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ABS-Like FR vs GF Nylon-Like

Polyurethane · grade comparison

ABS-Like FR and GF Nylon-Like are both polyurethane grades, both rigid pu. GF Nylon-Like is the stronger of the two: tensile strength 60 MPa (8.7 ksi) against 50 MPa (7.25 ksi) for ABS-Like FR, about 20% more. In exchange, ABS-Like FR is the more ductile: elongation 9% versus 5% for GF Nylon-Like. ABS-Like FR is lighter (1.17 g/cm³ vs 1.4 g/cm³ for GF Nylon-Like) and GF Nylon-Like is stiffer (4 GPa vs 2.3 GPa). On the shop floor, ABS-Like FR machines more easily (very good vs good).

ABS-Like FRChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.

GF Nylon-LikeChoose it when strength drives the design, or when the part sees heat.

ABS-Like FR vs GF Nylon-Like: properties

ABS-Like FRGF Nylon-Like

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

2.3 GPa0.33 Msi
4 GPa0.58 Msi

Poisson's Ratio

0.39
0.38

Tensile Strength (Ultimate)

50 MPa7.3 ksi
60 MPa8.7 ksi

Yield Strength (0.2% offset)

45 MPa6.5 ksi
—

Elongation at Break

9%
5%

Compressive Strength

72 MPa10.4 ksi
100 MPa14.5 ksi

Compressive Modulus

2.2 GPa0.32 Msi
—

Flexural Strength

72 MPa10.4 ksi
92 MPa13.3 ksi

Flexural Modulus

2.4 GPa0.35 Msi
4.2 GPa0.61 Msi

Izod Impact, Notched

30 J/m0.56 ft·lbf/in
40 J/m0.75 ft·lbf/in

Hardness, Shore D

82 Shore D
85 Shore D

Hardness, Rockwell R

104 HRR
112 HRR

Physical

Density and transition temperatures.

Density

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

Glass Transition (Tg)

80°C176 °F
95°C203 °F

Water Absorption (24 h)

0.35%
0.3%

Same in both: Water Absorption (Saturation) 1.2%

Thermal

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

Thermal Conductivity

0.22 W/m·K0.13 BTU/hr·ft·°F
0.3 W/m·K0.17 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

80 µm/m·K44.4 µin/in·°F
55 µm/m·K30.6 µin/in·°F

Max Service Temperature (continuous)

70°C158 °F
95°C203 °F

Min Service Temperature

-30°C-22 °F
-40°C-40 °F

Heat Deflection Temp. @ 0.45 MPa

72°C162 °F
105°C221 °F

Heat Deflection Temp. @ 1.8 MPa

58°C136 °F
85°C185 °F

Vicat Softening Point (B50)

76°C169 °F
—

Limiting Oxygen Index

28%
21%

Max Service Temperature (short-term)

100°C212 °F
130°C266 °F

Electrical

Conductivity and insulation.

Dielectric Constant (1 MHz)

3.6
3.8

Surface Resistivity

1×10¹⁴ Ω
—

Comparative Tracking Index (CTI)

500 V
—

Same in both: Electrical Resistivity 1×10¹² Ω·m3.94×10¹⁹ µΩ·in · Dielectric Strength 18 kV/mm457 V/mil · Dissipation Factor (1 MHz) 0.03 · Volume Resistivity 1×10¹⁴ Ω·cm

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

75 / 100
60 / 100

UV / Weathering Resistance

30 / 100
25 / 100

Manufacturability

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

Machinability

75 / 100
55 / 100

Weldability

10 / 100
—

Formability (cold)

5 / 100
—

Polishability

70 / 100
45 / 100

Mold Shrinkage

0.15%
0.3%

Mold Temperature (typ.)

60°C140 °F
70°C158 °F

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

100 MJ/kg42,992 BTU/lb
105 MJ/kg45,142 BTU/lb

Embodied Water

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

Same in both: Embodied Carbon (primary production) 5.5 kg CO₂/kg · Typical Recycled Content 0%

Common Calculations

Ratios derived from the values above.

Specific Stiffness (E / density)

2 MN·m/kg
2.9 MN·m/kg

Thermal Diffusivity

0.1 mm²/s
0.2 mm²/s

Same in both: Specific Strength (UTS / density) 43 kN·m/kg · 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 scaleABS-Like FRGF Nylon-Like

Manufacturing and finishing

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

Both are offered for Urethane casting.

ABS-Like FR vs GF Nylon-Like — frequently asked

Is GF Nylon-Like stronger than ABS-Like FR?

Yes. GF Nylon-Like has a typical tensile strength of 60 MPa (8.7 ksi) against 50 MPa (7.25 ksi) for ABS-Like FR — about 20% more.

Which is cheaper, ABS-Like FR or GF Nylon-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.

Which is easier to machine, ABS-Like FR or GF Nylon-Like?

ABS-Like FR. Its machinability rates very good (75/100) against good (55/100) for GF Nylon-Like.

Ready to make it?

Upload a CAD file and FabDigit prices the part in ABS-Like FR and GF 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.