FabDigit

UF vs MF vs MF Moulding Compound vs G9

Benchmark · 4 materials

Side-by-side benchmark of 4 polymer grades.

UF vs MF and 2 more: properties

UFMFMF Moulding CompoundG9

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

9 GPa1.3 Msi
9 GPa1.3 Msi
8.5 GPa1.2 Msi
18 GPa2.6 Msi

Poisson's Ratio

0.33
0.33
0.34
0.17

Tensile Strength (Ultimate)

65 MPa9.4 ksi
70 MPa10.2 ksi
62 MPa9 ksi
220 MPa31.9 ksi

Elongation at Break

0.8%
0.8%
0.7%
1.5%

Compressive Strength

250 MPa36.3 ksi
250 MPa36.3 ksi
240 MPa34.8 ksi
415 MPa60.2 ksi

Flexural Strength

90 MPa13.1 ksi
100 MPa14.5 ksi
100 MPa14.5 ksi
300 MPa43.5 ksi

Flexural Modulus

9 GPa1.3 Msi
9 GPa1.3 Msi
8.3 GPa1.2 Msi
17 GPa2.5 Msi

Shear Strength

70 MPa10.2 ksi
60 MPa8.7 ksi
130 MPa18.9 ksi

Fracture Toughness (K_IC)

1 MPa·√m0.91 ksi·√in

Izod Impact, Notched

16 J/m0.3 ft·lbf/in
16 J/m0.3 ft·lbf/in
15 J/m0.28 ft·lbf/in
600 J/m11.2 ft·lbf/in

Hardness, Rockwell M

115 HRM
118 HRM
120 HRM
110 HRM

Hardness, Rockwell R

125 HRR

Compressive Modulus

9.5 GPa1.4 Msi

Shear Modulus

6 GPa0.87 Msi

Physical

Density and transition temperatures.

Density

1.5 g/cm³0.05 lb/in³
1.5 g/cm³0.05 lb/in³
1.5 g/cm³0.05 lb/in³
1.95 g/cm³0.07 lb/in³

Glass Transition (Tg)

130°C266 °F
220°C428 °F

Water Absorption (24 h)

0.6%
0.35%
0.4%
0.7%

Water Absorption (Saturation)

2.5%
1.5%
1.6%
1.6%

Refractive Index

1.56

Thermal

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

Thermal Conductivity

0.3 W/m·K0.17 BTU/hr·ft·°F
0.4 W/m·K0.23 BTU/hr·ft·°F
0.3 W/m·K0.17 BTU/hr·ft·°F
0.35 W/m·K0.2 BTU/hr·ft·°F

Specific Heat Capacity

1,500 J/kg·K0.36 BTU/lb·°F
1,600 J/kg·K0.38 BTU/lb·°F
1,600 J/kg·K0.38 BTU/lb·°F
1,100 J/kg·K0.26 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

30 µm/m·K16.7 µin/in·°F
40 µm/m·K22.2 µin/in·°F
40 µm/m·K22.2 µin/in·°F
17 µm/m·K9.4 µin/in·°F

Max Service Temperature (continuous)

75°C167 °F
120°C248 °F
130°C266 °F
150°C302 °F

Min Service Temperature

-40°C-40 °F
-40°C-40 °F
-40°C-40 °F
-60°C-76 °F

Heat Deflection Temp. @ 0.45 MPa

145°C293 °F
200°C392 °F
195°C383 °F

Heat Deflection Temp. @ 1.8 MPa

130°C266 °F
180°C356 °F
180°C356 °F

Limiting Oxygen Index

32%
34%
32%
45%

Max Service Temperature (short-term)

100°C212 °F
150°C302 °F
150°C302 °F
200°C392 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

1×10¹⁰ Ω·m3.94×10¹⁷ µΩ·in
1×10¹⁰ Ω·m3.94×10¹⁷ µΩ·in
1×10¹¹ Ω·m3.94×10¹⁸ µΩ·in
1×10¹¹ Ω·m3.94×10¹⁸ µΩ·in

Dielectric Strength

14 kV/mm356 V/mil
14 kV/mm356 V/mil
13 kV/mm330 V/mil
13.8 kV/mm351 V/mil

Dielectric Constant (1 MHz)

6.6
7
6.5
7.5

Dissipation Factor (1 MHz)

0.035
0.04
0.035
0.025

Volume Resistivity

1×10¹² Ω·cm
1×10¹² Ω·cm
1×10¹³ Ω·cm
1×10¹³ Ω·cm

Surface Resistivity

1×10¹² Ω
1×10¹² Ω
1×10¹³ Ω
1×10¹² Ω

Same in both: Comparative Tracking Index (CTI) 600 V

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

55 / 100
60 / 100
62 / 100
72 / 100

UV / Weathering Resistance

35 / 100
60 / 100
70 / 100
55 / 100

Manufacturability

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

Machinability

40 / 100
40 / 100
45 / 100
28 / 100

Weldability

0 / 100
0 / 100
0 / 100

Formability (cold)

5 / 100
5 / 100
5 / 100

Polishability

70 / 100
75 / 100
80 / 100
30 / 100

Mold Shrinkage

0.8%
1%
0.8%

Mold Temperature (typ.)

155°C311 °F
160°C320 °F
155°C311 °F

Processing Melt Temperature (typ.)

95°C203 °F

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

80 MJ/kg34,394 BTU/lb
100 MJ/kg42,992 BTU/lb
85 MJ/kg36,543 BTU/lb
72 MJ/kg30,954 BTU/lb

Embodied Carbon (primary production)

3.2 kg CO₂/kg
5 kg CO₂/kg
4.5 kg CO₂/kg
4.2 kg CO₂/kg

Embodied Water

120 L/kg14.4 gal/lb
200 L/kg24 gal/lb
180 L/kg21.6 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
47 kN·m/kg
41 kN·m/kg
113 kN·m/kg

Specific Stiffness (E / density)

6 MN·m/kg
6 MN·m/kg
5.7 MN·m/kg
9.2 MN·m/kg

Thermal Diffusivity

0.1 mm²/s
0.2 mm²/s
0.1 mm²/s
0.2 mm²/s

Same in both: Thermal Shock Resistance Index 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.

0.1110100123Density (g/cm³)Yield strength (MPa) — log scale

Manufacturing and finishing

CapabilityUFMFMF Moulding CompoundG9
Default condition
Relative cost$$ Standard$$ Standard$$ Standard$$$$ High
Min. machined wall
Best machined surface

Ready to make it?

Upload a CAD file and FabDigit prices the part in UF and MF 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.