PrimeCast 101 (Plastic / PS)

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Polystyrol-based plastic
Generation of master form for gypsum and ceramics shells for casting processes. Minimal ash residues after burning out. An additional infiltration with epoxy resin is recommended for vacuum casting.

State of starting material


Properties, applications and appearance

Field of application

Rapid Tooling

As master pattern for casting applications

patterns for urethane casting, pattern for RTV/Silicone, for QuickCast applications, wax pattern, pattern for vacuum casting, pattern for vulcanizing rubber molding, pattern for stone-in-place casting

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Manufacturing process

Laser Sintering
Parts are built on a plastic powder bed by a laser/ lasers that melt plastic powder layer by layer. Synonyms: SLS, Selective Laser Sintering

Physical, mechanical and thermal properties

Physical Properties

specific density: 0.77 g/cm3

Mechanical Properties

ultimate tensile strenght: 5.5 MPa
tensile modulus (Young's / E- ): 1,600 MPa
elongation at break: 0.4 %

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Data source: EOS

ATTENTION: The presented values are provided by the material manufacturers and are only indicative. Realized material properties may differ from these value for several reasons. Additively does not guarantee the correctness of this information in any way.