Thermal conductivity against densityHigher and further left: spreads more heat for its weightThermal expansion against thermal conductivityLower and further right: warps less when heated
Try it on a partA bracket to run stress or thermal on, free in your browser
Sources4 documents: EOS GmbH, Niagara LaSalle, Cleveland-Cliffs, Ovako
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
Steel AISI 1045
AISI 1045 cold drawn bar (Niagara LaSalle) for mechanical; Ovako C45 (lists 'SAE 1045' as a similar designation) for physical constants
1
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)
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 Steel AISI 1045?
DMLS 17-4PH Stainless Steel is stronger: its yield strength is 861 MPa against 531 MPa for Steel AISI 1045 (1.62x).
Which is lighter, DMLS 17-4PH Stainless Steel or Steel AISI 1045?
DMLS 17-4PH Stainless Steel is lighter: 7,790 kg/m³ against 7,800 kg/m³ for Steel AISI 1045.
Which is stiffer, DMLS 17-4PH Stainless Steel or Steel AISI 1045?
Steel AISI 1045 is stiffer: Young's modulus 210 GPa against 197 GPa for DMLS 17-4PH Stainless Steel, so the same part in Steel AISI 1045 deflects less under the same load.
Which is lighter for the same job, DMLS 17-4PH Stainless Steel or Steel AISI 1045?
For the same stiffness or strength: DMLS 17-4PH Stainless Steel is lighter for a strong rod or tie, strong beam, strong panel or plate; Steel AISI 1045 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate.
Part that must be
DMLS 17-4PH Stainless Steel
Steel AISI 1045
Stiff rod or tie (tension)
6% heavier
lighter
Stiff beam (bending)
3% heavier
lighter
Stiff panel or plate
2% heavier
lighter
Strong rod or tie
lighter
1.62x heavier
Strong beam
lighter
38% heavier
Strong panel or plate
lighter
27% 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 is more ductile, DMLS 17-4PH Stainless Steel or Steel AISI 1045?
DMLS 17-4PH Stainless Steel stretches further before it breaks: 19.9% elongation at break against 12% for Steel AISI 1045.
Thermal
Which conducts heat better, DMLS 17-4PH Stainless Steel or Steel AISI 1045?
Steel AISI 1045 conducts heat better: 42.5 W/m·K against 17.9 W/m·K for DMLS 17-4PH Stainless Steel.
Which expands less with temperature?
DMLS 17-4PH Stainless Steel expands less: 10.4 µm/m·K against 12 µm/m·K for Steel AISI 1045.