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Aluminum ADC12 vs. Drywall

Compare Aluminum ADC12 vs. Drywall strength, stiffness, weight and thermal properties.

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Aluminum ADC12Cast
DrywallNatural
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Mechanical
Yield strength149MPasourceone test result, 0.2% proof stress, as cast, ASTM tensile bar (Daiki)not given (tensile used)
Ultimate tensile strength345MPasourceone test result, as cast, ASTM tensile bar (Daiki)1–2MPasourceambient range reported in review (Australian studies)
Compressive strengthnot sourced2.4MPasourcetypical, 70 F / 50% RH
Elongation at break2.3%sourceone test result, as cast, ASTM tensile bar (Daiki)not sourced
Young's modulus (stiffness)79.8GPasourcestandard value (S.S.Aluminum)1–2GPasourceambient range reported in review (Australian studies)
Density2,680kg/m³sourcemeasured (Daiki)not sourced
Strength to weight55.6kN·m/kgnot sourced
Stiffness to weight29.8MN·m/kgnot sourced
Poisson's rationot sourcednot sourced
Shear modulusnot sourcednot sourced
Bulk modulusnot sourcednot sourced
Speed of sound5,457m/snot sourced
Thermal
Thermal conductivity125W/m·Ksourcemeasured on specimens cut from a 50 x 100 x 5 mm flat die casting (Daiki)not sourced
Thermal expansion21µm/m·Ksourcemeasured, temperature range not stated (Daiki)16.7µm/m·Ksourcetypical, unrestrained, 3.3-32 C
100 mm part over a 50 °C swing105µm growth83.5µm growth26% less
Specific heat911J/kg·Ksourcemeasured (Daiki)1,090J/kg·Ksourcetypical (from ASHRAE Handbook of Fundamentals, per GA)
Heats up and cools (diffusivity)51.2mm²/snot sourced
Thermal shock resistancenot sourcednot sourced
Melting point515–582°Csourcesolidus-liquidus (Daiki)not sourced
Max service temperaturenot sourced52°Csourcemanufacturer sustained-exposure limit
Values forJIS ADC12 (Al-Si-Cu, about A383 / EN AC-46100) high-pressure die-casting alloy, as cast; physical properties from Daiki Aluminium Industry (ADC12 ingot producer) measured values; modulus from S.S.Aluminum (ADC12 ingot producer) standard values.1/2 in. (12.7 mm) regular gypsum board (ASTM C1396), Gypsum Association GA-235-2019 typical/minimum properties; tensile and E from USDA FPL-co-authored review; service limit from USG Sheetrock 1/2 in. submittal

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 ADC12 stronger than Drywall?

Aluminum ADC12 is stronger: its yield strength is 149 MPa against tensile strength 1.5 MPa for Drywall (99.3x).

Which is stiffer, Aluminum ADC12 or Drywall?

Aluminum ADC12 is stiffer: Young's modulus 79.8 GPa against 1.5 GPa for Drywall, so the same part in Aluminum ADC12 deflects less under the same load.

Which expands less with temperature?

Drywall expands less: 16.7 µm/m·K against 21 µm/m·K for Aluminum ADC12.

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-OMagnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Aluminum ADC12
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 2000SLA Resin Elastic 50ASLS 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-OMagnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Aluminum ADC12
Strength against density

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