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Drywall vs. Magnesium AZ31B-H24

Compare Drywall vs. Magnesium AZ31B-H24 strength, stiffness, weight and thermal properties.

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DrywallNatural
Magnesium AZ31B-H24Wrought
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Mechanical
Yield strengthnot given (tensile used)220MPasourcetypical, H24, 0.5-6 mm, 0.2 % proof stress
Ultimate tensile strength1–2MPasourceambient range reported in review (Australian studies)290MPasourcetypical, H24, 0.5-6 mm
Compressive strength2.4MPasourcetypical, 70 F / 50% RHnot sourced
Elongation at breaknot sourced13%sourcetypical, H24, 0.5-6 mm, gauge 5.65√A
Young's modulus (stiffness)1–2GPasourceambient range reported in review (Australian studies)44.8GPasourcetypical (handbook physical constant)
Densitynot sourced1,769kg/m³sourcenominal
Strength to weightnot sourced124kN·m/kg
Stiffness to weightnot sourced25.3MN·m/kg
Poisson's rationot sourced0.35sourcetypical (handbook physical constant)
Shear modulusnot sourced16.6GPa
Bulk modulusnot sourced49.8GPa
Speed of soundnot sourced5,032m/s
Thermal
Thermal conductivitynot sourced76.9W/m·Ksourcetypical (temper/temperature not stated)
Thermal expansion16.7µm/m·Ksourcetypical, unrestrained, 3.3-32 C26.8µm/m·Ksourcetypical (temperature range not stated)
100 mm part over a 50 °C swing83.5µm growth1.6x less134µm growth
Specific heat1,090J/kg·Ksourcetypical (from ASHRAE Handbook of Fundamentals, per GA)1,040J/kg·Ksourcetypical
Heats up and cools (diffusivity)not sourced41.8mm²/s
Thermal shock resistancenot sourced9,159W/m
Max service temperature52°Csourcemanufacturer sustained-exposure limit149°Csourcestated application limit
Values for1/2 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. submittalAZ31B-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 Drywall stronger than Magnesium AZ31B-H24?

Magnesium AZ31B-H24 is stronger: its yield strength is 220 MPa against tensile strength 1.5 MPa for Drywall (147x).

Which is stiffer, Drywall or Magnesium AZ31B-H24?

Magnesium AZ31B-H24 is stiffer: Young's modulus 44.8 GPa against 1.5 GPa for Drywall, so the same part in Magnesium AZ31B-H24 deflects less under the same load.

Which expands less with temperature?

Drywall expands less: 16.7 µm/m·K against 26.8 µm/m·K for Magnesium AZ31B-H24.

Among 59 materials

1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonAluminumSteelIronTitaniumSteel AISI 1018Stainless 304Stainless 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless 303Stainless 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 SteelMagnesium AZ31B-H24
Stiffness against density
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberAluminumSteelIronTitaniumSteel AISI 1018Stainless 304Stainless 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless 303Stainless 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 SteelBrickMagnesium AZ31B-H24
Strength against density

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