Elkonite®

Our Tungsten Copper Elkonite® alloys are commonly used in electrical & electrical/thermal applications. They are used for facing and inserts for flash and butt welding dies, projection welding electrodes, seam welding bearing inserts, facing for electro-forming and electro-forging dies, and EDM electrodes. 

Although they are somewhat more difficult to machine, Tungsten Carbide Copper materials (TC materials) provide high mechanical properties and excellent resistance to erosion. They are commonly used in oil devices to protect the contact from oxidation. 

MaterialRWMA ClassComposition
% by Weight
Density gr/ccDensity lb/in3Rockwell HardnessThermal ConductivityElectrical ConductivityUltimate Tensile StrengthCross Breaking Strength
Note: “typical” values listed – Not Material Specifications* heat treatable Cu www.resistanceweldsupplies.com
Elkonite® 1W3 10 56W / 44Cu 12.60 0.456 72-82 B 180 Btu / hr.ft.F 55% IACS 63,000 psi 110,000 psi
Elkonite® 3W3 10 68W / 32Cu 13.93 0.507 85-92 B 160 Btu / hr.ft.F 50% IACS 75,000 psi 130,000 psi
Elkonite® 3W53 12 68W / 32Cu* 13.87 0.504 105 B 90 Btu / hr.ft.F 30% IACS 120,000 psi 180,000 psi
Elkonite® 5W3 10 70W / 30Cu 14.18 0.512 88-95 B 160 Btu / hr.ft.F 49% IACS 85,000 psi 140,000 psi
Elkonite® 10W3 11 75W / 25Cu 14.80 0.533 96-99 B 150 Btu / hr.ft.F 45% IACS 90,000 psi 150,000 psi
Elkonite® 10W53 12 75W / 25Cu* 14.79 0.534 104-110 B 85 Btu / hr.ft.F 28% IACS 160,000 psi 200,000 psi
Elkonite® 20W3 12 78W / 22Cu - - - - - - -
Elkonite® 30W3 12 80W / 20Cu 15.56 0.562 99-104 B 145 Btu / hr.ft.F 43% IACS 98,000 psi 170,000 psi
Elkonite® 50W3 --- 90W / 10Cu 17.17 0.62 27 C 115 Btu / hr.ft.F 28% IACS 130,000 psi 180,000 psi
Elkonite® TC5 10 50WC / 50Cu 11.26 0.408 94 B 170 Btu / hr.ft.F 45% IACS 70,000 psi 140,000 psi
Elkonite® TC10 12 56WC / 44Cu 11.64 0.421 100 B 160 Btu / hr.ft.F 42% IACS 75,000 psi 160,000 psi
Elkonite® TC20 12 70WC / 30Cu 12.60 0.454 31 C 140 Btu / hr.ft.F 23% IACS 85,000 psi 180,000 psi
Elkonite® TC53 12 70WC / 30Cu* 12.60 0.454 45 C 70 Btu / hr.ft.F 18% IACS 150,000 psi 220,000 psi
Elkon® 100W 13 Pure Tungsten 19.28 0.700 39 C 100 Btu / hr.ft.F 31% IACS 150,000 psi 200,000 psi
Elkon® 100M 14 Pure Molybdenum 10.20 0.370 89 B 81 Btu / hr.ft.F 30% IACS 80,000 psi 120,000 psi
 

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RWMA Class 10

Elkonite® 1W3 and Elkonite® 3W3 Tungsten-Copper alloys are generally used for flash and butt welding die inserts where higher electrical and thermal conductivity is necessary and where a degree of malleability is desirable. These materials are also used (as a radius faced electrode) for spot welding low conductivity ferrous metals such as stainless steel.

Elkonite® 5W3 Tungsten-Copper and Elkonite® TC5 Tungsten Carbide-Copper alloys are normally used for light duty projection welding dies where welding pressured are not extreme.

RWMA Class 11

Elkonite® 10W3 Tungsten Copper is used for electrode and die inserts in most flash and butt welding dies and for projection welding dies where welding pressures and moderate. Most nut and stud welding applications use this alloy brazed on the electrode face. It is also used for light electrical upsetting, electroforging dies and seam welder bushing inserts.

RWMA Class 12

Elkonite® 30W3 Tungsten-Copper and Elkonite® TC10 Tungsten Carbide-Copper alloys are recommended for volume projection welding dies where the pressures involved are relatively high. Electrical upsetting of non-ferrous metals and low carbon steel is usually accomplished by the use of such Elkonite® materials as die facings. Cross-wire welding of large diameter wire and rod is accomplished with such Elkonite® materials.

Elkonite® 3W53 and Elkonite® 10W53 are heat treatable grades of Elkonite® Tungsten-Copper materials supplied in the fully heat treated condition. If silver brazed to a die backing, such Elkonite® materials should be heat treated after brazing. These harder grades are used primarily for electroforging and electrical upsetting dies, where temperatures and pressures are comparatively high. 

Elkonite® TC20 and Elkonite® TC53 are Tungsten Carbide-Copper materials and are extremely hard and wear resistance. Elkonite® TC20 material, while somewhat difficult to machine, may be machined using carbide tipped tools. Elkonite® TC53 material is a heat treatable grade of such high hardness that machining operations are impractical and the material must be ground. Such Elkonite® materials are customarily used for special applications of electrical upsetting and electroforging. 

RWMA Class 13

ELKON 100W (Pure Tungsten) is extremely hard and its ductility is relatively low. It cannot be machined but may be ground to the required shape. It does not alloy appreciably with nonferrous materials and is used for cross-wire welding of metals such as copper and brass. It is also for electroblazing electrode material and for some electrical upsetting operations. 

