Materials / Compare

Brick vs. Plastic PBT GF30

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

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BrickNatural
Plastic PBT GF30Bulk polymer (molded or machined)
Try it on a partA sample part to run stress or thermal on, free in your browserOpen in LessCADOpen in LessCAD
Mechanical
Yield strengthnot given (tensile used)not given (tensile used)
Ultimate tensile strength5.1MPasourcemodulus of rupture (no direct tensile value)140MPasourcestress at break, 23 °C
Compressive strength77.9MPasourcemean unit compressive strength, solid extruded brick (survey mean; SD 30.8 MPa)not sourced
Flexural strengthnot sourced210MPasourcetypical, 23 °C
Elongation at breaknot sourced3%sourcestrain at break, 23 °C
Young's modulus (stiffness)not sourced9.8GPasourcetypical, 23 °C
Density2,082kg/m³sourceface brick density row used for k (BIA notes most fired clay brick 120-130 lb/ft3)1,530kg/m³sourcetypical
Strength to weight2.45kN·m/kg91.5kN·m/kg37.4x higher
Stiffness to weightnot sourced6.41MN·m/kg
Poisson's rationot sourcednot sourced
Shear modulusnot sourcednot sourced
Bulk modulusnot sourcednot sourced
Speed of soundnot sourced2,531m/s
Thermal
Thermal conductivity0.92–1.12W/m·Ksourcerange for 130 lb/ft3 face brick (ASHRAE 2013 via BIA)0.27W/m·Ksourcetypical (DIN 52612-1)
Thermal expansion7.2µm/m·KsourceTMS Code average coefficient, clay/shale unit masonry25µm/m·Ksourcelongitudinal (flow), mean 23-55 °C
100 mm part over a 50 °C swing36µm growth3.47x less125µm growth
Specific heat837J/kg·Ksourcevalue used in BIA heat-capacity sample calculation1,050J/kg·Ksourcetypical, 23 °C
Heats up and cools (diffusivity)0.585mm²/s3.48x faster0.168mm²/s
Thermal shock resistancenot sourcednot sourced
Melting pointnot sourced223°CsourceDSC (ISO 11357)
Max service temperaturenot sourced205°CsourceHDT 1.8 MPa
Values forSolid extruded clay/shale brick units (BIA 1993 manufacturer survey, TN 3A 2024); face brick of 130 lb/ft3 for thermal properties (BIA TN 4, from ASHRAE 2013); CTE is the TMS Code value for clay/shale masonryBASF 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 Brick stronger than Plastic PBT GF30?

Plastic PBT GF30 is stronger: its tensile strength is 140 MPa against 5.1 MPa for Brick (27.5x).

Which is lighter, Brick or Plastic PBT GF30?

Plastic PBT GF30 is lighter: 1,530 kg/m³ against 2,082 kg/m³ for Brick.

Which is lighter for the same job, Brick or Plastic PBT GF30?

For the same stiffness or strength: Plastic PBT GF30 is lighter for a strong rod or tie, strong beam, strong panel or plate.

Part that must beBrickPlastic PBT GF30
Strong rod or tie37.4x heavierlighter
Strong beam12.4x heavierlighter
Strong panel or plate7.13x heavierlighter

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, Brick or Plastic PBT GF30?

Brick conducts heat better: 1.02 W/m·K against 0.27 W/m·K for Plastic PBT GF30.

Which expands less with temperature?

Brick expands less: 7.2 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 SteelPCB Laminate FR-4SiliconCeramic Alumina 96%Aluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PPS GF40Plastic LCP GF30BrickPlastic PBT GF30
Strength against density

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