GF Nylon-Like GF30 vs GF Nylon-Like HT
Polyurethane · GF Nylon-Like grade comparison
GF Nylon-Like GF30 and GF Nylon-Like HT are two grades of the same polyurethane grade, GF Nylon-Like: GF30 (~30–40 % glass reinforced) versus HT (heat-resistant / high-Tg glass-filled system). The chemistry is identical, so every difference below comes from the condition. GF Nylon-Like HT is lighter (1.4 g/cm³ vs 1.55 g/cm³ for GF Nylon-Like GF30) and GF Nylon-Like GF30 is stiffer (6 GPa vs 5 GPa).
GF Nylon-Like HTChoose it when weight is the constraint, or when the part sees heat.
GF Nylon-Like GF30 vs GF Nylon-Like HT: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all polyurethane 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 polyurethane 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.
GF Nylon-Like GF30GF Nylon-Like HT
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Compressive Strength
Flexural Strength
Flexural Modulus
Izod Impact, Notched
Hardness, Shore D
Hardness, Rockwell R
Same in both: Poisson's Ratio 0.38 · Elongation at Break 2.5%
Physical
Density and transition temperatures.
Density
Glass Transition (Tg)
Same in both: Water Absorption (24 h) 0.3% · Water Absorption (Saturation) 1.2%
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
Limiting Oxygen Index
Max Service Temperature (short-term)
Same in both: Specific Heat Capacity 1,400 J/kg·K0.33 BTU/lb·°F · Min Service Temperature -40°C-40 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Resistivity 1×10¹² Ω·m3.94×10¹⁹ µΩ·in · Dielectric Strength 18 kV/mm457 V/mil · Dielectric Constant (1 MHz) 3.8 · Dissipation Factor (1 MHz) 0.03 · Volume Resistivity 1×10¹⁴ Ω·cm
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: UV / Weathering Resistance 25 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Mold Shrinkage
Same in both: Polishability 45 / 100 · Mold Temperature (typ.) 70°C158 °F
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 105 MJ/kg45,142 BTU/lb · Embodied Carbon (primary production) 5.5 kg CO₂/kg · Embodied Water 250 L/kg30 gal/lb · Typical Recycled Content 0%
Strength versus weight
Yield strength against density for every polyurethane grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
GF Nylon-Like GF30 vs GF Nylon-Like HT — frequently asked
What is the difference between GF Nylon-Like GF30 and GF Nylon-Like HT?
GF Nylon-Like GF30 and GF Nylon-Like HT are two grades of the same polyurethane grade, GF Nylon-Like: GF30 (~30–40 % glass reinforced) versus HT (heat-resistant / high-Tg glass-filled system). The chemistry is identical, so every difference below comes from the condition. GF Nylon-Like HT is lighter (1.4 g/cm³ vs 1.55 g/cm³ for GF Nylon-Like GF30) and GF Nylon-Like GF30 is stiffer (6 GPa vs 5 GPa).
Which grade does FabDigit quote by default, GF30 or HT?
GF-STD is the default GF Nylon-Like condition in the FabDigit quote flow (neither GF30 nor HT). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which is easier to machine, GF Nylon-Like GF30 or GF Nylon-Like HT?
GF Nylon-Like HT, by a small margin. Both rate fair for machinability — 50/100 against 45/100 for GF Nylon-Like GF30.
Ready to make it?
Upload a CAD file and FabDigit prices the part in GF Nylon-Like GF30 and GF Nylon-Like HT 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.