LCP GF30 vs LCP GF40
Polymer · grade comparison
LCP-GF30 and LCP GF40 are both polymer grades, compared here in the GF40 condition. LCP GF40 is the stronger of the two: tensile strength 200 MPa (29 ksi) against 180 MPa (26.1 ksi) for LCP-GF30, about 11% more. In exchange, LCP-GF30 is the more ductile: elongation 2.8% versus 1.6% for LCP GF40. LCP-GF30 is lighter (1.61 g/cm³ vs 1.71 g/cm³ for LCP GF40) and LCP GF40 is stiffer (18.5 GPa vs 15 GPa). On the shop floor, LCP-GF30 machines more easily (good vs fair) and LCP-GF30 sits in a lower cost tier (high, $$$$) than LCP GF40 (specialty, $$$$$).
LCP-GF30Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
LCP GF40Choose it when strength drives the design.
LCP-GF30 vs LCP GF40: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all polymer grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all polymer grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Elongation at Break
Compressive Strength
Compressive Modulus
Flexural Strength
Flexural Modulus
Shear Strength
Izod Impact, Notched
Hardness, Rockwell M
Hardness, Shore D
Physical
Density and transition temperatures.
Density
Melting Temperature (Tm)
Glass Transition (Tg)
Water Absorption (24 h)
Water Absorption (Saturation)
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Heat Deflection Temp. @ 0.45 MPa
Heat Deflection Temp. @ 1.8 MPa
Same in both: Specific Heat Capacity 1,100 J/kg·K0.26 BTU/lb·°F · Min Service Temperature -50°C-58 °F · Limiting Oxygen Index 40% · Max Service Temperature (short-term) 280°C536 °F
Electrical
Conductivity and insulation.
Dielectric Constant (1 MHz)
Surface Resistivity
Same in both: Electrical Resistivity 1×10¹³ Ω·m3.94×10²⁰ µΩ·in · Dielectric Strength 35 kV/mm889 V/mil · Dissipation Factor (1 MHz) 0.008 · Volume Resistivity 1×10¹⁵ Ω·cm · Comparative Tracking Index (CTI) 200 V
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
UV / Weathering Resistance
Same in both: Corrosion Resistance 92 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Polishability
Mold Shrinkage
Processing Melt Temperature (typ.)
Mold Temperature (typ.)
Same in both: Weldability 25 / 100 · Formability (cold) 10 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Water
Same in both: Embodied Carbon (primary production) 9 kg CO₂/kg · Typical Recycled Content 0%
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.
Manufacturing and finishing
| Capability | LCP-GF30 | LCP GF40 |
|---|---|---|
| Injection molding | — | Yes |
| Default condition | — | GF30 |
| Relative cost | $$$$ High | $$$$$ Specialty |
| Min. machined wall | — | — |
| Best machined surface | — | — |
| Chrome Plating (Plastic) | — | Yes |
| EMI Shielding Coating | — | Yes |
| Soft Touch Coating | — | Yes |
| Spray Painting | — | Yes |
| UV Coating | — | Yes |
LCP-GF30 vs LCP GF40 — frequently asked
Is LCP GF40 stronger than LCP-GF30?
Yes. LCP GF40 has a typical tensile strength of 200 MPa (29 ksi) against 180 MPa (26.1 ksi) for LCP-GF30 — about 11% more.
Which is cheaper, LCP-GF30 or LCP GF40?
LCP-GF30 is the lower-cost material: it sits in the high tier ($$$$) while LCP GF40 is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which is easier to machine, LCP-GF30 or LCP GF40?
LCP-GF30. Its machinability rates good (55/100) against fair (45/100) for LCP GF40.
Ready to make it?
Upload a CAD file and FabDigit prices the part in LCP-GF30 and LCP GF40 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.