PPSU GF20 vs PPSU GF30
Polymer · grade comparison
PPSU GF20 and PPSU-GF30 are both polymer grades, compared here in the GF20 condition. PPSU-GF30 is the stronger of the two: tensile strength 125 MPa (18.1 ksi) against 110 MPa (16 ksi) for PPSU GF20, about 14% more. In exchange, PPSU GF20 is the more ductile: elongation 3% versus 2.5% for PPSU-GF30. PPSU GF20 is lighter (1.44 g/cm³ vs 1.56 g/cm³ for PPSU-GF30) and PPSU-GF30 is stiffer (9 GPa vs 6.2 GPa). On the shop floor, PPSU-GF30 machines more easily (good vs fair), PPSU GF20 welds better (very good vs fair), and PPSU-GF30 sits in a lower cost tier (high, $$$$) than PPSU GF20 (specialty, $$$$$).
PPSU GF20Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
PPSU-GF30Choose it when strength drives the design, or when the part is machined in volume.
PPSU GF20 vs PPSU-GF30: 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
Fracture Toughness (K_IC)
Izod Impact, Notched
Hardness, Shore D
Hardness, Rockwell M
Same in both: Hardness, Rockwell R 122 HRR
Physical
Density and transition temperatures.
Density
Water Absorption (24 h)
Water Absorption (Saturation)
Refractive Index
Same in both: Glass Transition (Tg) 220°C428 °F
Thermal
How each material carries heat and how hot it can run.
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Heat Deflection Temp. @ 0.45 MPa
Heat Deflection Temp. @ 1.8 MPa
Vicat Softening Point (B50)
Limiting Oxygen Index
Max Service Temperature (short-term)
Same in both: Thermal Conductivity 0.35 W/m·K0.2 BTU/hr·ft·°F · Max Service Temperature (continuous) 180°C356 °F · Min Service Temperature -50°C-58 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Dielectric Strength
Dielectric Constant (1 MHz)
Dissipation Factor (1 MHz)
Volume Resistivity
Surface Resistivity
Same in both: 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.
Machinability
Weldability
Formability (cold)
Polishability
Mold Shrinkage
Melt Flow Rate
Processing Melt Temperature (typ.)
Same in both: Mold Temperature (typ.) 150°C302 °F
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Same in both: Embodied Carbon (primary production) 8.5 kg CO₂/kg · Embodied Water 500 L/kg59.9 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 | PPSU GF20 | PPSU-GF30 |
|---|---|---|
| CNC machining | Yes | — |
| Sheet metal | Yes | — |
| Injection molding | Yes | — |
| Default condition | Medical Grade | — |
| Relative cost | $$$$$ Specialty | $$$$ High |
| Min. machined wall | 0.5 mm | — |
| Best machined surface | Ra 0.8 µm | — |
| Chrome Plating (Plastic) | Yes | — |
| EMI Shielding Coating | Yes | — |
| Painting | Yes | — |
| Soft Touch Coating | Yes | — |
| Spray Painting | Yes | — |
| UV Coating | Yes | — |
PPSU GF20 vs PPSU-GF30 — frequently asked
Is PPSU-GF30 stronger than PPSU GF20?
Yes. PPSU-GF30 has a typical tensile strength of 125 MPa (18.1 ksi) against 110 MPa (16 ksi) for PPSU GF20 — about 14% more.
Which is cheaper, PPSU GF20 or PPSU-GF30?
PPSU-GF30 is the lower-cost material: it sits in the high tier ($$$$) while PPSU GF20 is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which is easier to machine, PPSU GF20 or PPSU-GF30?
PPSU-GF30. Its machinability rates good (55/100) against fair (45/100) for PPSU GF20; for welding the order is PPSU GF20 first (very good, 70/100) then PPSU-GF30 (fair, 40/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in PPSU GF20 and PPSU-GF30 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.