PU-GF-Filled vs PU-PMMA-like
Polyurethane · grade comparison
PU-GF-Filled and PU-PMMA-like are both polyurethane grades. PU-PMMA-like is the stronger of the two: tensile strength 65 MPa (9.43 ksi) against 60 MPa (8.7 ksi) for PU-GF-Filled, about 8% more. PU-PMMA-like is the more ductile: elongation 10% versus 2.5% for PU-GF-Filled. PU-PMMA-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 2.5 GPa). On the shop floor, PU-PMMA-like machines more easily (very good vs good).
PU-GF-FilledChoose it when the part sees heat.
PU-PMMA-likeChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
PU-GF-Filled vs PU-PMMA-like: 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.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Elongation at Break
Compressive Strength
Compressive Modulus
Flexural Modulus
Izod Impact, Notched
Hardness, Shore D
Hardness, Rockwell R
Yield Strength (0.2% offset)
Shear Strength
Fracture Toughness (K_IC)
Hardness, Rockwell M
Same in both: Flexural Strength 95 MPa13.8 ksi
Physical
Density and transition temperatures.
Density
Glass Transition (Tg)
Water Absorption (24 h)
Water Absorption (Saturation)
Refractive Index
Light Transmission
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
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)
Vicat Softening Point (B50)
Same in both: Min Service Temperature -30°C-22 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Dielectric Constant (1 MHz)
Volume Resistivity
Surface Resistivity
Comparative Tracking Index (CTI)
Same in both: Dielectric Strength 18 kV/mm457 V/mil · Dissipation Factor (1 MHz) 0.04
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
UV / Weathering Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Polishability
Processing Melt Temperature (typ.)
Same in both: Weldability 5 / 100 · Formability (cold) 5 / 100 · Mold Shrinkage 0.15% · Mold Temperature (typ.) 65°C149 °F
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 0%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Thermal Diffusivity
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.
Manufacturing and finishing
| Capability | PU-GF-Filled | PU-PMMA-like |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
PU-GF-Filled vs PU-PMMA-like — frequently asked
Is PU-PMMA-like stronger than PU-GF-Filled?
Yes. PU-PMMA-like has a typical tensile strength of 65 MPa (9.43 ksi) against 60 MPa (8.7 ksi) for PU-GF-Filled — about 8% more.
Which is cheaper, PU-GF-Filled or PU-PMMA-like?
Both sit in the same relative cost tier ($$$$, 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-PMMA-like?
PU-PMMA-like. Its machinability rates very good (75/100) 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-PMMA-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.