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LCP-GF30 vs LCP Type III

Polymer · grade comparison

LCP-GF30 and LCP Type III are both polymer grades. LCP-GF30 is the stronger of the two: tensile strength 180 MPa (26.1 ksi) against 150 MPa (21.8 ksi) for LCP Type III, about 20% more. LCP Type III is lighter (1.4 g/cm³ vs 1.61 g/cm³ for LCP-GF30) and LCP-GF30 is stiffer (15 GPa vs 10 GPa). On the shop floor, LCP Type III forms better (poor vs not recommended).

LCP-GF30Choose it when strength drives the design, or when the part sees heat.

LCP Type IIIChoose it when weight is the constraint.

LCP-GF30 vs LCP Type III: properties

LCP-GF30LCP Type III

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

15 GPa2.2 Msi
10 GPa1.5 Msi

Poisson's Ratio

0.38
0.36

Tensile Strength (Ultimate)

180 MPa26.1 ksi
150 MPa21.8 ksi

Elongation at Break

2.8%
3%

Compressive Strength

150 MPa21.8 ksi
65 MPa9.4 ksi

Compressive Modulus

11 GPa1.6 Msi
—

Flexural Strength

225 MPa32.6 ksi
140 MPa20.3 ksi

Flexural Modulus

14.5 GPa2.1 Msi
9 GPa1.3 Msi

Shear Strength

90 MPa13.1 ksi
55 MPa8 ksi

Izod Impact, Notched

100 J/m1.9 ft·lbf/in
200 J/m3.7 ft·lbf/in

Hardness, Rockwell M

90 HRM
72 HRM

Shear Modulus

—
1.2 GPa0.17 Msi

Hardness, Shore D

—
88 Shore D

Physical

Density and transition temperatures.

Density

1.61 g/cm³0.06 lb/in³
1.4 g/cm³0.05 lb/in³

Melting Temperature (Tm)

300°C572 °F
285°C545 °F

Glass Transition (Tg)

120°C248 °F
105°C221 °F

Water Absorption (Saturation)

0.1%
0.06%

Same in both: Water Absorption (24 h) 0.02%

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

0.4 W/m·K0.23 BTU/hr·ft·°F
0.3 W/m·K0.17 BTU/hr·ft·°F

Specific Heat Capacity

1,100 J/kg·K0.26 BTU/lb·°F
1,200 J/kg·K0.29 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

12 µm/m·K6.7 µin/in·°F
8 µm/m·K4.4 µin/in·°F

Max Service Temperature (continuous)

220°C428 °F
170°C338 °F

Heat Deflection Temp. @ 0.45 MPa

260°C500 °F
225°C437 °F

Heat Deflection Temp. @ 1.8 MPa

230°C446 °F
185°C365 °F

Limiting Oxygen Index

40%
38%

Max Service Temperature (short-term)

280°C536 °F
230°C446 °F

Same in both: Min Service Temperature -50°C-58 °F

Electrical

Conductivity and insulation.

Dielectric Constant (1 MHz)

3.9
3.4

Dissipation Factor (1 MHz)

0.008
0.004

Same in both: Electrical Resistivity 1×10¹³ Ω·m3.94×10²⁰ µΩ·in · Dielectric Strength 35 kV/mm889 V/mil · Volume Resistivity 1×10¹⁵ Ω·cm · Surface Resistivity 1×10¹⁵ Ω · Comparative Tracking Index (CTI) 200 V

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

UV / Weathering Resistance

40 / 100
45 / 100

Same in both: Corrosion Resistance 92 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Weldability

25 / 100
30 / 100

Formability (cold)

10 / 100
20 / 100

Mold Shrinkage

0.2%
0.15%

Processing Melt Temperature (typ.)

320°C608 °F
310°C590 °F

Mold Temperature (typ.)

110°C230 °F
90°C194 °F

Melt Flow Rate

—
40 g/10 min

Same in both: Machinability 55 / 100 · Polishability 40 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

9 kg CO₂/kg
8.5 kg CO₂/kg

Same in both: Embodied Energy (primary production) 180 MJ/kg77,386 BTU/lb · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 0%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

112 kN·m/kg
107 kN·m/kg

Specific Stiffness (E / density)

9.3 MN·m/kg
7.1 MN·m/kg

Thermal Shock Resistance Index

0
1

Same in both: Thermal Diffusivity 0.2 mm²/s

Strength versus weight

Yield strength against density for every polymer grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.

0.1110100123Density (g/cm³)Yield strength (MPa) — log scale

Manufacturing and finishing

CapabilityLCP-GF30LCP Type III
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

LCP-GF30 vs LCP Type III — frequently asked

Is LCP-GF30 stronger than LCP Type III?

Yes. LCP-GF30 has a typical tensile strength of 180 MPa (26.1 ksi) against 150 MPa (21.8 ksi) for LCP Type III — about 20% more.

Which is cheaper, LCP-GF30 or LCP Type III?

Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which welds better, LCP-GF30 or LCP Type III?

LCP Type III. Its weldability rates poor (30/100) against poor (25/100) for LCP-GF30.

Ready to make it?

Upload a CAD file and FabDigit prices the part in LCP-GF30 and LCP Type III side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.

Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.