Materials / Compare

Drywall vs. Plastic HDPE

Compare Drywall vs. Plastic HDPE strength, stiffness, weight and thermal properties.

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DrywallNatural
Plastic HDPEBulk polymer (molded or machined)
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Mechanical
Yield strengthnot given (tensile used)24MPasourcetypical, tensile stress at yield 23 °C, 50 mm/min ISO 527
Ultimate tensile strength1–2MPasourceambient range reported in review (Australian studies)not sourced
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)0.9GPasourcetypical, tensile modulus 23 °C ISO 527
Densitynot sourced950kg/m³sourcetypical, ISO 1183
Strength to weightnot sourced25.3kN·m/kg
Stiffness to weightnot sourced0.947MN·m/kg
Poisson's rationot sourced0.4–0.45sourcebase material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE)
Shear modulusnot sourced0.316GPa
Bulk modulusnot sourced2GPa
Speed of soundnot sourced973m/s
Thermal
Thermal conductivitynot sourced0.4–0.49W/m·Ksourcebase material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE)
Thermal expansion16.7µm/m·Ksourcetypical, unrestrained, 3.3-32 C120µm/m·Ksourcebase material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE)
100 mm part over a 50 °C swing83.5µm growth7.19x less600µm growth
Specific heat1,090J/kg·Ksourcetypical (from ASHRAE Handbook of Fundamentals, per GA)2,250J/kg·Ksourcebase material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE)
Heats up and cools (diffusivity)not sourced0.208mm²/s
Thermal shock resistancenot sourced56.9W/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. submittalLyondellBasell Hostalen 23050 B high density polyethylene, typical ISO values

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 Plastic HDPE?

Plastic HDPE is stronger: its yield strength is 24 MPa against tensile strength 1.5 MPa for Drywall (16x).

Which is stiffer, Drywall or Plastic HDPE?

Drywall is stiffer: Young's modulus 1.5 GPa against 0.9 GPa for Plastic HDPE, so the same part in Drywall deflects less under the same load.

Which expands less with temperature?

Drywall expands less: 16.7 µm/m·K against 120 µm/m·K for Plastic HDPE.

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 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic UHMWPEPlastic 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 SteelPlastic HDPE
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 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic 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 SteelBrickPlastic HDPE
Strength against density

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