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Plastic HDPE vs. Plastic PBT GF30 Compare Plastic HDPE vs. Plastic PBT GF30 strength, stiffness, weight and thermal properties.
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Plastic PLA Plastic PETG Plastic ABS Plastic TPU Plastic Nylon Plastic ABS (bulk/injection) Plastic Polycarbonate Plastic POM/Acetal Plastic Nylon PA6 Plastic Nylon PA66 Plastic PEEK Plastic PTFE Plastic UHMWPE Plastic HDPE Plastic Polypropylene Plastic PMMA Plastic PBT GF30 Plastic PPS GF40 Plastic LCP GF30 Rubber Wood Aluminum Aluminum 6061-T6 Aluminum 7075-T6 Aluminum 2024-T351 Aluminum 5052-H32 Aluminum 7050-T7451 Aluminum A380 Aluminum 6063-T6 Aluminum 1100-O Aluminum ADC12 Steel Steel AISI 1018 Steel AISI 1045 Steel AISI 4340 Steel A992 Iron Titanium Titanium Ti-6Al-4V Stainless Steel 304 Stainless Steel 316 Stainless Steel 303 Stainless Steel 17-4PH Brass C360 Brass C260 Copper C110 Glass Nickel Inconel 718 Magnesium AZ31B-H24 Magnesium AZ91D Zinc Zamak 3 FDM ASA FDM Polycarbonate FDM PAHT-CF FDM HIPS SLA Resin Standard SLA Resin Tough 2000 SLA Resin Elastic 50A SLS PA12 Nylon DMLS AlSi10Mg Aluminum DMLS Ti-6Al-4V ELI Titanium DMLS 316L Stainless Steel DMLS 17-4PH Stainless Steel Concrete Brick Plywood Drywall PCB Laminate FR-4 Silicon Ceramic Alumina 96% Ceramic Aluminum Nitride Solder SAC305 Plastic HDPE Bulk polymer (molded or machined) Plastic PLA Plastic PETG Plastic ABS Plastic TPU Plastic Nylon Plastic ABS (bulk/injection) Plastic Polycarbonate Plastic POM/Acetal Plastic Nylon PA6 Plastic Nylon PA66 Plastic PEEK Plastic PTFE Plastic UHMWPE Plastic HDPE Plastic Polypropylene Plastic PMMA Plastic PBT GF30 Plastic PPS GF40 Plastic LCP GF30 Rubber Wood Aluminum Aluminum 6061-T6 Aluminum 7075-T6 Aluminum 2024-T351 Aluminum 5052-H32 Aluminum 7050-T7451 Aluminum A380 Aluminum 6063-T6 Aluminum 1100-O Aluminum ADC12 Steel Steel AISI 1018 Steel AISI 1045 Steel AISI 4340 Steel A992 Iron Titanium Titanium Ti-6Al-4V Stainless Steel 304 Stainless Steel 316 Stainless Steel 303 Stainless Steel 17-4PH Brass C360 Brass C260 Copper C110 Glass Nickel Inconel 718 Magnesium AZ31B-H24 Magnesium AZ91D Zinc Zamak 3 FDM ASA FDM Polycarbonate FDM PAHT-CF FDM HIPS SLA Resin Standard SLA Resin Tough 2000 SLA Resin Elastic 50A SLS PA12 Nylon DMLS AlSi10Mg Aluminum DMLS Ti-6Al-4V ELI Titanium DMLS 316L Stainless Steel DMLS 17-4PH Stainless Steel Concrete Brick Plywood Drywall PCB Laminate FR-4 Silicon Ceramic Alumina 96% Ceramic Aluminum Nitride Solder SAC305 Plastic PBT GF30 Bulk polymer (molded or machined) Try it on a partA bracket to run stress or thermal on, free in your browser Open in LessCAD Open in LessCAD Mechanical Yield strength 24 MPa source typical, tensile stress at yield 23 °C, 50 mm/min ISO 527 not given (tensile used) Ultimate tensile strength not sourced 140 MPa source stress at break, 23 °C Flexural strength not sourced 210 MPa source typical, 23 °C Elongation at break not sourced 3 % source strain at break, 23 °C Young's modulus (stiffness) 0.9 GPa source typical, tensile modulus 23 °C ISO 527 9.8 GPa source typical, 23 °C Density 950 kg/m³ source typical, ISO 1183 1,530 kg/m³ source typical Strength to weight 25.3 kN·m/kg 91.5 kN·m/kg 3.62x higher Stiffness to weight 0.947 MN·m/kg 6.41 MN·m/kg 6.76x higher Poisson's ratio 0.4–0.45 source base material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE) not sourced Shear modulus 0.316 GPa not sourced Bulk modulus 2 GPa not sourced Speed of sound 973 m/s 2,531 m/s Thermal Thermal conductivity 0.4–0.49 W/m·K source base material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE) 0.27 W/m·K source typical (DIN 52612-1) Thermal expansion 120 µm/m·K source base material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE) 25 µm/m·K source longitudinal (flow), mean 23-55 °C 100 mm part over a 50 °C swing 600 µm growth 125 µm growth 4.8x less Specific heat 2,250 J/kg·K source base material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE) 1,050 J/kg·K source typical, 23 °C Heats up and cools (diffusivity) 0.208 mm²/s 24% faster 0.168 mm²/s Thermal shock resistance 56.9 W/m not sourced Melting point not sourced 223 °C source DSC (ISO 11357) Max service temperature not sourced 205 °C source HDT 1.8 MPa Values for LyondellBasell Hostalen 23050 B high density polyethylene, typical ISO values BASF Ultradur B 4300 G6 (PBT, 30% glass fibre), injection moulding grade; product information sheet 09/2026, typical values for uncoloured product at 23 °C.
