We are specialist in castings of whiteheart malleable iron. This material is ideal for technically advanced and complex products especially where a high degree of detail is required. We supply our castings in several qualities GJMW according to the standard EN1562. See below for further specifications.

Whiteheart malleable iron is cast with a high carbon content and at high temperatures. Herewith we can make castings with wall thicknesses from just 3 mm. Because of the special solidification process and heat treatment our castings are leak proof. As whiteheart malleable iron always gets a heat treatment , it is also suitable for deformation , bending and machining. Due to the decarbonisation during the heat treatment, the castings are also weldable. Whiteheart malleable iron is therefore an ideal material for piping , construction- and weldable products.

Advantages of whiteheart malleable iron are:

  • Freedom in form design (also with application of cores)
  • Low costs in serial production (near net shape, no subsequent elaboration)
  • Thin wall apllications (less weight , less costs)
  • Leak tight (ideal for gas- and liquid tight products)
  • Good weldability, hardening, formable and machinable (decarbonised surface)
  • Excellent zinc coating, coating, painting or other surface treatment

Click here for material qualities and mechanical properties of GJMW

Click here for mechanical and fysical properties of GJMW

Click here for tensile strenght of special material qualities in GJMW

Click here for different hardening methods of GJMW