Materials / Compare

Ceramic Alumina 96% vs. Magnesium AZ31B-H24

Compare Ceramic Alumina 96% vs. Magnesium AZ31B-H24 strength, stiffness, weight and thermal properties.

Change either side
Ceramic Alumina 96%Sintered ceramic (pressed and fired)
Magnesium AZ31B-H24Wrought
Try it on a partA sample part to run stress or thermal on, free in your browserOpen in LessCADOpen in LessCAD
Mechanical
Yield strengthnot given (tensile used)220MPasourcetypical, H24, 0.5-6 mm, 0.2 % proof stress
Ultimate tensile strength221MPasourcetypical tensile strength, 25 °C (ACMA Test #4)290MPasourcetypical, H24, 0.5-6 mm
Compressive strength2,068MPasourcetypical, 20 °C (ASTM-C773)not sourced
Flexural strength358MPasourceflexural strength (MOR), 20 °C (ASTM-F417)not sourced
Elongation at breaknot sourced13%sourcetypical, H24, 0.5-6 mm, gauge 5.65√A
Young's modulus (stiffness)303GPasourcetypical, 20 °C (ASTM-C848)44.8GPasourcetypical (handbook physical constant)
Density3,720kg/m³sourcetypical (ASTM-C20)1,769kg/m³sourcenominal
Strength to weight59.4kN·m/kg124kN·m/kg2.09x higher
Stiffness to weight81.5MN·m/kg3.22x higher25.3MN·m/kg
Poisson's ratio0.21sourcetypical, 20 °C (ASTM-C848)0.35sourcetypical (handbook physical constant)
Shear modulus125GPa7.55x stiffer in shear16.6GPa
Bulk modulus174GPa49.8GPa
Speed of sound9,025m/s5,032m/s
Thermal
Thermal conductivity24.7W/m·Ksourcetypical, 20 °C (ASTM-C408)76.9W/m·Ksourcetypical (temper/temperature not stated)
Thermal expansion8.2µm/m·Ksourcemean, 25-1000 °C (ASTM-C372)26.8µm/m·Ksourcetypical (temperature range not stated)
100 mm part over a 50 °C swing41µm growth3.27x less134µm growth
Specific heat880J/kg·Ksourcetypical, 100 °C (ASTM-E1269)1,040J/kg·Ksourcetypical
Heats up and cools (diffusivity)7.55mm²/s41.8mm²/s5.54x faster
Thermal shock resistance1,736W/m9,159W/m5.28x more resistant
Max service temperaturenot sourced149°Csourcestated application limit
Values forCoorsTek AD-96, nominal 96% Al2O3 sintered alumina, typical values; CoorsTek "Ceramic Seal Material Properties" (© 2018, 01899 F). AD-96 is the general 96% grade, not the ADS-96R substrate grade.AZ31B-H24 sheet 0.016-0.062 in., MIL-HDBK-5J Table 4.2.1.0(b) (AMS 4377); strengths are S-basis MINIMUMS

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.

Questions

Is Ceramic Alumina 96% stronger than Magnesium AZ31B-H24?

Ceramic Alumina 96% is stronger: its tensile strength is 221 MPa against yield strength 220 MPa for Magnesium AZ31B-H24 (0%).

Which is lighter, Ceramic Alumina 96% or Magnesium AZ31B-H24?

Magnesium AZ31B-H24 is lighter: 1,769 kg/m³ against 3,720 kg/m³ for Ceramic Alumina 96%.

Which is stiffer, Ceramic Alumina 96% or Magnesium AZ31B-H24?

Ceramic Alumina 96% is stiffer: Young's modulus 303 GPa against 44.8 GPa for Magnesium AZ31B-H24, so the same part in Ceramic Alumina 96% deflects less under the same load.

Which is lighter for the same job, Ceramic Alumina 96% or Magnesium AZ31B-H24?

For the same stiffness or strength: Ceramic Alumina 96% is lighter for a stiff rod or tie (tension), stiff beam (bending); Magnesium AZ31B-H24 is lighter for a stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.

Part that must beCeramic Alumina 96%Magnesium AZ31B-H24
Stiff rod or tie (tension)lighter3.22x heavier
Stiff beam (bending)lighter24% heavier
Stiff panel or plate11% heavierlighter
Strong rod or tie2.09x heavierlighter
Strong beam2.1x heavierlighter
Strong panel or plate2.1x heavierlighter

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, Ceramic Alumina 96% or Magnesium AZ31B-H24?

Magnesium AZ31B-H24 conducts heat better: 76.9 W/m·K against 24.7 W/m·K for Ceramic Alumina 96%.

Which expands less with temperature?

Ceramic Alumina 96% expands less: 8.2 µm/m·K against 26.8 µm/m·K for Magnesium AZ31B-H24.

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 718Zinc 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 Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Ceramic Alumina 96%Magnesium AZ31B-H24
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 718Zinc 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 2000SLA Resin Elastic 50ASLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelBrickPCB Laminate FR-4SiliconAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Ceramic Alumina 96%Magnesium AZ31B-H24
Strength against density

Related comparisons