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Aluminum 5052-H32 vs. Ceramic Alumina 96%

Compare Aluminum 5052-H32 vs. Ceramic Alumina 96% strength, stiffness, weight and thermal properties.

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Aluminum 5052-H32Wrought
Ceramic Alumina 96%Sintered ceramic (pressed and fired)
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Mechanical
Yield strength195MPasourcetypical, 0.2% offsetnot given (tensile used)
Ultimate tensile strength230MPasourcetypical221MPasourcetypical tensile strength, 25 °C (ACMA Test #4)
Compressive strengthnot sourced2,068MPasourcetypical, 20 °C (ASTM-C773)
Flexural strengthnot sourced358MPasourceflexural strength (MOR), 20 °C (ASTM-F417)
Elongation at break12%sourcetypicalnot sourced
Young's modulus (stiffness)70GPasourcetypical303GPasourcetypical, 20 °C (ASTM-C848)
Density2,685kg/m³sourcenominal3,720kg/m³sourcetypical (ASTM-C20)
Strength to weight72.6kN·m/kg22% higher59.4kN·m/kg
Stiffness to weight26.1MN·m/kg81.5MN·m/kg3.12x higher
Poisson's ratio0.33sourcetypical (handbook physical constant)0.21sourcetypical, 20 °C (ASTM-C848)
Shear modulus26.3GPa125GPa4.76x stiffer in shear
Bulk modulus68.6GPa174GPa
Speed of sound5,106m/s9,025m/s
Thermal
Thermal conductivity138W/m·Ksourcebase material: 5052 in O temper (same alloy, annealed); Kaiser typical24.7W/m·Ksourcetypical, 20 °C (ASTM-C408)
Thermal expansion23.8µm/m·Ksourcetypical, mean 20-100 °C8.2µm/m·Ksourcemean, 25-1000 °C (ASTM-C372)
100 mm part over a 50 °C swing119µm growth41µm growth2.9x less
Specific heat963J/kg·Ksourceat 100 °C (212 °F); table covers O, H32, H34, H36, H38880J/kg·Ksourcetypical, 100 °C (ASTM-E1269)
Heats up and cools (diffusivity)53.4mm²/s7.07x faster7.55mm²/s
Thermal shock resistance10,822W/m6.24x more resistant1,736W/m
Melting point605–650°Csourcemelting rangenot sourced
Values for5052-H32, Kaiser Aluminum tube & pipe typical datasheet (mechanical, CTE, melting); MIL-HDBK-5J (Poisson, density, specific heat)CoorsTek 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.

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 Aluminum 5052-H32 stronger than Ceramic Alumina 96%?

Ceramic Alumina 96% is stronger: its tensile strength is 221 MPa against yield strength 195 MPa for Aluminum 5052-H32 (13%).

Which is lighter, Aluminum 5052-H32 or Ceramic Alumina 96%?

Aluminum 5052-H32 is lighter: 2,685 kg/m³ against 3,720 kg/m³ for Ceramic Alumina 96%.

Which is stiffer, Aluminum 5052-H32 or Ceramic Alumina 96%?

Ceramic Alumina 96% is stiffer: Young's modulus 303 GPa against 70 GPa for Aluminum 5052-H32, so the same part in Ceramic Alumina 96% deflects less under the same load.

Which is lighter for the same job, Aluminum 5052-H32 or Ceramic Alumina 96%?

For the same stiffness or strength: Aluminum 5052-H32 is lighter for a strong rod or tie, strong beam, strong panel or plate; Ceramic Alumina 96% is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate.

Part that must beAluminum 5052-H32Ceramic Alumina 96%
Stiff rod or tie (tension)3.12x heavierlighter
Stiff beam (bending)1.5x heavierlighter
Stiff panel or plate18% heavierlighter
Strong rod or tielighter22% heavier
Strong beamlighter27% heavier
Strong panel or platelighter30% 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 conducts heat better, Aluminum 5052-H32 or Ceramic Alumina 96%?

Aluminum 5052-H32 conducts heat better: 138 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 23.8 µm/m·K for Aluminum 5052-H32.

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 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 Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Aluminum 5052-H32Ceramic Alumina 96%
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 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 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 GF30Aluminum 5052-H32Ceramic Alumina 96%
Strength against density

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