Materials / Compare

Magnesium AZ91D vs. SLA Resin Elastic 50A

Compare Magnesium AZ91D vs. SLA Resin Elastic 50A strength, stiffness, weight and thermal properties.

Change either side
Magnesium AZ91DCast
SLA Resin Elastic 50A3D printed (SLA resin)
Try it on a partA bracket to run stress or thermal on, free in your browserOpen in LessCADOpen in LessCAD
Mechanical
Yield strength150MPasourcetypical, 0.2% tensile yield, ambient temperaturenot given (tensile used)
Ultimate tensile strength230MPasourcetypical, ambient temperature3.4MPasourcetypical
Elongation at break3%sourcetypical, ambient temperature160%sourcetypical
Young's modulus (stiffness)45GPasourcetypicalnot sourced
Density1,810kg/m³sourcetypical1,010kg/m³sourcetypical1.79x lighter
Strength to weight82.9kN·m/kg24.6x higher3.37kN·m/kg
Stiffness to weight24.9MN·m/kgnot sourced
Poisson's ratio0.35sourcebase material: AZ91C casting (MIL-HDBK-5J handbook physical constant)not sourced
Shear modulus16.7GPanot sourced
Bulk modulus50GPanot sourced
Speed of sound4,986m/snot sourced
Thermal
Thermal conductivity72W/m·Ksourcetypicalnot sourced
Thermal expansion25µm/m·Ksourcetypical, temperature range not statednot sourced
100 mm part over a 50 °C swing125µm growthnot sourced
Specific heat1,050J/kg·Ksourcetypicalnot sourced
Heats up and cools (diffusivity)37.9mm²/snot sourced
Thermal shock resistance6,240W/mnot sourced
Melting point470–595°Csourcemelting rangenot sourced
Glass transitionnot sourced-34.5°CsourceDMA
Values forELEKTRON AZ91D magnesium die-casting alloy, as cast; Magnesium Elektron datasheet 475 (7/01), typical properties; Poisson from MIL-HDBK-5J for AZ91C castings.Formlabs Elastic 50A Resin V2 (FLELCL02), TDS Rev. 01 24.01.2024; parts printed on Form 3, 100 µm, Elastic 50A V2 settings and post-processing; tensile on Die C specimens cut from printed sheets after 3+ h at 23 °C.

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.

SLA Resin Elastic 50A is 3D printed: its properties depend on build direction and print settings; these are typical values.

Questions

Is Magnesium AZ91D stronger than SLA Resin Elastic 50A?

Magnesium AZ91D is stronger: its yield strength is 150 MPa against tensile strength 3.4 MPa for SLA Resin Elastic 50A (44.1x).

Which is lighter, Magnesium AZ91D or SLA Resin Elastic 50A?

SLA Resin Elastic 50A is lighter: 1,010 kg/m³ against 1,810 kg/m³ for Magnesium AZ91D.

Which is lighter for the same job, Magnesium AZ91D or SLA Resin Elastic 50A?

For the same stiffness or strength: Magnesium AZ91D is lighter for a strong rod or tie, strong beam, strong panel or plate.

Part that must beMagnesium AZ91DSLA Resin Elastic 50A
Strong rod or tielighter24.6x heavier
Strong beamlighter6.97x heavier
Strong panel or platelighter3.71x 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).

Among 72 materials

1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel 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 Tough 2000SLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Solder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Magnesium AZ91D
Stiffness against density
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel 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 Tough 2000SLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelBrickPCB Laminate FR-4SiliconCeramic Alumina 96%Aluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Solder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Magnesium AZ91DSLA Resin Elastic 50A
Strength against density

Related comparisons