Hot die forging is the process of deforming a heated piece of non-ferrous metal between two dies. The latter are created in our very own tool shop, which is an integral part of the company. Specialising in the manufacture of made-to-order die-forged parts, we respond to each customer’s individual requirements for geometrically complex products. A combination of extensive expertise and complementary experience has allowed Prétat to make customised solutions its trademark.

Surface aspects

Porosity-free surfaces
Optional polishing and surface treatments

Tooling costs

Integrated tooling solutions

Mechanical resistance

Grain flow structure preserved
Mechanical properties improved

Unit cost

“Near net shape”, loss of material kept to a minimum
Optimised use of materials and machining time

Precise forging

Precise forging

With a thickness of 6.45 mm, Prétat achieves a precision of +/-0.05 mm. EN 586-3 prescribes a tolerance interval of between +0.5 and -0.35 mm. PRÉTAT’S ACCURACY IS 8.5 TIMES HIGHER THAN THE STANDARD REQUIRES.

Precise cutting

The EN 586-3 standard allows a parting of 1mm in height (on a piece of 200mm length). PRÉTAT ALLOWS A PARTING OF JUST 0.1MM IN HEIGHT.

Precise cutting

Precise shapes

Faithful execution of shapes and forms, as illustrated by these letters with a length of 1.18mm, a width of 1.7mm and a height of 0.3mm.


Advantages of hot die forging

  • Excellent dimensional stability
  • Lack of porosity
  • Uses less material
  • Precise distortion and therefore little or no final machining
  • Excellent quality and price-to-quality ratio
  • Enhanced mechanical properties thanks in part to the grain flow structure of the material

Grain flow structure preserved

This directional structure permits deliberate orientation of the given mechanical properties, first in the extrusion of bars, then in the material flow during deformation. The mechanical properties, enhanced by the grain flow structure, enable dimensions, weight, inertia and vibrations to be reduced.


Exemple de gamme Slug cut and cold bended
Exemple de gamme Forged part with the burr
Exemple de gamme Burr after deburring
Exemple de gamme Finish part after deburring