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Stainless Steel 17-4

Product information

EOS StainlessSteel GP1 is a stainless steel. Its chemical composition corresponds to US clas-sification 17-4, European 1.4542 and German X5CrNiCuNb16-4. This kind of steel is characterized by having good mechanical properties, especially excellent ductility in laser processed state, and is widely used in a variety of engineering applications. This material is ideal for many part-building applications (DirectPart) such as functional metal prototypes, small series products, individualised products or spare parts. 



  • good mechanical properties

  • excellent ductility



  • Functional prototypes

  • Series-production parts

  • Mechanical Engineering

  • Medical


20 or 40 Micron Layers

20-25 HRC As Built

45 HRC Post Hardened

Max Temp – 550°C, 1022°F



DMLS Finish Levels:

  • Unfinished (Includes removal of support material)

  • Shot Peened

  • Sand Blasted

  • Brushed Finish

  • Lightly Sanded

  • Medium Polished

  • Mirror Polishe


Additional Finishing Options:

  • Abrasive Blast (Grit & Ceramic)

  • Electrochemical Polishing

  • Abrasive Flow Machining (Extrude Hone) Polishing

  • Electroplating

  • Micro Machining Process (MMP)

  • CNC Finishing/Machining


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