PPSU-GF30 vs PSU-GF20
Polymer · grade comparison
PPSU-GF30 and PSU-GF20 are both polymer grades. PPSU-GF30 is the stronger of the two: tensile strength 125 MPa (18.1 ksi) against 100 MPa (14.5 ksi) for PSU-GF20, about 25% more. In exchange, PSU-GF20 is the more ductile: elongation 3% versus 2.5% for PPSU-GF30. PSU-GF20 is lighter (1.38 g/cm³ vs 1.56 g/cm³ for PPSU-GF30) and PPSU-GF30 is stiffer (9 GPa vs 6.2 GPa).
PPSU-GF30Choose it when strength drives the design, or when the part sees heat.
PSU-GF20Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
PPSU-GF30 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
Tensile Strength (Ultimate)
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
Shear Modulus
Same in both: Poisson's Ratio 0.39 · Hardness, Rockwell R 122 HRR
Physical
Density and transition temperatures.
Density
Glass Transition (Tg)
Water Absorption (24 h)
Water Absorption (Saturation)
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)
Min Service Temperature
Heat Deflection Temp. @ 0.45 MPa
Heat Deflection Temp. @ 1.8 MPa
Vicat Softening Point (B50)
Limiting Oxygen Index
Max Service Temperature (short-term)
Electrical
Conductivity and insulation.
Electrical Resistivity
Dielectric Strength
Dielectric Constant (1 MHz)
Dissipation Factor (1 MHz)
Volume Resistivity
Same in both: Surface Resistivity 1×10¹⁵ Ω · 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.
Formability (cold)
Mold Shrinkage
Melt Flow Rate
Processing Melt Temperature (typ.)
Same in both: Machinability 55 / 100 · Weldability 40 / 100 · Polishability 35 / 100 · Mold Temperature (typ.) 150°C302 °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)
Same in both: Thermal Diffusivity 0.2 mm²/s · 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.
Manufacturing and finishing
| Capability | PPSU-GF30 | PSU-GF20 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
PPSU-GF30 vs PSU-GF20 — frequently asked
Is PPSU-GF30 stronger than PSU-GF20?
Yes. PPSU-GF30 has a typical tensile strength of 125 MPa (18.1 ksi) against 100 MPa (14.5 ksi) for PSU-GF20 — about 25% more.
Which is cheaper, PPSU-GF30 or PSU-GF20?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
When should I choose PPSU-GF30 over PSU-GF20?
Pick PPSU-GF30 when strength drives the design, or when the part sees heat. Pick PSU-GF20 when the part is bent, formed or impact-loaded, or when weight is the constraint.
Ready to make it?
Upload a CAD file and FabDigit prices the part in PPSU-GF30 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.