RWMA Class 14

ELKON 100M (Pure Molybdenum) is used principally for electroblazing electrode material and for cross-wire welding of nonferrous metals. It is not as hard as Elkon 100W material and may be machined or drilled to fit the parts to be joined. A typical application of this material, as an electrode, is the welding or brazing of braided or solid copper conductors to ferrous or nonferrous terminals, lugs or fittings. 

Elkonite® 10W3 Rectangular Bars – 8" or 12" Long

SIZEWEIGHT
1/8" x 1/8" 0.11 LBS/FT
 1/8" x 1/4" 0.22 LBS/FT
1/8" x 5/16" 0.27 LBS/FT
1/8" x 3/8" 0.32 LBS/FT
1/8" x 1/2" 0.43 LBS/FT
1/8" x 5/8" 0.54 LBS/FT
1/8" x 3/4" 0.65 LBS/FT
1/8" x 1" 0.86 LBS/FT
1/8" x 1 1/4" 1.08 LBS/FT
1/8" x 1 1/2" 1.29 LBS/FT
1/8" x 2" 1.73 LBS/FT
1/8" x 4" 3.45 LBS/FT
3/16" x 3/4" 0.97 LBS/FT
1/4" x 1/4" 0.43 LBS/FT
1/4" x 5/16" 0.54 LBS/FT
1/4" x 3/8" 0.65 LBS/FT
1/4" x 1/2" 0.86 LBS/FT
1/4" x 5/8" 1.08 LBS/FT
1/4" x 3/4" 1.29 LBS/FT
1/4" x 1" 1.73 LBS/FT
1/4" x 1 1/4" 2.16 LBS/FT
1/4" x 1 1/2" 2.59 LBS/FT
1/4" x 2" 3.45 LBS/FT
1/4" x 4" 6.9 LBS/FT
5/16" x 5/16" 0.67 LBS/FT
5/16" x 3/8" 0.81 LBS/FT
5/16" x 1/2" 1.08 LBS/FT
5/16" x 5/8" 1.35 LBS/FT
5/16" x 3/4" 1.62 LBS/FT
5/16" x 1" 2.16 LBS/FT
5/16" x 1 1/4" 2.7 LBS/FT
5/16" x 1 1/2" 3.23 LBS/FT
5/16" x 2" 4.31 LBS/FT
5/16" x 4" 8.63 LBS/FT
 
SIZEWEIGHT
3/8" x 3/8" 0.97 LBS/FT
3/8" x 1/2" 1.29 LBS/FT
3/8" x 5/8" 1.62 LBS/FT
3/8" x 3/4" 1.94 LBS/FT
3/8" x 1" 2.59 LBS/FT
3/8" x 1 1/4" 3.23 LBS/FT
3/8" x 1 1/2" 3.88 LBS/FT
3/8" x 2" 5.18 LBS/FT
3/8" x 4" 10.35 LBS/FT
1/2" x 1/2" 1.73 LBS/FT
1/2" x 5/8" 2.16 LBS/FT
1/2" x 3/4" 2.59 LBS/FT
1/2" x 1" 3.45 LBS/FT
1/2" x 1 1/4" 4.31 LBS/FT
1/2" x 1 1/2" 5.18 LBS/FT
1/2" x 2" 6.9 LBS/FT
1/2" x 4" 13.8 LBS/FT
5/8" x 5/8" 2.7 LBS/FT
5/8" x 3/4" 3.23 LBS/FT
5/8" x 1" 4.31 LBS/FT
5/8" x 1 1/4" 5.39 LBS/FT
5/8" x 1 1/2" 6.47 LBS/FT
5/8" x 2" 8.63 LBS/FT
5/8" x 4" 17.25 LBS/FT
3/4" x 3/4" 3.88 LBS/FT
3/4" x 1" 5.18 LBS/FT
3/4" x 1 1/4" 6.47 LBS/FT
3/4" x 1 1/2" 7.76 LBS/FT
3/4" x 2" 10.35 LBS/FT
3/4" x 4" 20.7 LBS/FT
1" x 1" 6.9 LBS/FT
1" x 1 1/4" 8.63 LBS/FT
1" x 1 1/2" 10.35 LBS/FT
1" x 2" 13.8 LBS/FT
1" x 4" 27.6 LBS/FT
1 1/4" x 1 1/4" 10.78 LBS/FT
1 1/4" x 1 1/2" 12.94 LBS/FT
2" x 2" 27.6 LBS/FT
 

Elkonite® 10W3 Round Bars - 8" or 12" Long

SIZEWEIGHT
1/8" 0.08 LBS/FT
3/16" 0.19 LBS/FT
1/4" 0.34 LBS/FT
5/16" 0.53 LBS/FT
3/8" 0.76 LBS/FT
7/16" 1.04 LBS/FT
1/2" 1.36 LBS/FT
9/16" 1.72 LBS/FT
5/8" 2.12 LBS/FT
 
SIZEWEIGHT
3/4" 3.05 LBS/FT
7/8" 4.15 LBS/FT
1" 5.42 LBS/FT
1 1/8" 6.86 LBS/FT
1 1/4" 8.47 LBS/FT
1 3/8" 10.25 LBS/FT
1 1/2" 12.19 LBS/FT
1 3/4" 16.6 LBS/FT
2" 21.68 LBS/FT
3" 39.20 LBS/FT
 

ELKONITE® 10W3 Round Disc

DIAMETERTHICKNESS
3/8" x 1/4"
1/2" x 1/4"
5/8" x 1/4"
3/4" x 1/4"
7/8" x 1/4"
1" x 1/4"
3/8" x 3/16"
1/2" x 3/16"
 
 
Elkonite®
Elkonite®

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