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Catalog

Refractory Metals

In Stock For Same Day Shipping

We stock Refractory Metals in standard and custom cut sizes to meet your specific application needs.  Available in Rod, Bar and Disc.

We additionally offer same day shipping to get them to you fast.

Getting you the products you need – when you need them, is what makes Resistance Welding Machine & Accessory stand apart from its competition.

They come in limited sizes please call for quote (269) 428-4770
Refractory Metals – Available For Special Applications

RWMA CLASS 10

RWMA CLASS 10RWMA No.RWMA GENERAL USE *RWMA DESCRIPTION
COPPER-TUNGSTEN10.74450Flash and butt welding electrodes where good electrical and thermal conductivity is necessary and where a degree of malleability is desired.A powder metallurgical blend of 45% copper and 55% of the refractory metal tungsten. This combination produces dense, hard metals of superior wear resistance and strength at elevated temperatures. In addition, they possess good thermal and electrical conductivity.

RWMA CLASS 11

RWMA CLASS 11RWMA No.RWMA GENERAL USE *RWMA DESCRIPTION
COPPER-TUNGSTEN11.74400Flash and butt welding electrodes where good electrical and thermal conductivity is necessary and where a degree of malleability is desired.A powder metallurgical blend of 25% copper and 75% of the refractory metal tungsten. This combination produces dense, hard metals of superior wear resistance and strength at elevated temperatures. In addition, they possess good thermal and electrical conductivity.

RWMA CLASS 12

RWMA CLASS 12RWMA No.RWMA GENERAL USE *RWMA DESCRIPTION
COPPER-TUNGSTEN12.74350Heavy duty projection welding electrodes, electro-forming and electo-forging electrodes facings for upsetting of studs and rivets, cross wire welding of large diameter wire and rod.A powder metallurgical blend of 20% copper and 80% of the refractory metal tungsten. This combination produces dense, hard metals of superior wear resistance and strength at elevated temperatures. In addition, they possess good thermal and electrical conductivity.

RWMA CLASS 13

RWMA CLASS 13RWMA No.RWMA GENERAL USE *RWMA DESCRIPTION
TUNGSTEN13.74300Cross wire welding of copper and brass, resistance brazing and some upsetting. Welding of braided copper wire to other materials.Tungsten is extremely hard and has low ductility. It cannot be machined with cutting tools but can be ground to required contours. It does not alloy with nonferrous materials. Tungsten has the highest melting point (3,422 °C, 6,192 °F) of all the metals.

RWMA CLASS 14

RWMA CLASS 14RWMA No.RWMA GENERAL USE *RWMA DESCRIPTION
MOLYBDENUM14.42300Cross wire welding of copper and brass, resistance brazing and some upsetting. Welding of braided copper wire to other materials.Not as hard as Class 13 and can be drilled and machined to special contours. With relatively good thermal conductivity, molybdenum has a melting point of 2,623 °C (4,753 °F) and has one of the lowest coefficients of thermal expansion among commercially used metals.

RWMA CLASS 20

RWMA CLASS 20RWMA No.RWMA GENERAL USE *RWMA DESCRIPTION
DISPERSION STRENGTHENED COPPER20.15760 Welding of metallic coated metal such as galvanized steel, terne plate, etc.A dispersion of aluminum oxide within a copper matrix that exhibits good resistance to softening,and room temperature properties consistent with RWMA Class 2.

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