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This study identifies the optimal feedstock composition for producing high-quality components via fused deposition modelingFused deposition modeling (FDM) using 17-4PH stainless steelStainless steel powder, paraffin wax, and stearic acid. Rheological measurements showed shear thinning behavior in all compositions, with viscosityViscosity increasing up to 20 times as metal content rises. To achieve high-quality components in the printing phase, increasing the percentage of metal requires a rise in printing temperatureTemperature and flow rate, while decreasing printing speed. Mechanical and physical properties were evaluated through three-point bending tests and densityDensity measurements. Increasing metal content from 93 to 95.5wt.% improved green parts’ flexural strength from 3.34 to 4.45 MPa, flexural modulus from 146 to 531 MPa, and densityDensity from 5.04 to 5.72 g/cm3. Heat treatment results revealed that a metal percentage exceeding 95wt.% is required to maintain sample geometry. The optimum feedstock composition, identified as 95wt.% of metal powder, 3.6wt.% of wax, and 1.4wt.% of stearic acid, exhibited excellent flowability, full structural stability post-sinteringSintering, and good mechanical and physical properties.

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Development of an Environmentally Friendly and Low-Cost Binder for 17-4PH Metal Part Printing via Fused Deposition Modeling

  • 会议论文

  • 发表日期：

    2025年

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  • Sheyda Khazaee,
  • Elie Bitar-Nehme,
  • Rachid Boukhili,
  • Jovan Kostenov,
  • William Regnaud,
  • Etienne Martin

摘要

This study identifies the optimal feedstock composition for producing high-quality components via fused deposition modelingFused deposition modeling (FDM) using 17-4PH stainless steelStainless steel powder, paraffin wax, and stearic acid. Rheological measurements showed shear thinning behavior in all compositions, with viscosityViscosity increasing up to 20 times as metal content rises. To achieve high-quality components in the printing phase, increasing the percentage of metal requires a rise in printing temperatureTemperature and flow rate, while decreasing printing speed. Mechanical and physical properties were evaluated through three-point bending tests and densityDensity measurements. Increasing metal content from 93 to 95.5wt.% improved green parts’ flexural strength from 3.34 to 4.45 MPa, flexural modulus from 146 to 531 MPa, and densityDensity from 5.04 to 5.72 g/cm3. Heat treatment results revealed that a metal percentage exceeding 95wt.% is required to maintain sample geometry. The optimum feedstock composition, identified as 95wt.% of metal powder, 3.6wt.% of wax, and 1.4wt.% of stearic acid, exhibited excellent flowability, full structural stability post-sinteringSintering, and good mechanical and physical properties.