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Concrete vs. Magnesium AZ31B-H24

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

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ConcreteCast
Magnesium AZ31B-H24Wrought
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Mechanical
Yield strengthnot sourced220MPasourcetypical, H24, 0.5-6 mm, 0.2 % proof stress
Ultimate tensile strengthnot sourced290MPasourcetypical, H24, 0.5-6 mm
Compressive strength27.6MPasourcespecified compressive strength class (f'c), not a measured typicalnot sourced
Elongation at breaknot sourced13%sourcetypical, H24, 0.5-6 mm, gauge 5.65√A
Young's modulus (stiffness)not sourced44.8GPasourcetypical (handbook physical constant)
Density2,240–2,400kg/m³sourcerange for normalweight concrete1,769kg/m³sourcenominal
Strength to weightnot sourced124kN·m/kg
Stiffness to weightnot sourced25.3MN·m/kg
Poisson's ratio0.15–0.2sourcegeneral range at normal ambient conditions (overall 0.11-0.32)0.35sourcetypical (handbook physical constant)
Shear modulusnot sourced16.6GPa
Bulk modulusnot sourced49.8GPa
Speed of soundnot sourced5,032m/s
Thermal
Thermal conductivity0.9W/m·Ksourcetypical (comparative value)76.9W/m·Ksourcetypical (temper/temperature not stated)
Thermal expansion8–12µm/m·Ksourcetypical range for portland cement concrete (aggregate dependent)26.8µm/m·Ksourcetypical (temperature range not stated)
100 mm part over a 50 °C swing50µm growth2.68x less134µm growth
Specific heat900J/kg·Ksourcetypical (NIST guidance for thermal analysis)1,040J/kg·Ksourcetypical
Heats up and cools (diffusivity)0.431mm²/s41.8mm²/s97x faster
Thermal shock resistancenot sourced9,159W/m
Max service temperature65°Csourcecode long-term temperature limit (ASME Code, concrete containments)149°Csourcestated application limit
Values forNormal-weight portland cement concrete, strength class f'c = 4000 psi (28 MPa) per NRMCA CIP 35; density NRMCA CIP 36; thermal conductivity USDA FPL Wood Handbook; service temperature ORNL/NRC reviewAZ31B-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

Which is lighter, Concrete or Magnesium AZ31B-H24?

Magnesium AZ31B-H24 is lighter: 1,769 kg/m³ against 2,320 kg/m³ for Concrete.

Which conducts heat better, Concrete or Magnesium AZ31B-H24?

Magnesium AZ31B-H24 conducts heat better: 76.9 W/m·K against 0.9 W/m·K for Concrete.

Which expands less with temperature?

Concrete expands less: 10 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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