Materials / Compare

Concrete vs. Plastic Nylon PA66

Compare Concrete vs. Plastic Nylon PA66 strength, stiffness, weight and thermal properties.

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ConcreteCast
Plastic Nylon PA66Bulk polymer (molded or machined)
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Mechanical
Yield strengthnot sourced85MPasourcetypical, dry
Ultimate tensile strengthnot sourcednot sourced
Compressive strength27.6MPasourcespecified compressive strength class (f'c), not a measured typicalnot sourced
Elongation at breaknot sourced30%sourcenominal strain at break, dry
Young's modulus (stiffness)not sourced3GPasourcetypical, dry
Density2,240–2,400kg/m³sourcerange for normalweight concrete1,130kg/m³sourcetypical
Strength to weightnot sourced75.2kN·m/kg
Stiffness to weightnot sourced2.65MN·m/kg
Poisson's ratio0.15–0.2sourcegeneral range at normal ambient conditions (overall 0.11-0.32)0.4sourcebase material: unfilled polyamide (PA), conditioned, maker design-guide family value (Covestro Table 3-1)
Shear modulusnot sourced1.07GPa
Bulk modulusnot sourced5GPa
Speed of soundnot sourced1,629m/s
Thermal
Thermal conductivity0.9W/m·Ksourcetypical (comparative value)0.33W/m·Ksourcetypical
Thermal expansion8–12µm/m·Ksourcetypical range for portland cement concrete (aggregate dependent)98µm/m·Ksourcelongitudinal, 23-55 °C
100 mm part over a 50 °C swing50µm growth9.8x less490µm growth
Specific heat900J/kg·Ksourcetypical (NIST guidance for thermal analysis)1,700J/kg·Ksourcetypical
Heats up and cools (diffusivity)0.431mm²/s2.51x faster0.172mm²/s
Thermal shock resistancenot sourced57.2W/m
Melting pointnot sourced260°CsourceDSC
Max service temperature65°Csourcecode long-term temperature limit (ASME Code, concrete containments)101°CsourceIEC 60216 temperature index, 20000 h
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 reviewBASF Ultramid A3K (PA66, unreinforced injection-moulding grade), Product Information 02/2026, dry values (ISO methods)

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 Plastic Nylon PA66?

Plastic Nylon PA66 is lighter: 1,130 kg/m³ against 2,320 kg/m³ for Concrete.

Which conducts heat better, Concrete or Plastic Nylon PA66?

Concrete conducts heat better: 0.9 W/m·K against 0.33 W/m·K for Plastic Nylon PA66.

Which expands less with temperature?

Concrete expands less: 10 µm/m·K against 98 µm/m·K for Plastic Nylon PA66.

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 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 SteelPlastic Nylon PA66
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 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 SteelBrickPlastic Nylon PA66
Strength against density

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