Thermal conductivity against densityHigher and further left: spreads more heat for its weightThermal expansion against thermal conductivityLower and further right: warps less when heated
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Sources4 documents: EOS GmbH, TIMET, Cleveland-Cliffs
DMLS 17-4PH Stainless Steel
EOS StainlessSteel 17-4PH IndustryLine (powder 9011-0041), EOS M 290, 40 µm, default job 17-4PH_040_StainlessM291_100, as built, horizontal; ISO 6892 & ASTM E8M
EOS StainlessSteel 17-4PH IndustryLine Material Data Sheet, M 290EOS GmbHarchived copyDMLS 17-4PH Stainless Steel · Yield strength: mean, as built, horizontal (N=72)DMLS 17-4PH Stainless Steel · Ultimate tensile strength: mean, as built, horizontal (N=72)DMLS 17-4PH Stainless Steel · Elongation at break: mean at break, as built, horizontalDMLS 17-4PH Stainless Steel · Density: mean part density (ISO 3369)DMLS 17-4PH Stainless Steel · Thermal expansion: mean 25-100 °C, ASTM E228, AFTER atmospheric heat treatment (as-built value not published)
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TIMETAL 6-4 PropertiesTIMETarchived copyTitanium · Yield strength: typical, plate (>0.187 in), annealed, 0.2% offsetTitanium · Ultimate tensile strength: typical, plate, annealedTitanium · Elongation at break: typical, in 2 in., plate annealedTitanium · Density: nominalTitanium · Poisson's ratio: mean of TIMET measurementsTitanium · Melting point: melting rangeTitanium · Max service temperature: upper recommended use temperature
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17-4 PH Stainless Steel Product Data Bulletin (2021)Cleveland-CliffsDMLS 17-4PH Stainless Steel · Young's modulus (stiffness): base material: wrought 17-4 PH, Condition H 900 (Cleveland-Cliffs)DMLS 17-4PH Stainless Steel · Poisson's ratio: base material: wrought 17-4 PH, all conditions (Cleveland-Cliffs)DMLS 17-4PH Stainless Steel · Thermal conductivity: base material: wrought 17-4 PH, Condition H 900, at 149 °C (Cleveland-Cliffs)DMLS 17-4PH Stainless Steel · Specific heat: base material: wrought 17-4 PH, Condition A, 0-100 °C (Cleveland-Cliffs)
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TIMETAL 6-4 Data SheetTIMETarchived copyTitanium · Young's modulus (stiffness): typical range, 20 °CTitanium · Thermal conductivity: typical, 20 °C, mill annealedTitanium · Thermal expansion: typical, mean 0-100 °CTitanium · Specific heat: typical, 20 °C
Each number points to the document that states it, with the exact basis. Values without a number are computed from the sourced ones. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
DMLS 17-4PH Stainless Steel is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Mechanical
Is DMLS 17-4PH Stainless Steel stronger than Titanium?
Titanium is stronger: its yield strength is 885 MPa against 861 MPa for DMLS 17-4PH Stainless Steel (3%).
Which is lighter, DMLS 17-4PH Stainless Steel or Titanium?
Titanium is lighter: 4,430 kg/m³ against 7,790 kg/m³ for DMLS 17-4PH Stainless Steel.
Which is stiffer, DMLS 17-4PH Stainless Steel or Titanium?
DMLS 17-4PH Stainless Steel is stiffer: Young's modulus 197 GPa against 115 GPa for Titanium, so the same part in DMLS 17-4PH Stainless Steel deflects less under the same load.
Which is lighter for the same job, DMLS 17-4PH Stainless Steel or Titanium?
For the same stiffness or strength: Titanium is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
Part that must be
DMLS 17-4PH Stainless Steel
Titanium
Stiff rod or tie (tension)
2% heavier
lighter
Stiff beam (bending)
34% heavier
lighter
Stiff panel or plate
47% heavier
lighter
Strong rod or tie
1.81x heavier
lighter
Strong beam
1.79x heavier
lighter
Strong panel or plate
1.78x heavier
lighter
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 is more ductile, DMLS 17-4PH Stainless Steel or Titanium?
DMLS 17-4PH Stainless Steel stretches further before it breaks: 19.9% elongation at break against 16% for Titanium.
Thermal
Which conducts heat better, DMLS 17-4PH Stainless Steel or Titanium?
DMLS 17-4PH Stainless Steel conducts heat better: 17.9 W/m·K against 6.6 W/m·K for Titanium.
Which expands less with temperature?
Titanium expands less: 9 µm/m·K against 10.4 µm/m·K for DMLS 17-4PH Stainless Steel.