PP-H Formlabs Polypropylene vs PP-H GF20
Polymer · PP-H grade comparison
Formlabs Polypropylene Powder and PP-H GF20 are two grades of the same polymer grade, PP-H: Formlabs Polypropylene versus GF20 (20 % coupled glass-fiber reinforced PP homopolymer). The chemistry is identical, so every difference below comes from the condition. PP-H GF20 is the stronger of the two: tensile strength 75 MPa (10.9 ksi) against 29 MPa (4.21 ksi) for Formlabs Polypropylene Powder, about 159% more. In exchange, Formlabs Polypropylene Powder is the more ductile: elongation 34% versus 3% for PP-H GF20. PP-H GF20 is stiffer (5 GPa vs 1.64 GPa).
Formlabs Polypropylene PowderChoose it when the part is bent, formed or impact-loaded.
PP-H GF20Choose it when strength drives the design.
Formlabs Polypropylene Powder vs PP-H 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.
Formlabs Polypropylene PowderPP-H GF20
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Elastic (Young's) Modulus
Elongation at Break
Flexural Strength
Flexural Modulus
Izod Impact, Notched
Shear Modulus
Bulk Modulus
Poisson's Ratio
Yield Strength (0.2% offset)
Compressive Strength
Compressive Modulus
Shear Strength
Fracture Toughness (K_IC)
Hardness, Shore D
Hardness, Rockwell M
Hardness, Rockwell R
Physical
Density and transition temperatures.
Water Absorption (24 h)
Density
Melting Temperature (Tm)
Glass Transition (Tg)
Water Absorption (Saturation)
Refractive Index
Thermal
How each material carries heat and how hot it can run.
Heat Deflection Temp. @ 1.8 MPa
Heat Deflection Temp. @ 0.45 MPa
Vicat Softening Point (B50)
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Min Service Temperature
Limiting Oxygen Index
Max Service Temperature (short-term)
Electrical
Conductivity and insulation.
Electrical Resistivity
Dielectric Strength
Dielectric Constant (1 MHz)
Dissipation Factor (1 MHz)
Volume Resistivity
Surface Resistivity
Comparative Tracking Index (CTI)
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
UV / Weathering Resistance
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 Carbon (primary production)
Embodied Water
Typical Recycled Content
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.
Formlabs Polypropylene Powder vs PP-H GF20 — frequently asked
Is PP-H GF20 stronger than Formlabs Polypropylene Powder?
Yes. PP-H GF20 has a typical tensile strength of 75 MPa (10.9 ksi) against 29 MPa (4.21 ksi) for Formlabs Polypropylene Powder — about 159% more.
Which grade does FabDigit quote by default, Formlabs Polypropylene or GF20?
UNF is the default PP-H condition in the FabDigit quote flow (neither Formlabs Polypropylene 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.
When should I choose Formlabs Polypropylene Powder over PP-H GF20?
Pick Formlabs Polypropylene Powder when the part is bent, formed or impact-loaded. Pick PP-H GF20 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Formlabs Polypropylene Powder and PP-H 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.