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New Southern Resistance Welding, Inc.

Group B - Refractory Metal Compositions


RWMA
Classification
Type of Material RWMA
Group B
Material
Hardness
Rockwell
Electrical
Conductivity
%I.A.C.S.
Ultimate
Tensile
Strength, psi
Cross
Breaking
Strength, psi
Class 10 Tungsten-Copper 10.74450 77 B 53 63,000 110,000
Class 10 Tungsten-Copper - 90 B 50 75,000 130,000
Class 10 Tungsten-Copper - 95 B 48 85,000 140,000
Class 11 Tungsten-Copper 11.74400 98 B 45 90,000 150,000
Class 12 Tungsten-Copper 12.74350 103 B 41 98,000 170,000
Class 12 Tungsten-Copper Alloy - 105 B 30 120,000 180,000
Class 12 Tungsten-Copper Alloy - 109 B 28 160,000 200,000
Class 12 Tungsten Carbide-Copper - 94 B 45 70,000 140,000
Class 12 Tungsten Carbide-Copper - 100 B 42 75,000 160,000
Class 12 Tungsten Carbide-Copper - 37 C 30 85,000 180,000
Class 12 Tungsten Carbide-Copper Alloy - 47 C 18 150,000 220,000
Class 13 Tungsten 13.74300 39 C 30 150,000 200,000
Class 14 Molybdenum 14.42300 90 B 30 80,000 120,000
Class 14 Tungsten-Nickel-Iron-Molybdenum - 30 C 11 133,000 240,000
Class 14 Tungsten-Nickel-Iron-Molybdenum - 34 c 13 140,000 280,000

Class 10 (Copper Tungsten)

     Class 10 material is recommended as facings or inserts for projection welding electrodes and flash and butt welding dies where high electrical conductivity is desirable and a degree of malleability is necessary.

Class 11 (Copper Tungsten)

     Class 11 (a harder material than Class 10) is recommend as facings and inserts for flash and butt welding dies and a general purpose projection welding electrodes. It may also be used as seam welder bearings inserts and facings for Electro-forming or Electro-forging, such as stainless steal.

Class 12 (Copper Tungsten)

     Class 12 material is specifically recommended for heavy duty projection welding electrodes and for die facings in Electro-forming and Electro-forging applications. It is suitable as die material for electrical upsetting of rivets and studs.

Class 13 (Tungsten)

Class 14 (Molybdenum)

     Class13 and Class 14 materials are recommended principally for welding or Electro-brazing non-ferrous metals having relatively high electrical conductivity.

     Cross wire welding of copper and brass wires and welding of copper wire braid to brass and bronze terminals are typical applications. Generally, special set-ups and procedures are required for this type of work.

 

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New Southern Resistance Welding
701 Thames Court
P.O. Box 1147
Pelham, Alabama 35124
Phone  (205) 663-1500 * Fax (205) 663-3221
(800) 933 NSRW (6779)

CMW electrodes, Tuffaloy ELectrodes, CMW, Tuffaloy