Technology / product information

SP Wire — High-Performance Electrode Wire for Precision EDM (Electrical Discharge Machining)
Electrode Wire "SP Wire" — The Optimal EDM Solution Delivering High Precision, High Efficiency, and High Durability
SP Wire is a high-performance electrode wire developed by Technos (Japan) specifically for wire electrical discharge machines (Wire EDM). Thanks to its unique structure and outstanding machining performance, it is highly regarded in fields that demand extremely high precision and micro-machining.

SP Wire's Structure and Key Features
- Hybrid 2-Layer Structure:
Core Material: High-strength piano wire is used to achieve excellent tensile strength.
Outer Layer: Brass plating optimizes discharge performance.
Combines the Advantages of Tungsten and Brass Wire: Offers exceptional machining efficiency.

- Flexible Size Range:
Wire Diameter: 0.03mm to 0.10mm
Typical Sizes: 50μm, 70μm, 100μm
Roll Length: 5,000m to 40,000m (ideal for long-duration continuous machining)


Excellent Advantages in EDM (Electrical Discharge Machining)
High Tension:
→ Reduces the risk of wire breakage, improving machining precision and speed.

High-Speed Machining Performance:
→ Achieves approximately twice the machining speed of brass wire, comparable to tungsten wire.

Smooth and Sharp Machining Surface:
→ Achieves surface roughness equal to or better than brass wire, enabling precise machining of fine shapes and corner radii.

Increased Machining Speed:
→ Due to narrower cutting clearance, a thicker electrode wire can be used, greatly improving machining speed.


High Durability:
→ Minimal wear on guide components reduces maintenance costs for EDM machines.

Excellent Compatibility with Hard Materials:
→ Prevents the HOMO phenomenon (unstable discharge or surface defects) commonly seen with tungsten wire.

Optimized Total Cost:
→ While the unit price is higher than brass wire, the high-machining speed, reduced reprocessing, and extended machine life lead to a reduction in overall machining costs.

Main Applications of SP Wire
Precision machining of lead frame molds and connector molds
Manufacturing of ultra-small gears and watch components
Machining of ultra-precision, fine parts for the electronics and medical fields
Packaging Specifications
5,000m to 30,000m per roll: 6 rolls per box (P3 bobbin)
40,000m per spool: 4 spools per box (P5 bobbin)


SP Wire is the optimal product for machining companies engaged in precision electrical discharge machining, offering high machining precision, excellent cost performance, and long-lasting durability.
Product Details, Pricing, and Technical Documentation
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