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General Information

Investment casting (silica sol process)
Investment casting offers unlimited freedom in design and material choices. Typical applications can be found in the automotive, pump and food industry, architecture, and general industrial engineering.


  • Precise tolerances
  • Thin walls are possible
  • Fine surface structure
  • Complex shapes can be achieved without draft angles
  • Small marks can be cast very clearly, such as letters or company logos
  • Suitable for a wide variety of materials

Possible alloys

  • Stainless steel and duplex grades (such as 304 (L) or 316 (L))
  • Carbon steel, tool steel, austenitic manganese steel and heat-resistant steel
  • Various kinds of non-ferrous steel alloys (such as aluminium or copper)

Technical specifications

  • The commonly used casting tolerance table for linear dimensions is CT6 according to ISO 8062 (wall thicknesses CT7)
  • Weight: 0.005 – 120 kg
  • Casting surface roughness: Ra 6.3 μm
  • Maximum dimensions: 1000 x 620 x 380 mm
  • Casting wall thickness: ≥ 3 mm, locally 0.5 mm can be reached
  • Angle tolerances: ± 1°
  • The geometric tolerances that are required for the function should be specified in the drawing

Finishing options

  • Pickling and passivation
  • Electrolytic polishing
  • Vibra-polishing
  • Blasting
  • Electrolytic zinc plating
  • Hot-dip galvanising
  • Chrome plating
  • Mirror polishing
  • Dull polishing

As BIC, we support you in the delivery of forged steel and aluminum forged parts as well as cast parts made of various materials such as grag cast, nodular cast iron, cast steel, stainless steel, aluminum, iron and copper. BIC supports its customers in the fields of automotive, commercial vehicles, agricultural machinery, pumps, general mechanical engineering, rail technology, food technology, construction technology, vehicle construction, hydraulic components, drive and conveyor technology, compressors, medical technology. BIC is your manufacturing partner for cast parts made of ferrous and non-ferrous metals. We have the capacity to produce parts from 100 grams up to 30,000 kg.