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PU-GF-Filled vs PU-Nylon-like

Polyurethane · grade comparison

PU-GF-Filled and PU-Nylon-like are both polyurethane grades. PU-GF-Filled is the stronger of the two: tensile strength 60 MPa (8.7 ksi) against 55 MPa (7.98 ksi) for PU-Nylon-like, about 9% more. In exchange, PU-Nylon-like is the more ductile: elongation 25% versus 2.5% for PU-GF-Filled, and PU-GF-Filled is harder (87 Shore D vs 82 Shore D). PU-Nylon-like is lighter (1.13 g/cm³ vs 1.55 g/cm³ for PU-GF-Filled) and PU-GF-Filled is stiffer (5.5 GPa vs 1.9 GPa). On the shop floor, PU-Nylon-like machines more easily (very good vs good).

PU-GF-FilledChoose it when strength drives the design, or when the part sees heat.

PU-Nylon-likeChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.

PU-GF-Filled vs PU-Nylon-like: properties

PU-GF-FilledPU-Nylon-like

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

5.5 GPa0.8 Msi
1.9 GPa0.28 Msi

Poisson's Ratio

0.38
0.4

Tensile Strength (Ultimate)

60 MPa8.7 ksi
55 MPa8 ksi

Elongation at Break

2.5%
25%

Compressive Strength

110 MPa16 ksi
80 MPa11.6 ksi

Compressive Modulus

5 GPa0.73 Msi
1.8 GPa0.26 Msi

Flexural Strength

95 MPa13.8 ksi
75 MPa10.9 ksi

Flexural Modulus

5.5 GPa0.8 Msi
2 GPa0.29 Msi

Izod Impact, Notched

30 J/m0.56 ft·lbf/in
60 J/m1.1 ft·lbf/in

Hardness, Shore D

87 Shore D
82 Shore D

Hardness, Rockwell R

118 HRR
108 HRR

Yield Strength (0.2% offset)

—
48 MPa7 ksi

Physical

Density and transition temperatures.

Density

1.55 g/cm³0.06 lb/in³
1.13 g/cm³0.04 lb/in³

Glass Transition (Tg)

95°C203 °F
75°C167 °F

Water Absorption (24 h)

0.2%
0.4%

Water Absorption (Saturation)

1%
1.5%

Thermal

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

Thermal Conductivity

0.35 W/m·K0.2 BTU/hr·ft·°F
0.2 W/m·K0.12 BTU/hr·ft·°F

Specific Heat Capacity

1,300 J/kg·K0.31 BTU/lb·°F
1,600 J/kg·K0.38 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

45 µm/m·K25 µin/in·°F
110 µm/m·K61.1 µin/in·°F

Max Service Temperature (continuous)

100°C212 °F
80°C176 °F

Heat Deflection Temp. @ 0.45 MPa

112°C234 °F
88°C190 °F

Heat Deflection Temp. @ 1.8 MPa

90°C194 °F
70°C158 °F

Limiting Oxygen Index

21%
20%

Max Service Temperature (short-term)

130°C266 °F
110°C230 °F

Same in both: Min Service Temperature -30°C-22 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

1×10¹¹ Ω·m3.94×10¹⁸ µΩ·in
1×10¹² Ω·m3.94×10¹⁹ µΩ·in

Dielectric Strength

18 kV/mm457 V/mil
20 kV/mm508 V/mil

Dielectric Constant (1 MHz)

4.5
3.6

Dissipation Factor (1 MHz)

0.04
0.03

Volume Resistivity

1×10¹³ Ω·cm
1×10¹⁴ Ω·cm

Surface Resistivity

1×10¹³ Ω
1×10¹⁴ Ω

Comparative Tracking Index (CTI)

500 V
—

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

80 / 100
72 / 100

Same in both: UV / Weathering Resistance 25 / 100

Manufacturability

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

Machinability

60 / 100
72 / 100

Polishability

55 / 100
65 / 100

Mold Shrinkage

0.15%
0.3%

Processing Melt Temperature (typ.)

—
50°C122 °F

Same in both: Weldability 5 / 100 · Formability (cold) 5 / 100 · Mold Temperature (typ.) 65°C149 °F

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

90 MJ/kg38,693 BTU/lb
100 MJ/kg42,992 BTU/lb

Embodied Carbon (primary production)

5 kg CO₂/kg
5.5 kg CO₂/kg

Embodied Water

200 L/kg24 gal/lb
250 L/kg30 gal/lb

Same in both: Typical Recycled Content 0%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

39 kN·m/kg
49 kN·m/kg

Specific Stiffness (E / density)

3.5 MN·m/kg
1.7 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 scalePU-Nylon-like

Manufacturing and finishing

CapabilityPU-GF-FilledPU-Nylon-like
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

PU-GF-Filled vs PU-Nylon-like — frequently asked

Is PU-GF-Filled stronger than PU-Nylon-like?

Yes. PU-GF-Filled has a typical tensile strength of 60 MPa (8.7 ksi) against 55 MPa (7.98 ksi) for PU-Nylon-like — about 9% more.

Which is cheaper, PU-GF-Filled or PU-Nylon-like?

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 is easier to machine, PU-GF-Filled or PU-Nylon-like?

PU-Nylon-like. Its machinability rates very good (72/100) against good (60/100) for PU-GF-Filled.

Ready to make it?

Upload a CAD file and FabDigit prices the part in PU-GF-Filled and PU-Nylon-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.