Materials / Compare

DMLS 17-4PH Stainless Steel vs. Steel AISI 1018

Compare DMLS 17-4PH Stainless Steel vs. Steel AISI 1018 strength, stiffness, weight and thermal properties.

DMLS 17-4PH Stainless Steel3D printed metal (DMLS)
Steel AISI 1018Wrought
MechanicalDMLS 17-4PH Stainless SteelSteel AISI 1018
Yield strengthmean861MPa12.31x strongerproducer-stated372MPa2
Ultimate tensile strengthmean886MPa12.01x strongerproducer-stated441MPa2
Elongation at breakmean at break19.9%133% more ductilein 2 in15%2
Young's modulus (stiffness)base material197GPa3base material200GPa4
Densitymean part density7,790kg/m³1base material7,861kg/m³4
Strength to weight110kN·m/kg2.33x higher47.3kN·m/kg
Stiffness to weight25.3MN·m/kg25.4MN·m/kg
Poisson's ratiobase material0.2723base material0.324
Shear modulus77.4GPa2% stiffer in shear75.7GPa
Bulk modulus144GPa185GPa29% higher
Speed of sound5,029m/s5,043m/s
1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonWoodAluminumSteelIronTitaniumStainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin StandardSLA Resin Tough 2000SLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelConcretePCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30DMLS 17-4PH Stainless SteelSteel AISI 1018
Stiffness against densityHigher and further left: stiffer for its weight
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberWoodAluminumSteelIronTitaniumStainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin StandardSLA Resin Tough 2000SLA Resin Elastic 50ASLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelBrickPCB Laminate FR-4SiliconCeramic Alumina 96%Aluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30DMLS 17-4PH Stainless SteelSteel AISI 1018
Strength against densityHigher and further left: stronger for its weight
ThermalDMLS 17-4PH Stainless SteelSteel AISI 1018
Thermal conductivitybase material17.9W/m·K3base material51.9W/m·K4
Thermal expansionmean 25-100 °C10.4µm/m·K115% lessbase material12µm/m·K5
100 mm part over a 50 °C swing52µm growth15% less60µm growth
Specific heatbase material460J/kg·K3base material486J/kg·K4
Heats up and cools (diffusivity)5mm²/s13.6mm²/s2.72x faster
Thermal shock resistance5,474W/m5,473W/m
1k10k0.1110100Density (kg/m³)Thermal conductivity (W/m·K)Plastic PLAPlastic PETGPlastic ABSPlastic NylonRubberWoodAluminumSteelIronTitaniumStainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM HIPSSLA Resin StandardDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelConcreteBrickPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30DMLS 17-4PH Stainless SteelSteel AISI 1018
Thermal conductivity against densityHigher and further left: spreads more heat for its weight
0.111010010100Thermal conductivity (W/m·K)Thermal expansion (µm/m·K)Plastic PETGPlastic ABSPlastic NylonWoodAluminumSteelIronTitaniumStainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM HIPSSLA Resin StandardDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelConcreteBrickPlywoodPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30DMLS 17-4PH Stainless SteelSteel AISI 1018
Thermal expansion against thermal conductivityLower and further right: warps less when heated
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Sources5 documents: EOS GmbH, Niagara LaSalle, Cleveland-Cliffs, U.S. Department of Defense, 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 1018
AISI 1018 cold drawn bar (Niagara LaSalle, cold-finished bar producer)
  1. 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)
  2. 2
    1018 PropertiesNiagara LaSallearchived copySteel AISI 1018 · Yield strength: producer-stated, cold drawnSteel AISI 1018 · Ultimate tensile strength: producer-stated, cold drawnSteel AISI 1018 · Elongation at break: in 2 in (50.8 mm)
  3. 3
    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)
  4. 4
    MIL-HDBK-5J, Metallic Materials and Elements for Aerospace Vehicle Structures (2003)U.S. Department of DefenseSteel AISI 1018 · Young's modulus (stiffness): base material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018)Steel AISI 1018 · Density: base material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018)Steel AISI 1018 · Poisson's ratio: base material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018)Steel AISI 1018 · Thermal conductivity: base material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018)Steel AISI 1018 · Specific heat: base material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018)
  5. 5
    S275JR Steel GradeOvakoSteel AISI 1018 · Thermal expansion: base material: unalloyed carbon steel, Ovako family table (S275JR, 'none alloyed structural steels', C <= 0.21%); mean 20-300 °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 Steel AISI 1018?

DMLS 17-4PH Stainless Steel is stronger: its yield strength is 861 MPa against 372 MPa for Steel AISI 1018 (2.31x).

Which is lighter, DMLS 17-4PH Stainless Steel or Steel AISI 1018?

DMLS 17-4PH Stainless Steel is lighter: 7,790 kg/m³ against 7,861 kg/m³ for Steel AISI 1018.

Which is stiffer, DMLS 17-4PH Stainless Steel or Steel AISI 1018?

Steel AISI 1018 is stiffer: Young's modulus 200 GPa against 197 GPa for DMLS 17-4PH Stainless Steel, so the same part in Steel AISI 1018 deflects less under the same load.

Which is lighter for the same job, DMLS 17-4PH Stainless Steel or Steel AISI 1018?

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.

Part that must beDMLS 17-4PH Stainless SteelSteel AISI 1018
Stiff rod or tie (tension)about equalabout equal
Stiff beam (bending)about equalabout equal
Stiff panel or plateabout equalabout equal
Strong rod or tielighter2.33x heavier
Strong beamlighter1.77x heavier
Strong panel or platelighter1.53x 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 1018?

DMLS 17-4PH Stainless Steel stretches further before it breaks: 19.9% elongation at break against 15% for Steel AISI 1018.

Thermal

Which conducts heat better, DMLS 17-4PH Stainless Steel or Steel AISI 1018?

Steel AISI 1018 conducts heat better: 51.9 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 1018.

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