finished, quality tested part to your production line. Contact us now for further details.

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