What Is EDM?
Electrical Discharge Machining (EDM) is a machining technology based on the principle of electrical discharge. Depending on the specific machining needs and application scenarios, EDM technology can be divided into various types, including :1,wire electrical discharge machining, 2,conjugate rotary EDM, 3,EDM forming, 4,surface strengthening treatment through EDM.
WIDIT EDM Electrode
WIDIT focuses exclusively on the research and development, as well as the production of forming electrodes and rotary disk electrodes. Our electrode materials, including chromium copper, copper tungsten 70, copper tungsten 75, copper tungsten 80, copper tungsten 90, and silver tungsten, cover most applications in the industrial field. Choosing the correct electrode material is a key factor in achieving high precision and efficiency in EDM processing.
EDM Tungsten Copper Discharge Electrode
Tungsten Copper Electrodes Rod | Tungsten Copper Square Bars | Tungsten Copper Discs |
 |  |  |
| D1.0-60mm x 200mm or 300mm(L) Dia.0.5x100 Dia.0.6x100 Dia.0.7x100 Dia.0.8x100 Dia.0.9x100 |  | Customize various sizes according to customer drawings and requirements |
| WIDIT can manufacture various sizes and shapes of tungsten copper materials according to customer requirements, and the copper content in the electrodes can also be adjusted between 10% and 50% based on customer needs. | ||
Tungsten Copper Materials Technical Indicators
| Product Name | Grade | Copper% | Tungsten Content % | Density g/cm3 | Electrical Conductivity IACS% | Hardness HB≥ |
| Copper Tungsten 50 | CuW50 | 50±2 | Balance | 11.85 | 54 | 115 |
| Copper Tungsten 55 | CuW55 | 45±2 | Balance | 12.3 | 49 | 125 |
| Copper Tungsten 60 | CuW60 | 40±2 | Balance | 12.75 | 47 | 140 |
| Copper Tungsten 65 | CuW65 | 35±2 | Balance | 13.3 | 44 | 155 |
| Copper Tungsten 70 | CuW70 | 30±2 | Balance | 13.8 | 42 | 175 |
| Copper Tungsten 75 | CuW75 | 25±2 | Balance | 14.5 | 38 | 195 |
| Copper Tungsten 80 | CuW80 | 20±2 | Balance | 15.15 | 34 | 220 |
| Copper Tungsten 85 | CuW85 | 15±2 | Balance | 15.9 | 30 | 240 |
| Copper Tungsten 90 | CuW90 | 10±2 | Balance | 16.75 | 27 | 260 |
In production practice, hard metal is often referred to as tungsten steel, which is the best material for CNC metal cutting tools. Its hard and wear-resistant nature makes it difficult to process, and electrical discharge machining (EDM) of tungsten steel is a commonly used method. CNC cutting tools need to be sintered from high-quality tungsten steel, while the molds for CNC rotatable tool inserts require EDM processing with pore-free tungsten copper electrodes. Below are products processed using our tungsten copper electrodes：
