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 DIJET Cutting tool |
Milling Machine Tooling System |
Turning Tools & Accessories |
EDM |
Brass & Copper Tubes |
 Turning Inserts |
Brass Wire Moly Wire |
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A Brass Tube Brass EDM Tubes are used on the largest variety of electrically conductive materials and metals to small hole drill. If you are not quite sure which electrode material to start out with, Brass would typically cover MOST material types. Because of the molecular composition of Brass, it will remove material at the fastest rates when applied to different alloys, tool steels, stainless steels and rare metals. Brass electrodes tend to wear out much faster compared to Copper Electrodes, which means the Brass electrode will disintegrate at the point of which the spark leaves the electrode to the point of contact on the work-piece, this should be taken into consideration on long running hole burns or EDM Holes that are very deep. |
When EDM Drilling extremely hard metals such as Carbide, or Tungsten Carbide; Brass tubing is not recommended because of it’s fast disintegration rate.
The Brass we use is 99.995% pure and is comprised of approximately 70% copper and 30% zinc.
B Copper Tube
Copper tube can be used to EDM hole drill in all material types. Copper, because of it’s molecular composition tends to last longer during hole burning compared mostly to Brass.
One unique characteristic of Copper is that it is ideal when small hole drilling through very hard materials such as Carbide and Tungsten. This is because it has a slower and more steady burn rate that will measure up stronger. When EDM hole burning through a depth to width ratio of greater than 100 to 1 this also tends to be ideal because a more controlled hole burn will leave a more accurate and straighter hole.
The Copper tubing that we supply is 99.99% pure.
Single Hole Electrode Tubes vs. Multi-Channel Electrode Tubes
Another variable which determines the ultimate success of the electrode properly EDM Hole Burning through the material or work piece is if the Brass Electrode or Copper Electrode tube has a “single hole” or a “multi channelled hole” running directly through the ID or (Internal Diameter) of the electrode.
Basically put; in order for an electrode to perform the way it’s supposed to, it depends on the type of hole going through the centre of the electrode. This type of hole has a few purposes. One purpose is to direct water or coolant through the centre of the electrode. This keeps the entire length of the Brass or Copper Tube from overheating and burning up. If the electrode heats up too much it can become “soft” and warp thus not creating a straight line or a consistent and accurate EDM Hole.
The main reason that determines whether an EDM Electrode tube would have a “single hole” or a “multi-channel” / “coreless” hole is that when a hole is EDM Machined into a part it could be a “thru hole” or a “blind hole”. Blind holes are not drilled complete to the other side so a “slug” or a piece of material is still left untouched at the bottom of the hole.
Single Hole & Single Channel EDM Tubes
Brass EDM Tubing and Copper EDM Tubing can both be Single Hole. Single Hole Electrodes are usually cheaper in price because there is less of that material in the electrode. Single hole tubing is recommended only for hole burning applications that require a hole to be drilled entirely through the part.
This chart illustrates the relative OD (outside diameter) compared to the ID (inside diameter of the respective electrode.
Sizes Available in Ready Stock
| Name | Specifiation | Length | Packing | |
| Material Type | Outer Dia | Inner Dia | MM | Pcs/Packet |
| Brass / Copper Tube | 0.20 | 0.10 | 200mm | 50pcs in a tube |
| Brass / Copper Tube | 0.30 | 0.12 | 400mm | 100pcs in a tube |
| Brass / Copper Tube | 0.40 | 0.15 | 400mm | 100pcs in a tube |
| Brass / Copper Tube | 0.50 | 0.18 | 400mm | 100pcs in a tube |
| Brass / Copper Tube | 0.60 | 0.20 | 400mm | 100pcs in a tube |
| Brass / Copper Tube | 0.70 | 0.20 | 400mm | 100pcs in a tube |
| Brass / Copper Tube | 0.80 | 0.30 | 400mm | 100pcs in a tube |
| Brass / Copper Tube | 0.90 | 0.30 | 400mm | 100pcs in a tube |
| Brass / Copper Tube | 1.00 | 0.30 | 400mm | 100pcs in a tube |
| Brass / Copper Tube | 1.00~1.40 | 0.40 | 400mm | 100pcs in a tube |
| Brass / Copper Tube | 1.50~1.70 | 0.50 | 400mm | 100pcs in a tube |
| Brass / Copper Tube | 1.80~1.90 | 0.60 | 400mm | 100pcs in a tube |
| Brass / Copper Tube | 2.00 | 0.60 | 400mm | 50pcs in a tube |
| Brass / Copper Tube | 2.10 | 0.70 | 400mm | 50pcs in a tube |
| Brass / Copper Tube | 2.20 | 0.70 | 400mm | 50pcs in a tube |
| Brass / Copper Tube | 2.30~2.50 | 0.80 | 400mm | 50pcs in a tube |
| Brass / Copper Tube | 2.60~2.80 | 0.90 | 400mm | 20pcs in a tube |
| Brass / Copper Tube | 2.90~3.00 | 1.00 | 400mm | 20pcs in a tube
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Multi-Channel EDM Tubes
Multi-Channel Tubes are used for EDM Machining a blind hole. The internal channels are designed to burn away any material left at the bottom of the hole. This is because the electrode has material inside the flushing hole that is used to disintegrate the work piece material.
Since the electrode spins around at a very high rate, the internal diameter has electrode material to disintegrate metal in the centre of the cavity. This will not leave any slug or piece of material at the bottom of the hole.
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