mPPE GF30 vs mPPE PPE-PA
Polymer · mPPE grade comparison
mPPE GF30 and mPPE PPE-PA are two grades of the same polymer grade, mPPE: GF30 (30% glass-fiber reinforced) versus PPE-PA (PPE+PA alloy). The chemistry is identical, so every difference below comes from the condition. mPPE GF30 is the stronger of the two: yield strength 58 MPa (8.41 ksi) against 55 MPa (7.98 ksi) for mPPE PPE-PA, about 5% more; tensile strength follows at 112 MPa (16.2 ksi) vs 58 MPa (8.41 ksi). In exchange, mPPE PPE-PA is the more ductile: elongation 45% versus 3.5% for mPPE GF30. MPPE PPE-PA is lighter (1.1 g/cm³ vs 1.27 g/cm³ for mPPE GF30) and mPPE GF30 is stiffer (7.8 GPa vs 2.1 GPa). On the shop floor, mPPE PPE-PA machines more easily (good vs fair).
mPPE GF30Choose it when strength drives the design.
mPPE PPE-PAChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
mPPE GF30 vs mPPE PPE-PA: 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)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Flexural Strength
Flexural Modulus
Shear Strength
Fracture Toughness (K_IC)
Izod Impact, Notched
Hardness, Rockwell M
Hardness, Rockwell R
Same in both: Shear Modulus 0.9 GPa0.13 Msi · Bulk Modulus 3 GPa0.49 Msi · Poisson's Ratio 0.38 · Compressive Modulus 2.3 GPa0.33 Msi
Physical
Density and transition temperatures.
Density
Water Absorption (24 h)
Same in both: Glass Transition (Tg) 145°C293 °F · Water Absorption (Saturation) 0.6%
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
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
Same in both: Specific Heat Capacity 1,400 J/kg·K0.33 BTU/lb·°F · Max Service Temperature (continuous) 110°C230 °F · Min Service Temperature -40°C-40 °F · Max Service Temperature (short-term) 130°C266 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Same in both: Dielectric Strength 21 kV/mm533 V/mil · Dielectric Constant (1 MHz) 2.65 · Dissipation Factor (1 MHz) 0.0012 · Volume Resistivity 1×10¹⁶ Ω·cm · Surface Resistivity 1×10¹⁵ Ω · Comparative Tracking Index (CTI) 400 V
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)
Mold Shrinkage
Processing Melt Temperature (typ.)
Same in both: Polishability 60 / 100 · Melt Flow Rate 6 g/10 min · Mold Temperature (typ.) 90°C194 °F
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 110 MJ/kg47,292 BTU/lb · Embodied Carbon (primary production) 4.6 kg CO₂/kg · Embodied Water 210 L/kg25.2 gal/lb · Typical Recycled Content 5%
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.
mPPE GF30 vs mPPE PPE-PA — frequently asked
Is mPPE GF30 stronger than mPPE PPE-PA?
Yes. mPPE GF30 has a typical yield strength of 58 MPa (8.41 ksi) against 55 MPa (7.98 ksi) for mPPE PPE-PA — about 5% more. Tensile strength is 112 MPa (16.2 ksi) vs 58 MPa (8.41 ksi).
Which grade does FabDigit quote by default, GF30 or PPE-PA?
UNF is the default mPPE condition in the FabDigit quote flow (neither GF30 nor PPE-PA). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which is easier to machine, mPPE GF30 or mPPE PPE-PA?
mPPE PPE-PA. Its machinability rates good (62/100) against fair (45/100) for mPPE GF30; for welding the order is mPPE GF30 first (good, 65/100) then mPPE PPE-PA (good, 60/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in mPPE GF30 and mPPE PPE-PA 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.