Machined Materials

Since 1982, Polis Précis, based in eastern France, has specialised in precision machining. Our investments are dedicated to machining hard materials.

We machine materials using electrical discharge machining (EDM), grinding, 5-axis milling, and hard turning. Our tools can be made of solid carbide, monolithic ceramic, brazed tungsten, shrink-fitted with cores, and sometimes bonded. Polishing is carried out at Polis Précis, either manually or using an in-house developed machine.

Carbide

We have carbide blocks and rods in stock.

Ceramics

We have the capability to machine the following ceramics: Silicon nitride – Si₃N₄, Alumina (Aluminium oxide) – Al₂O₃, Zirconia (Zirconium oxide) – ZrO₂, and EDM-machinable ceramics.

Advantages of ceramics: Low density, high-temperature resistance, exceptional hardness, and excellent corrosion resistance.

Tungsten

Tungsten is a heavy and hard metal, valued for its physical properties. The highest density we can achieve for a tungsten alloy is 18.5. A density of 19.3 corresponds to pure tungsten, which is extremely difficult to machine. This is why we primarily machine tungsten alloys.

Tantalum

Tantalum is the most resistant refractory material. It is highly acid-resistant and possesses a unique set of exceptional properties.

Titanium

Titanium is a metal with exceptional qualities for manufacturing parts used in the aerospace industry, as well as in many other sectors.

Aluminium

Polis Précis carries out precision machining of aluminium parts using high-precision 5-axis milling, electrical discharge machining (EDM), grinding, and turning for the manufacture of components for the aerospace industry.

Polycrystalline Diamond

Polis Précis machines polycrystalline diamond (PCD) bonded to silicon carbide, which has the property of offering exceptional wear resistance, high mechanical strength, and good performance at high temperatures.

Machined Materials