mPP ESD vs mPP GF30
Polymer · mPP grade comparison
mPP ESD and mPP GF30 are two grades of the same polymer grade, mPP: ESD (antistatic / conductive) versus GF30 (30 % glass-fiber reinforced). The chemistry is identical, so every difference below comes from the condition. mPP GF30 is the stronger of the two: yield strength 33 MPa (4.79 ksi) against 27 MPa (3.92 ksi) for mPP ESD, about 22% more; tensile strength follows at 80 MPa (11.6 ksi) vs 28 MPa (4.06 ksi). In exchange, mPP ESD is the more ductile: elongation 15% versus 3% for mPP GF30, and mPP ESD is harder (72 Shore D vs 68 Shore D). MPP ESD is lighter (0.94 g/cm³ vs 1.13 g/cm³ for mPP GF30) and mPP GF30 is stiffer (6 GPa vs 1.8 GPa). On the shop floor, mPP GF30 machines more easily (good vs fair) and mPP ESD welds better (very good vs good).
mPP ESDChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
mPP GF30Choose it when strength drives the design, or when the part sees heat.
mPP ESD vs mPP 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Flexural Strength
Flexural Modulus
Shear Strength
Izod Impact, Notched
Hardness, Shore D
Hardness, Rockwell R
Same in both: Shear Modulus 0.45 GPa0.07 Msi · Bulk Modulus 4 GPa0.51 Msi · Poisson's Ratio 0.42 · Compressive Strength 40 MPa5.8 ksi · Compressive Modulus 1.3 GPa0.19 Msi
Physical
Density and transition temperatures.
Density
Light Transmission
Same in both: Melting Temperature (Tm) 152°C306 °F · Glass Transition (Tg) -5°C23 °F · Water Absorption (24 h) 0.01% · Water Absorption (Saturation) 0.03% · Refractive Index 1.49
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
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)
Limiting Oxygen Index
Same in both: Specific Heat Capacity 1,800 J/kg·K0.43 BTU/lb·°F · Min Service Temperature -20°C-4 °F · Max Service Temperature (short-term) 120°C248 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Volume Resistivity
Surface Resistivity
Same in both: Dielectric Strength 30 kV/mm762 V/mil · Dielectric Constant (1 MHz) 2.25 · Dissipation Factor (1 MHz) 3×10⁻⁴ · Comparative Tracking Index (CTI) 600 V
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: UV / Weathering Resistance 25 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Mold Shrinkage
Same in both: Polishability 50 / 100 · Melt Flow Rate 10 g/10 min · Processing Melt Temperature (typ.) 225°C437 °F · Mold Temperature (typ.) 30°C86 °F
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 78 MJ/kg33,534 BTU/lb · Embodied Carbon (primary production) 2 kg CO₂/kg · Embodied Water 60 L/kg7.2 gal/lb · 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.
mPP ESD vs mPP GF30 — frequently asked
Is mPP GF30 stronger than mPP ESD?
Yes. mPP GF30 has a typical yield strength of 33 MPa (4.79 ksi) against 27 MPa (3.92 ksi) for mPP ESD — about 22% more. Tensile strength is 80 MPa (11.6 ksi) vs 28 MPa (4.06 ksi).
Which grade does FabDigit quote by default, ESD or GF30?
UNF is the default mPP condition in the FabDigit quote flow (neither ESD nor GF30). 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, mPP ESD or mPP GF30?
mPP GF30. Its machinability rates good (55/100) against fair (45/100) for mPP ESD; for welding the order is mPP ESD first (very good, 80/100) then mPP GF30 (good, 60/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in mPP ESD and mPP 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.