mPPE GF10 vs mPPE GF20
Polymer · mPPE grade comparison
mPPE GF10 and mPPE GF20 are two grades of the same polymer grade, mPPE: GF10 (10% glass-fiber reinforced) versus GF20 (20% glass-fiber reinforced). The chemistry is identical, so every difference below comes from the condition. mPPE GF20 is the stronger of the two: tensile strength 95 MPa (13.8 ksi) against 76 MPa (11 ksi) for mPPE GF10, about 25% more. In exchange, mPPE GF10 is the more ductile: elongation 6% versus 4% for mPPE GF20. MPPE GF10 is lighter (1.14 g/cm³ vs 1.21 g/cm³ for mPPE GF20) and mPPE GF20 is stiffer (5.5 GPa vs 3.7 GPa). On the shop floor, mPPE GF10 machines more easily (good vs fair).
mPPE GF10Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
mPPE GF20Choose it when strength drives the design.
mPPE GF10 vs mPPE 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
Flexural Strength
Flexural Modulus
Izod Impact, Notched
Same in both: Shear Modulus 0.9 GPa0.13 Msi · Bulk Modulus 3 GPa0.49 Msi · Poisson's Ratio 0.38 · Yield Strength (0.2% offset) 58 MPa8.4 ksi · Compressive Strength 90 MPa13.1 ksi · Compressive Modulus 2.3 GPa0.33 Msi · Shear Strength 50 MPa7.3 ksi · Fracture Toughness (K_IC) 3 MPa·√m2.7 ksi·√in · Hardness, Rockwell M 78 HRM · Hardness, Rockwell R 119 HRR
Physical
Density and transition temperatures.
Density
Same in both: Glass Transition (Tg) 145°C293 °F · Water Absorption (24 h) 0.07% · Water Absorption (Saturation) 0.6%
Thermal
How each material carries heat and how hot it can run.
Thermal Expansion (CTE, 20–100 °C)
Heat Deflection Temp. @ 1.8 MPa
Same in both: Thermal Conductivity 0.22 W/m·K0.13 BTU/hr·ft·°F · Specific Heat Capacity 1,400 J/kg·K0.33 BTU/lb·°F · Max Service Temperature (continuous) 100°C212 °F · Min Service Temperature -40°C-40 °F · Heat Deflection Temp. @ 0.45 MPa 138°C280 °F · Vicat Softening Point (B50) 140°C284 °F · Limiting Oxygen Index 25% · Max Service Temperature (short-term) 130°C266 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Resistivity 1×10¹⁴ Ω·m3.94×10²¹ µΩ·in · 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).
Same in both: Corrosion Resistance 80 / 100 · UV / Weathering Resistance 35 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Mold Shrinkage
Same in both: Weldability 65 / 100 · Formability (cold) 30 / 100 · Polishability 60 / 100 · Melt Flow Rate 6 g/10 min · Processing Melt Temperature (typ.) 280°C536 °F · 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 GF10 vs mPPE GF20 — frequently asked
Is mPPE GF20 stronger than mPPE GF10?
Yes. mPPE GF20 has a typical tensile strength of 95 MPa (13.8 ksi) against 76 MPa (11 ksi) for mPPE GF10 — about 25% more.
Which grade does FabDigit quote by default, GF10 or GF20?
UNF is the default mPPE condition in the FabDigit quote flow (neither GF10 nor GF20). 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 GF10 or mPPE GF20?
mPPE GF10. Its machinability rates good (65/100) against fair (50/100) for mPPE GF20.
Ready to make it?
Upload a CAD file and FabDigit prices the part in mPPE GF10 and mPPE 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.