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Ceramic Aluminum Nitride vs. Plastic PBT GF30

Compare Ceramic Aluminum Nitride vs. Plastic PBT GF30 strength, stiffness, weight and thermal properties.

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Ceramic Aluminum NitrideSintered ceramic (pressed and fired)
Plastic PBT GF30Bulk polymer (molded or machined)
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Mechanical
Yield strengthnot sourcednot given (tensile used)
Ultimate tensile strengthnot sourced140MPasourcestress at break, 23 °C
Flexural strength310MPasource3-point bending strength (JIS R 1601)210MPasourcetypical, 23 °C
Elongation at breaknot sourced3%sourcestrain at break, 23 °C
Young's modulus (stiffness)320GPasourcetypical (JIS R 1602)9.8GPasourcetypical, 23 °C
Density3,400kg/m³sourcetypical (JIS R 1634)1,530kg/m³sourcetypical
Strength to weightnot sourced91.5kN·m/kg
Stiffness to weight94.1MN·m/kg14.7x higher6.41MN·m/kg
Poisson's ratio0.24sourcetypical (JIS R 1602)not sourced
Shear modulus129GPanot sourced
Bulk modulus205GPanot sourced
Speed of sound9,701m/s2,531m/s
Thermal
Thermal conductivity150W/m·Ksourcetypical (JIS R 1611)0.27W/m·Ksourcetypical (DIN 52612-1)
Thermal expansion4.6µm/m·Ksourcemean, 40-400 °C (JIS R 1618)25µm/m·Ksourcelongitudinal (flow), mean 23-55 °C
100 mm part over a 50 °C swing23µm growth5.43x less125µm growth
Specific heat710J/kg·Ksourcetypical (JIS R 1611)1,050J/kg·Ksourcetypical, 23 °C
Heats up and cools (diffusivity)62.1mm²/s370x faster0.168mm²/s
Thermal shock resistancenot sourcednot sourced
Melting pointnot sourced223°CsourceDSC (ISO 11357)
Max service temperaturenot sourced205°CsourceHDT 1.8 MPa
Values forKYOCERA AN216A dense sintered aluminium nitride, typical values; KYOCERA Fineceramics Europe data sheet 2023.04.03BASF 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

Which is lighter, Ceramic Aluminum Nitride or Plastic PBT GF30?

Plastic PBT GF30 is lighter: 1,530 kg/m³ against 3,400 kg/m³ for Ceramic Aluminum Nitride.

Which is stiffer, Ceramic Aluminum Nitride or Plastic PBT GF30?

Ceramic Aluminum Nitride is stiffer: Young's modulus 320 GPa against 9.8 GPa for Plastic PBT GF30, so the same part in Ceramic Aluminum Nitride deflects less under the same load.

Which is lighter for the same job, Ceramic Aluminum Nitride or Plastic PBT GF30?

For the same stiffness or strength: Ceramic Aluminum Nitride is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate.

Part that must beCeramic Aluminum NitridePlastic PBT GF30
Stiff rod or tie (tension)lighter14.7x heavier
Stiff beam (bending)lighter2.57x heavier
Stiff panel or platelighter44% heavier

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, Ceramic Aluminum Nitride or Plastic PBT GF30?

Ceramic Aluminum Nitride conducts heat better: 150 W/m·K against 0.27 W/m·K for Plastic PBT GF30.

Which expands less with temperature?

Ceramic Aluminum Nitride expands less: 4.6 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%Aluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PPS GF40Plastic LCP GF30Ceramic Aluminum NitridePlastic 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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