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Drywall vs. Steel A992

Compare Drywall vs. Steel A992 strength, stiffness, weight and thermal properties.

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DrywallNatural
Steel A992Wrought
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Mechanical
Yield strengthnot given (tensile used)385MPasourcetypical: mean of 20,295 A992 flange mill-test coupons (1998 SSPC survey), as reported by AISC
Ultimate tensile strength1–2MPasourceambient range reported in review (Australian studies)505MPasourcetypical: mean of 20,295 A992 flange mill-test coupons (1998 SSPC survey)
Compressive strength2.4MPasourcetypical, 70 F / 50% RHnot sourced
Elongation at breaknot sourcednot sourced
Young's modulus (stiffness)1–2GPasourceambient range reported in review (Australian studies)200GPasourcedesign value (AISC 360-16)
Densitynot sourced7,850kg/m³sourcenominal (constructional data)
Strength to weightnot sourced49kN·m/kg
Stiffness to weightnot sourced25.5MN·m/kg
Poisson's rationot sourced0.3sourcedesign value (AISC 360-16 Commentary)
Shear modulusnot sourced76.9GPa
Bulk modulusnot sourced167GPa
Speed of soundnot sourced5,048m/s
Thermal
Thermal conductivitynot sourced48W/m·Ksourcenominal at 20 °C
Thermal expansion16.7µm/m·Ksourcetypical, unrestrained, 3.3-32 C12µm/m·Ksourcenominal (constructional data, no temperature range stated)
100 mm part over a 50 °C swing83.5µm growth60µm growth39% less
Specific heat1,090J/kg·Ksourcetypical (from ASHRAE Handbook of Fundamentals, per GA)460–480J/kg·Ksourcebase material: EN S275JR unalloyed structural steel (the EN counterpart of A36), typical, 50/100 °C
Heats up and cools (diffusivity)not sourced13mm²/s
Thermal shock resistancenot sourced5,390W/m
Max service temperature52°Csourcemanufacturer sustained-exposure limitnot sourced
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. submittalASTM A992 W-shapes; Fy/Fu specified minimums from AISC publications (AISC 360-16 Commentary; Modern Steel Construction); elastic constants AISC 360; physical constants from the bauforumstahl structural-steel EPD, which names A992 among covered product standards.

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 Steel A992?

Steel A992 is stronger: its yield strength is 385 MPa against tensile strength 1.5 MPa for Drywall (257x).

Which is stiffer, Drywall or Steel A992?

Steel A992 is stiffer: Young's modulus 200 GPa against 1.5 GPa for Drywall, so the same part in Steel A992 deflects less under the same load.

Which expands less with temperature?

Steel A992 expands less: 12 µm/m·K against 16.7 µm/m·K for Drywall.

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 4340Stainless 303Stainless 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 SteelSteel A992
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 4340Stainless 303Stainless 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 SteelBrickSteel A992
Strength against density

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