BASF Forward AM (BASF 3D Printing Solutions) Ultrafuse HiPS, TDS v2.2 (13.11.2019), printed specimens, XY 'Flat'. Specimen print settings are not stated; recommended processing on the sheet: nozzle 240-260 °C, bed 100-120 °C, 40-80 mm/s. Product is discontinued (Forward AM product page) but the TDS is still served by Forward AM.
1.4305 / UNS S30300, Outokumpu typical values (hot rolled, solution annealed) from 'Steel Grades, Properties and Global Standards'; max service from Carpenter CarTech 303 datasheet
Every value links to the document that states it. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
FDM HIPS is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is FDM HIPS stronger than Stainless Steel 303?
Stainless Steel 303 is stronger: its yield strength is 275 MPa against tensile strength 18.4 MPa for FDM HIPS (14.9x).
Which is lighter, FDM HIPS or Stainless Steel 303?
FDM HIPS is lighter: 1,023 kg/m³ against 7,900 kg/m³ for Stainless Steel 303.
Which is stiffer, FDM HIPS or Stainless Steel 303?
Stainless Steel 303 is stiffer: Young's modulus 200 GPa against 1.59 GPa for FDM HIPS, so the same part in Stainless Steel 303 deflects less under the same load.
Which is lighter for the same job, FDM HIPS or Stainless Steel 303?
For the same stiffness or strength: FDM HIPS is lighter for a stiff panel or plate, strong beam, strong panel or plate; Stainless Steel 303 is lighter for a stiff rod or tie (tension), stiff beam (bending), strong rod or tie.
Part that must be
FDM HIPS
Stainless Steel 303
Stiff rod or tie (tension)
16.3x heavier
lighter
Stiff beam (bending)
45% heavier
lighter
Stiff panel or plate
lighter
1.54x heavier
Strong rod or tie
1.94x heavier
lighter
Strong beam
lighter
27% heavier
Strong panel or plate
lighter
2x heavier
For the same stiffness or strength, mass scales with density over stiffness (or strength) raised to a power set by how the part is loaded: 1 for a rod in tension, 1/2 for a beam in bending, 1/3 for a panel (the standard material-selection indices).
Which conducts heat better, FDM HIPS or Stainless Steel 303?
Stainless Steel 303 conducts heat better: 15 W/m·K against 0.17 W/m·K for FDM HIPS.
Which expands less with temperature?
Stainless Steel 303 expands less: 16 µm/m·K against 80 µm/m·K for FDM HIPS.