PESU GF30 vs PESU GF40
Polymer · grade comparison
PESU-GF30 and PESU GF40 are both polymer grades, compared here in the GF40 condition. PESU GF40 is the stronger of the two: tensile strength 165 MPa (23.9 ksi) against 150 MPa (21.8 ksi) for PESU-GF30, about 10% more. In exchange, PESU-GF30 is the more ductile: elongation 2.5% versus 1.8% for PESU GF40. PESU-GF30 is lighter (1.6 g/cm³ vs 1.66 g/cm³ for PESU GF40) and PESU GF40 is stiffer (13 GPa vs 9.5 GPa). On the shop floor, PESU-GF30 machines more easily (fair vs poor) and PESU GF40 welds better (very good vs fair).
PESU-GF30Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
PESU GF40Choose it when strength drives the design, or when it will be welded.
PESU-GF30 vs PESU GF40: 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
Bulk Modulus
Tensile Strength (Ultimate)
Elongation at Break
Compressive Strength
Compressive Modulus
Flexural Strength
Flexural Modulus
Shear Strength
Izod Impact, Notched
Hardness, Shore D
Hardness, Rockwell M
Yield Strength (0.2% offset)
Fracture Toughness (K_IC)
Hardness, Rockwell R
Same in both: Poisson's Ratio 0.39
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
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)
Same in both: Specific Heat Capacity 1,100 J/kg·K0.26 BTU/lb·°F
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).
UV / Weathering Resistance
Same in both: Corrosion Resistance 85 / 100
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.) 160°C320 °F
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: 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 | PESU-GF30 | PESU GF40 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
PESU-GF30 vs PESU GF40 — frequently asked
Is PESU GF40 stronger than PESU-GF30?
Yes. PESU GF40 has a typical tensile strength of 165 MPa (23.9 ksi) against 150 MPa (21.8 ksi) for PESU-GF30 — about 10% more.
Which is cheaper, PESU-GF30 or PESU GF40?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, PESU-GF30 or PESU GF40?
PESU-GF30. Its machinability rates fair (45/100) against poor (34/100) for PESU GF40; for welding the order is PESU GF40 first (very good, 70/100) then PESU-GF30 (fair, 50/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in PESU-GF30 and PESU GF40 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.