mPPE vs PPE-GF30
Polymer · grade comparison
mPPE and PPE-GF30 are both polymer grades. PPE-GF30 is the stronger of the two: tensile strength 120 MPa (17.4 ksi) against 58 MPa (8.41 ksi) for mPPE, about 107% more. In exchange, mPPE is the more ductile: elongation 50% versus 2.5% for PPE-GF30. MPPE is lighter (1.08 g/cm³ vs 1.28 g/cm³ for PPE-GF30) and PPE-GF30 is stiffer (9 GPa vs 2.4 GPa). On the shop floor, mPPE machines more easily (65 vs 55 out of 100) and mPPE welds better (good vs fair).
mPPEChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
PPE-GF30Choose it when strength drives the design, or when the part sees heat.
mPPE vs PPE-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
Bulk 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, Rockwell M
Hardness, Rockwell R
Hardness, Shore D
Physical
Density and transition temperatures.
Density
Glass Transition (Tg)
Water Absorption (Saturation)
Same in both: Water Absorption (24 h) 0.07%
Thermal
How each material carries heat and how hot it can run.
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)
Max Service Temperature (short-term)
Same in both: Thermal Conductivity 0.22 W/m·K0.13 BTU/hr·ft·°F · Min Service Temperature -40°C-40 °F · Limiting Oxygen Index 25%
Electrical
Conductivity and insulation.
Dielectric Strength
Dielectric Constant (1 MHz)
Dissipation Factor (1 MHz)
Comparative Tracking Index (CTI)
Same in both: Electrical Resistivity 1×10¹⁴ Ω·m3.94×10²¹ µΩ·in · Volume Resistivity 1×10¹⁶ Ω·cm · Surface Resistivity 1×10¹⁵ Ω
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: UV / Weathering Resistance 35 / 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.)
Mold Temperature (typ.)
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Water
Same in both: Embodied Carbon (primary production) 4.6 kg CO₂/kg · Typical Recycled Content 5%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Same in both: Thermal Diffusivity 0.1 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 | mPPE | PPE-GF30 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$ Premium | $$$ Premium |
| Min. machined wall | — | — |
| Best machined surface | — | — |
mPPE vs PPE-GF30 — frequently asked
Is PPE-GF30 stronger than mPPE?
Yes. PPE-GF30 has a typical tensile strength of 120 MPa (17.4 ksi) against 58 MPa (8.41 ksi) for mPPE — about 107% more.
Which is cheaper, mPPE or PPE-GF30?
Both sit in the same relative cost tier ($$$, premium); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, mPPE or PPE-GF30?
mPPE, by a small margin. Both rate good for machinability — 65/100 against 55/100 for PPE-GF30; for welding the order is mPPE first (good, 65/100) then PPE-GF30 (fair, 45/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in mPPE and PPE-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.