Plastic LCP GF30 vs. Plastic Polypropylene

Compare Plastic LCP GF30 vs. Plastic Polypropylene strength, stiffness, weight and thermal properties.

Plastic LCP GF30Bulk polymer (molded or machined)

Plastic PolypropyleneBulk polymer (molded or machined)

Mechanical	Plastic LCP GF30	Plastic Polypropylene
Yield strength	not given (tensile used)	33MPa1
Ultimate tensile strength	tensile strength115MPa2	not stated (yield given)
Flexural strength	184MPa2	not sourced
Elongation at break	tensile elongation1.5%2	not sourced
Young's modulus (stiffness)	tensile modulus11.5GPa27.93x stiffer	1.45GPa1
Density	1,610kg/m³2	900kg/m³11.79x lighter
Strength to weight	71.4kN·m/kg1.95x higher	36.7kN·m/kg
Stiffness to weight	7.14MN·m/kg4.43x higher	1.61MN·m/kg
Poisson's ratio	not sourced	base material0.423
Shear modulus	not sourced	0.511GPa
Bulk modulus	not sourced	3.02GPa
Speed of sound	2,673m/s2.11x faster	1,269m/s

Stiffness against densityHigher and further left: stiffer for its weight

Strength against densityHigher and further left: stronger for its weight

Thermal	Plastic LCP GF30	Plastic Polypropylene
Thermal conductivity	hot disk0.5W/m·K2	base material0.17–0.22W/m·K3
Thermal expansion	flow direction20µm/m·K2	base material80–100µm/m·K3
100 mm part over a 50 °C swing	100µm growth4.5x less	450µm growth
Specific heat	ASTM E1269839J/kg·K2	not sourced
Heats up and cools (diffusivity)	0.37mm²/s	not sourced
Thermal shock resistance	not sourced	28.6W/m
Max service temperature	HDT 1.8 MPa288°C2	HDT 0.45 MPa90°C1

Thermal conductivity against densityHigher and further left: spreads more heat for its weight

Thermal expansion against thermal conductivityLower and further right: warps less when heated

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Sources3 documents: LyondellBasell, Sumitomo Chemical, INEOS Olefins & Polymers USA

Plastic LCP GF30: Sumitomo Chemical SUMIKASUPER LCP E6006L (30% glass fibre; high strength, low shrinkage); SUMIKASUPER LCP Technical Note, Version 04 / Nov. 2023, typical values.
Plastic Polypropylene: LyondellBasell Moplen HP501H polypropylene homopolymer (general purpose), typical ISO values

1
Moplen HP501H Product DataLyondellBasellPlastic Polypropylene · Yield strength: typical, tensile stress at yield ISO 527Plastic Polypropylene · Young's modulus (stiffness): typical, tensile modulus ISO 527Plastic Polypropylene · Density: typical, 23 °C ISO 1183-1Plastic Polypropylene · Max service temperature: HDT 0.45 MPa (ISO 75B), unannealed
2
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
Typical Engineering Properties of PolypropyleneINEOS Olefins & Polymers USAarchived copyPlastic Polypropylene · Poisson's ratio: base material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene)Plastic Polypropylene · Thermal conductivity: base material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene)Plastic Polypropylene · Thermal expansion: base material: polypropylene homopolymer family (INEOS Olefins & Polymers USA, Typical Engineering Properties of Polypropylene)

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 Polypropylene?

Plastic LCP GF30 is stronger: its tensile strength is 115 MPa against yield strength 33 MPa for Plastic Polypropylene (3.48x).

Which is lighter, Plastic LCP GF30 or Plastic Polypropylene?

Plastic Polypropylene is lighter: 900 kg/m³ against 1,610 kg/m³ for Plastic LCP GF30.

Which is stiffer, Plastic LCP GF30 or Plastic Polypropylene?

Plastic LCP GF30 is stiffer: Young's modulus 11.5 GPa against 1.45 GPa for Plastic Polypropylene, 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 Polypropylene?

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 Polypropylene
Stiff rod or tie (tension)	lighter	4.43x heavier
Stiff beam (bending)	lighter	1.57x heavier
Stiff panel or plate	lighter	11% heavier
Strong rod or tie	lighter	1.95x heavier
Strong beam	lighter	28% heavier
Strong panel or plate	lighter	4% 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).

Thermal

Which conducts heat better, Plastic LCP GF30 or Plastic Polypropylene?

Plastic LCP GF30 conducts heat better: 0.5 W/m·K against 0.195 W/m·K for Plastic Polypropylene.

Which expands less with temperature?

Plastic LCP GF30 expands less: 20 µm/m·K against 90 µm/m·K for Plastic Polypropylene.