Thermal conductivity against densityHigher and further left: spreads more heat for its weightThermal expansion against thermal conductivityLower and further right: warps less when heated
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SUMIKASUPER LCP Technical Note, Version 04 (2023)Sumitomo Chemicalarchived copyPlastic LCP GF30 · Ultimate tensile strength: tensile strength (ISO 527)Plastic LCP GF30 · Flexural strength: typical (ISO 178)Plastic LCP GF30 · Elongation at break: tensile elongation (ISO 527)Plastic LCP GF30 · Young's modulus (stiffness): tensile modulus (ISO 527)Plastic LCP GF30 · Density: typicalPlastic LCP GF30 · Thermal conductivity: hot disk (ISO 22007-2), temperature not statedPlastic LCP GF30 · Thermal expansion: flow direction (MD), mean 50-150 °CPlastic LCP GF30 · Specific heat: ASTM E1269, temperature not statedPlastic LCP GF30 · Max service temperature: HDT 1.8 MPa (ISO 75)
3
Delrin 100 Product Data SheetDuPontPlastic POM/Acetal · Density: typical (DuPont product information for Delrin 100 NC010; 'The data listed here fall within the normal range of product properties')
Each number points to the document that states it, with the exact basis. Values without a number are computed from the sourced ones. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
Questions
Mechanical
Is Plastic LCP GF30 stronger than Plastic POM/Acetal?
Plastic LCP GF30 is stronger: its tensile strength is 115 MPa against yield strength 69 MPa for Plastic POM/Acetal (1.67x).
Which is lighter, Plastic LCP GF30 or Plastic POM/Acetal?
Plastic POM/Acetal is lighter: 1,420 kg/m³ against 1,610 kg/m³ for Plastic LCP GF30.
Which is stiffer, Plastic LCP GF30 or Plastic POM/Acetal?
Plastic LCP GF30 is stiffer: Young's modulus 11.5 GPa against 2.8 GPa for Plastic POM/Acetal, so the same part in Plastic LCP GF30 deflects less under the same load.
Which is lighter for the same job, Plastic LCP GF30 or Plastic POM/Acetal?
For the same stiffness or strength: Plastic LCP 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 LCP GF30
Plastic POM/Acetal
Stiff rod or tie (tension)
lighter
3.62x heavier
Stiff beam (bending)
lighter
1.79x heavier
Stiff panel or plate
lighter
41% heavier
Strong rod or tie
lighter
47% heavier
Strong beam
lighter
24% heavier
Strong panel or plate
lighter
14% 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 is more ductile, Plastic LCP GF30 or Plastic POM/Acetal?
Plastic POM/Acetal stretches further before it breaks: 75% elongation at break against 1.5% for Plastic LCP GF30.
Thermal
Which handles higher temperatures, Plastic LCP GF30 or Plastic POM/Acetal?
Plastic LCP GF30 does: 288 °C against 125 °C for Plastic POM/Acetal.
Which conducts heat better, Plastic LCP GF30 or Plastic POM/Acetal?
Plastic LCP GF30 conducts heat better: 0.5 W/m·K against 0.4 W/m·K for Plastic POM/Acetal.
Which expands less with temperature?
Plastic LCP GF30 expands less: 20 µm/m·K against 122 µm/m·K for Plastic POM/Acetal.