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EDM Metallics
MWI offers a full compliment of metallic electrode materials and sizes. We carry a full range of brass,
copper, tungsten, tungsten carbide, copper tungsten and TELCO (tellurium copper) available for
immediate shipment.
Specification |
Free Cutting
Brass |
Hard Drawn
Copper |
Telco |
| Relative Machinability Rating |
100% |
20% |
90% |
| Electrical Conductivity |
26% |
100% |
90% |
| Density (lbs. per cu. inch) |
.307 |
.323 |
.323 |
| Approx Wear Ratio into Steel |
1:01 |
2:01 |
2:01 |
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TELCO ELECTRODES
Recommended Usage:
Telco is a machinable copper for EDM. As an electrode material, Telco performs the same as
regular copper. However, Telco offers the distinct advantage that is 90% machinable as compared
to regular copper (refer to chart on the right). Telco Electrodes can be machined much faster and
easier as compared to regular copper.
- Precision Copper Tubing
- Precision Brass Tubing
- Precision Copper Rods
- Precision Brass Rods
- Multi-Channel Tubing
- Copper Centerless Drills
- Silver Tungsten ST-20
Copper Tungsten "CT-3"
Recommended Usage:
Copper Tungsten CT -3 is a sintered and infiltrated electrode material which combines the strength,
high density, and high melting point of Tungsten with the excellent electrical properties and good
resistance against DC arcing of copper to form an unbeatable combination.
Typical Average Properties
| 1) Density | 14.0 gms/cc |
| 2) Rockwell Hardness | 90 B |
| 3) Electrical Conductivity | 48% I.A.C.S. |
| 4) Copper Content | 25-30% |
| 5) Tungsten Content | 70-75% |
| *Special Note: CT-3 thin sheets from .001 thick through .055 have a 40% Copper/60% Tungsten content |
TC-9 Tungsten Carbide Tubing
TC-9 Tungsten Carbide electrodes are recommended as an alternative to brass, copper, or copper
tungsten for EDMing holes. The extreme high density, strength, good conductivity, and high
melting point of TC-9 make it an excellent choice for EDMing production holes where electrode
wear is a factor.
Pure Tungsten Wire TU-4
Tungsten wire TU-4 is recommended for EDMing small diameter holes less than .100 deep. Due to
its strength, high density, and high melting point, TU-4 electrodes are more resistant to
electrode wear than any other electrode material.
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| We have 6 divisions across the continental Unites States and Canada to serve your needs. |
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| Get back to work and leave your technical questions with us. |
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| MWI offers same-day service on all regular orders and standard UPS next-day delivery on all special orders. |
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| MWI is more than just EDM. |
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