GP1 (Metal / Edelstahl / stainless steel)

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Stainless steel with heat treatment
Corresponds to US classification 17-4 and European 1.4542. For functional metal prototypes, small series products, individualised products or spare parts. Can be machined, spark-eroded, welded, micro shot-peened, polished and coated. For parts requiring high corrosion resistance, sterilisability, etc., and particularly high toughness and ductility


US classification 17-4, European classification 1.4542

State of starting material


Properties, applications and appearance

Field of application

Rapid Manufacturing

Corrosion resistant

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Manufacturing process

Laser Melting
Parts are built in a metal powder bed through a laser (or lasers) melting the metal powder layer-by-layer. Synonyms: Selective Laser Melting, SLM, Direct Metal Laser Sintering, DMLS, Laser Cusing

Physical, mechanical and thermal properties

Physical Properties

typical accuracy: 20 - 50 µm
typical accuracy: 0 +/-0.2 %
smallest wall thickness: 0.3 - 0.4 mm
surface roughness Ra: 2.5 - 4.5 µm

Mechanical Properties

ultimate tensile strenght: 1,100 MPa
ultimate tensile strenght (z): 980 MPa
Lower yield strength ReL: 590 MPa
Lower yield strength ReL (z): 550 MPa

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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.