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GF Nylon-Like vs PC-Like

Polyurethane · grade comparison

GF Nylon-Like and PC-Like are both polyurethane grades, both rigid pu. PC-Like is the more ductile: elongation 9% versus 5% for GF Nylon-Like. PC-Like is lighter (1.16 g/cm³ vs 1.4 g/cm³ for GF Nylon-Like) and GF Nylon-Like is stiffer (4 GPa vs 2.7 GPa).

GF Nylon-LikeChoose it when the part sees heat.

PC-LikeChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.

GF Nylon-Like vs PC-Like: properties

GF Nylon-LikePC-Like

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

4 GPa0.58 Msi
2.7 GPa0.39 Msi

Elongation at Break

5%
9%

Compressive Strength

100 MPa14.5 ksi
95 MPa13.8 ksi

Flexural Modulus

4.2 GPa0.61 Msi
2.6 GPa0.38 Msi

Izod Impact, Notched

40 J/m0.75 ft·lbf/in
22 J/m0.41 ft·lbf/in

Hardness, Rockwell R

112 HRR
—

Shear Modulus

—
1 GPa0.15 Msi

Bulk Modulus

—
4 GPa0.55 Msi

Yield Strength (0.2% offset)

—
52 MPa7.5 ksi

Compressive Modulus

—
2.5 GPa0.36 Msi

Shear Strength

—
40 MPa5.8 ksi

Hardness, Rockwell M

—
88 HRM

Same in both: Poisson's Ratio 0.38 · Tensile Strength (Ultimate) 60 MPa8.7 ksi · Flexural Strength 92 MPa13.3 ksi · Hardness, Shore D 85 Shore D

Physical

Density and transition temperatures.

Density

1.4 g/cm³0.05 lb/in³
1.16 g/cm³0.04 lb/in³

Glass Transition (Tg)

95°C203 °F
70°C158 °F

Water Absorption (24 h)

0.3%
0.4%

Refractive Index

—
1.51

Light Transmission

—
87%

Same in both: Water Absorption (Saturation) 1.2%

Thermal

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

Thermal Conductivity

0.3 W/m·K0.17 BTU/hr·ft·°F
0.21 W/m·K0.12 BTU/hr·ft·°F

Specific Heat Capacity

1,400 J/kg·K0.33 BTU/lb·°F
1,500 J/kg·K0.36 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

55 µm/m·K30.6 µin/in·°F
90 µm/m·K50 µin/in·°F

Max Service Temperature (continuous)

95°C203 °F
60°C140 °F

Min Service Temperature

-40°C-40 °F
-30°C-22 °F

Heat Deflection Temp. @ 0.45 MPa

105°C221 °F
60°C140 °F

Heat Deflection Temp. @ 1.8 MPa

85°C185 °F
50°C122 °F

Limiting Oxygen Index

21%
20%

Max Service Temperature (short-term)

130°C266 °F
85°C185 °F

Electrical

Conductivity and insulation.

Dielectric Strength

18 kV/mm457 V/mil
17 kV/mm432 V/mil

Dielectric Constant (1 MHz)

3.8
3.4

Surface Resistivity

—
1×10¹⁴ Ω

Same in both: Electrical Resistivity 1×10¹² Ω·m3.94×10¹⁹ µΩ·in · Dissipation Factor (1 MHz) 0.03 · Volume Resistivity 1×10¹⁴ Ω·cm

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

60 / 100
68 / 100

Same in both: UV / Weathering Resistance 25 / 100

Manufacturability

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

Machinability

55 / 100
58 / 100

Polishability

45 / 100
78 / 100

Mold Shrinkage

0.3%
—

Mold Temperature (typ.)

70°C158 °F
—

Weldability

—
8 / 100

Formability (cold)

—
5 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

105 MJ/kg45,142 BTU/lb
115 MJ/kg49,441 BTU/lb

Embodied Carbon (primary production)

5.5 kg CO₂/kg
5.6 kg CO₂/kg

Embodied Water

250 L/kg30 gal/lb
300 L/kg35.9 gal/lb

Same in both: Typical Recycled Content 0%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

43 kN·m/kg
52 kN·m/kg

Specific Stiffness (E / density)

2.9 MN·m/kg
2.3 MN·m/kg

Thermal Diffusivity

0.2 mm²/s
0.1 mm²/s

Same in both: Thermal Shock Resistance Index 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.

71015203050701.11.21.31.4Density (g/cm³)Yield strength (MPa) — log scalePC-LikeGF Nylon-Like

Manufacturing and finishing

CapabilityGF Nylon-LikePC-Like
Default condition——
Relative cost$$ Standard$$ Standard
Min. machined wall——
Best machined surface——

Both are offered for Urethane casting.

GF Nylon-Like vs PC-Like — frequently asked

What is the difference between GF Nylon-Like and PC-Like?

GF Nylon-Like and PC-Like are both polyurethane grades, both rigid pu. PC-Like is the more ductile: elongation 9% versus 5% for GF Nylon-Like. PC-Like is lighter (1.16 g/cm³ vs 1.4 g/cm³ for GF Nylon-Like) and GF Nylon-Like is stiffer (4 GPa vs 2.7 GPa).

Which is cheaper, GF Nylon-Like or PC-Like?

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

When should I choose GF Nylon-Like over PC-Like?

Pick GF Nylon-Like when the part sees heat. Pick PC-Like when the part is bent, formed or impact-loaded, or when weight is the constraint.

Ready to make it?

Upload a CAD file and FabDigit prices the part in GF Nylon-Like and PC-Like 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.