Within the EDM Slow Wire market, the type dimension is divided into four principal material categories: copper, brass, nickel‑plated, and titanium wire. Copper wire, characterized by high electrical conductivity and low cost, accounts for roughly 45 % of total volume, driving the bulk of market revenue in low‑precision machining. Brass, offering superior wear resistance, contributes about 30 % and is favored in applications requiring longer tool life, such as deep‑hole drilling. Nickel‑plated wire combines the conductivity of copper with a protective coating that reduces oxidation, capturing an estimated 15 % share and supporting high‑precision aerospace components. Titanium wire, though the most expensive, provides exceptional stiffness and thermal stability, representing the remaining 10 % and serving niche markets that demand minimal thermal distortion. Collectively, these material types shape the overall EDM Slow Wire market size by aligning cost structures, performance attributes, and end‑use requirements, a core element of the broader EDM Slow Wire segmentation analysis.