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 HDPE stronger than Plastic PBT GF30? Plastic PBT GF30 is stronger: its tensile strength is 140 MPa against yield strength 24 MPa for Plastic HDPE (5.83x).
Which is lighter, Plastic HDPE or Plastic PBT GF30? Plastic HDPE is lighter: 950 kg/m³ against 1,530 kg/m³ for Plastic PBT GF30.
Which is stiffer, Plastic HDPE or Plastic PBT GF30? Plastic PBT GF30 is stiffer: Young's modulus 9.8 GPa against 0.9 GPa for Plastic HDPE, so the same part in Plastic PBT GF30 deflects less under the same load.
Which is lighter for the same job, Plastic HDPE or Plastic PBT GF30? For the same stiffness or strength: Plastic PBT GF30 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
Part that must be Plastic HDPE Plastic PBT GF30 Stiff rod or tie (tension) 6.76x heavier lighter Stiff beam (bending) 2.05x heavier lighter Stiff panel or plate 38% heavier lighter Strong rod or tie 3.62x heavier lighter Strong beam 2.01x heavier lighter Strong panel or plate 50% heavier lighter
For the same stiffness or strength, mass scales with density over stiffness (or strength) raised to a power set by how the part is loaded: 1 for a rod in tension, 1/2 for a beam in bending, 1/3 for a panel (the standard material-selection indices).
Which conducts heat better, Plastic HDPE or Plastic PBT GF30? Plastic HDPE conducts heat better: 0.445 W/m·K against 0.27 W/m·K for Plastic PBT GF30.
Which expands less with temperature? Plastic PBT GF30 expands less: 25 µm/m·K against 120 µm/m·K for Plastic HDPE.
Among 72 materials 1k 10k 0.1 1 10 100 Density (kg/m³) Young's modulus (GPa) Plastic PLA Plastic PETG Plastic ABS Plastic TPU Plastic Nylon Aluminum Steel Iron Titanium Steel AISI 1018 Stainless Steel 304 Stainless Steel 316 Aluminum 6061-T6 Aluminum 7075-T6 Brass C360 Copper C110 Glass Steel AISI 1045 Steel AISI 4340 Steel A992 Stainless Steel 303 Stainless Steel 17-4PH Aluminum 2024-T351 Aluminum 5052-H32 Aluminum 7050-T7451 Titanium Ti-6Al-4V Brass C260 Nickel Inconel 718 Magnesium AZ31B-H24 Zinc Zamak 3 Plastic ABS (bulk/injection) Plastic Polycarbonate Plastic POM/Acetal Plastic Nylon PA6 Plastic Nylon PA66 Plastic PEEK Plastic UHMWPE Plastic Polypropylene Plastic PMMA FDM ASA FDM Polycarbonate FDM PAHT-CF FDM HIPS SLA Resin Tough 2000 SLS PA12 Nylon DMLS AlSi10Mg Aluminum DMLS Ti-6Al-4V ELI Titanium DMLS 316L Stainless Steel DMLS 17-4PH Stainless Steel PCB Laminate FR-4 Silicon Ceramic Alumina 96% Ceramic Aluminum Nitride Aluminum A380 Aluminum 6063-T6 Aluminum 1100-O Aluminum ADC12 Magnesium AZ91D Solder SAC305 Plastic PPS GF40 Plastic LCP GF30 Plastic HDPE Plastic PBT GF30 Stiffness against density 1k 10k 10 100 1k Density (kg/m³) Yield strength (MPa) Plastic PLA Plastic PETG Plastic ABS Plastic TPU Plastic Nylon Rubber Aluminum Steel Iron Titanium Steel AISI 1018 Stainless Steel 304 Stainless Steel 316 Aluminum 6061-T6 Aluminum 7075-T6 Brass C360 Copper C110 Glass Steel AISI 1045 Steel AISI 4340 Steel A992 Stainless Steel 303 Stainless Steel 17-4PH Aluminum 2024-T351 Aluminum 5052-H32 Aluminum 7050-T7451 Titanium Ti-6Al-4V Brass C260 Nickel Inconel 718 Magnesium AZ31B-H24 Zinc Zamak 3 Plastic ABS (bulk/injection) Plastic Polycarbonate Plastic POM/Acetal Plastic Nylon PA6 Plastic Nylon PA66 Plastic PEEK Plastic PTFE Plastic UHMWPE Plastic Polypropylene Plastic PMMA FDM ASA FDM Polycarbonate FDM PAHT-CF FDM HIPS SLA Resin Tough 2000 SLA Resin Elastic 50A SLS PA12 Nylon DMLS AlSi10Mg Aluminum DMLS Ti-6Al-4V ELI Titanium DMLS 316L Stainless Steel DMLS 17-4PH Stainless Steel Brick PCB Laminate FR-4 Silicon Ceramic Alumina 96% Aluminum A380 Aluminum 6063-T6 Aluminum 1100-O Aluminum ADC12 Magnesium AZ91D Solder SAC305 Plastic PPS GF40 Plastic LCP GF30 Plastic HDPE Plastic PBT GF30 Strength against density