PSU CF30 vs PSU GF20
Polymer · grade comparison
PSU CF30 and PSU-GF20 are both polymer grades, compared here in the CF30 condition. PSU CF30 is the stronger of the two: tensile strength 155 MPa (22.5 ksi) against 100 MPa (14.5 ksi) for PSU-GF20, about 55% more. In exchange, PSU-GF20 is the more ductile: elongation 3% versus 1.7% for PSU CF30. PSU-GF20 is lighter (1.38 g/cm³ vs 1.43 g/cm³ for PSU CF30) and PSU CF30 is stiffer (18 GPa vs 6.2 GPa). On the shop floor, PSU-GF20 welds better (fair vs poor).
PSU CF30Choose it when strength drives the design.
PSU-GF20Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
PSU CF30 vs PSU-GF20: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all polymer 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 polymer 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
Shear Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Compressive Modulus
Flexural Strength
Flexural Modulus
Shear Strength
Izod Impact, Notched
Hardness, Shore D
Hardness, Rockwell M
Hardness, Rockwell R
Physical
Density and transition temperatures.
Density
Glass Transition (Tg)
Water Absorption (Saturation)
Refractive Index
Light Transmission
Same in both: Water Absorption (24 h) 0.22%
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
Vicat Softening Point (B50)
Same in both: Min Service Temperature -100°C-148 °F · Limiting Oxygen Index 32% · Max Service Temperature (short-term) 190°C374 °F
Electrical
Conductivity and insulation.
Dielectric Constant (1 MHz)
Dissipation Factor (1 MHz)
Volume Resistivity
Surface Resistivity
Same in both: Electrical Resistivity 1×10¹⁴ Ω·m3.94×10²¹ µΩ·in · Dielectric Strength 17 kV/mm432 V/mil · Comparative Tracking Index (CTI) 150 V
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.
Weldability
Formability (cold)
Mold Shrinkage
Melt Flow Rate
Mold Temperature (typ.)
Same in both: Machinability 55 / 100 · Polishability 35 / 100 · Processing Melt Temperature (typ.) 355°C671 °F
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Same in both: Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 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.
Manufacturing and finishing
| Capability | PSU CF30 | PSU-GF20 |
|---|---|---|
| CNC machining | Yes | — |
| Sheet metal | Yes | — |
| Injection molding | Yes | — |
| Default condition | Medical Grade | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | 0.5 mm | — |
| Best machined surface | Ra 0.8 µm | — |
| Chrome Plating (Plastic) | Yes | — |
| EMI Shielding Coating | Yes | — |
| Painting | Yes | — |
| Soft Touch Coating | Yes | — |
| Spray Painting | Yes | — |
| UV Coating | Yes | — |
PSU CF30 vs PSU-GF20 — frequently asked
Is PSU CF30 stronger than PSU-GF20?
Yes. PSU CF30 has a typical tensile strength of 155 MPa (22.5 ksi) against 100 MPa (14.5 ksi) for PSU-GF20 — about 55% more.
Which is cheaper, PSU CF30 or PSU-GF20?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, PSU CF30 or PSU-GF20?
PSU-GF20. Its weldability rates fair (40/100) against poor (25/100) for PSU CF30.
Ready to make it?
Upload a CAD file and FabDigit prices the part in PSU CF30 and PSU-GF20 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.