Saint Jean Industries develops its prototypes in-house with several options according to the quantity of parts to produce.

Cast iron and steel casting: Saint Jean Industries Laval uses shell molding (Croning) as an alternative to sand casting. This process allows the use of any metallurgy, with the advantage of achieving an excellent surface condition and very complex shapes. Our production site has the following technical capabilities:

  • Alloys: Steel, SiMo+, SiMo Chrome, D5S, HK30 (1.4848/1.4849), Z50
  • Max gross dimensions: 800 x 400 x 400 mm
  • Min/max gross weight: 0.2 to 8 kg,

Aluminum sand casting: a dedicated and secure workshop at the Saint Jean Industries Poitou site has the following technical capabilities:

  • Alloys: AS7G03-6, AS8U3G, AU5GT, AU5NKZR,
  • Max gross dimensions: 800 x 400 x 400 mm
  • Max gross weight: 50 kg
  • Prototyping, small to large production runs (< 1000 pièces/>n).

Billet machining: our 5-axis UGV machines produce complex parts from any material.

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Aluminum casting

Aluminum casting is the historical core business of Saint Jean Industries. Whether gravity or low-pressure casting, these two technologies are available at the majority of the group's sites. They enable the production of parts:

  • with complex shapes, hollow if necessary via the use of sand cores;
  • with average mechanical properties: Rm = 290 Mpa, Rp0,2 = 210 Mpa, A% = 6%.

All our tooling is designed and manufactured in-house, ensuring we are extremely responsive to your needs.

Gravity die casting: Our light, flexible and automated equipment delivers high production rates ranging from a few hundred to several thousand parts per item.

Low-pressure die casting: These facilities deliver high rates also through the use of multi-die molds thanks to a central supply unit.

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Cast iron and steel casting

Croning shell molding

The shell molding process is used by Saint Jean Industries Laval to produce cast iron and steel parts.

The advantages of shell molding:

  • The most accurate process using sand: it is possible to locally achieve dimensional tolerances of +/- 0.1 mm and a clearance of 0.5°.
  • Obtains rough parts close to the final shapes, meaning less machining and a reduction in weight.
  • Locally, low-thickness parts: 2.5 +/- 0.5 mm thanks to the excellent surface condition of the shells.
  • Can handle a wide range of materials, cast iron and steel parts can be produced using this process.
  • Modular production equipment, suitable for medium and large production runs.
  • Low-thickness shells, less sand to recycle.

For more information about this process, please request further documentation:

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cobapress process

Machining and assembly

Saint Jean Industries produces complete functions and assembled modules.

Our capabilities

  • Study and production of machining assemblies in-house.
  • Cutting tools designed and produced in-house to optimize cycle times.
  • Modular equipment according to parts.
  • Production of parts in small to medium production runs.
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Contact us

Saint Jean Industries SAS

Sales contact at head office

icon 1 180, rue des Frères Lumière

69220 Saint Jean D'Ardières

icon 2 04 74 66 68 00

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Saint Jean Industries Poitou

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ZI de Saint Ustre

86 220, Ingrandes sur Vienne


icon 2 +335 49 93 77 00

Saint Jean Industries Laval

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Route de Fougères, ZA des Dahinières

53 810, Changé


icon 2 +332 43 64 15 15

Saint Jean Industries Lorraine

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430, Route de Mirecourt

88270 Harol


icon 2+33 329 66 84 08

Saint Jean Industries d.o.o.

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Mile Budaka 1

35000 Slavonski Brod


icon 2 +385 35 405 320

A.G.R. GmbH

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Giessereistrasse 2

04519 Rackwitz


icon 2+49 342 94 70 60 10

Saint Jean Industries Valladolid

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Ctra. Medina del Campo-Mojados, Km. 25

47250 Mojados, Valladolid


icon 2+34 983 024 024