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Plastic PBT GF30 vs. Plywood

Compare Plastic PBT GF30 vs. Plywood strength, stiffness, weight and thermal properties.

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Plastic PBT GF30Bulk polymer (molded or machined)
PlywoodNatural
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Mechanical
Yield strengthnot given (tensile used)not given (tensile used)
Ultimate tensile strength140MPasourcestress at break, 23 °C41.4MPasourcemodulus of rupture (no direct tensile value)
Flexural strength210MPasourcetypical, 23 °C41.4MPasourcestatic bending MOR (Douglas-fir); range 33.72-42.61 across species
Elongation at break3%sourcestrain at break, 23 °Cnot sourced
Young's modulus (stiffness)9.8GPasourcetypical, 23 °C7.45GPasourcestatic bending MOE of the panel (Douglas-fir); range 6.96-8.55 across species
Density1,530kg/m³sourcetypicalnot sourced
Strength to weight91.5kN·m/kgnot sourced
Stiffness to weight6.41MN·m/kgnot sourced
Poisson's rationot sourcednot sourced
Shear modulusnot sourcednot sourced
Bulk modulusnot sourcednot sourced
Speed of sound2,531m/snot sourced
Thermal
Thermal conductivity0.27W/m·Ksourcetypical (DIN 52612-1)0.12W/m·KsourceAPA-recommended design value (Douglas-fir plywood), as reported by FPL/ORNL
Thermal expansion25µm/m·Ksourcelongitudinal (flow), mean 23-55 °C3.1–4.5µm/m·Ksourcebase material: solid wood parallel to grain, ovendry, range across species
100 mm part over a 50 °C swing125µm growth19µm growth6.58x less
Specific heat1,050J/kg·Ksourcetypical, 23 °C1,700J/kg·Ksourcebase material: solid wood (all species), 12% MC, 27 C
Heats up and cools (diffusivity)0.168mm²/snot sourced
Thermal shock resistancenot sourcednot sourced
Melting point223°CsourceDSC (ISO 11357)not sourced
Max service temperature205°CsourceHDT 1.8 MPanot sourced
Values forBASF Ultradur B 4300 G6 (PBT, 30% glass fibre), injection moulding grade; product information sheet 09/2026, typical values for uncoloured product at 23 °C.Douglas-fir plywood sheathing (construction plywood per PS 1), static bending properties from USDA FPL Wood Handbook FPL-GTR-282 Ch. 12 Table 12-2 (Biblis 2000)

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 Plastic PBT GF30 stronger than Plywood?

Plastic PBT GF30 is stronger: its tensile strength is 140 MPa against 41.4 MPa for Plywood (3.38x).

Which is stiffer, Plastic PBT GF30 or Plywood?

Plastic PBT GF30 is stiffer: Young's modulus 9.8 GPa against 7.45 GPa for Plywood, so the same part in Plastic PBT GF30 deflects less under the same load.

Which conducts heat better, Plastic PBT GF30 or Plywood?

Plastic PBT GF30 conducts heat better: 0.27 W/m·K against 0.12 W/m·K for Plywood.

Which expands less with temperature?

Plywood expands less: 3.8 µm/m·K against 25 µm/m·K for Plastic PBT GF30.

Among 72 materials

1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 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 SteelPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PPS GF40Plastic LCP GF30Plastic PBT GF30
Stiffness against density
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 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 SteelBrickPCB Laminate FR-4SiliconCeramic Alumina 96%Aluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PPS GF40Plastic LCP GF30Plastic PBT GF30
Strength against density

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