PP-GF30 vs TPO
Polymer · grade comparison
PP-GF30 and TPO are both polymer grades. PP-GF30 is the stronger of the two: yield strength 85 MPa (12.3 ksi) against 12 MPa (1.74 ksi) for TPO, about 7.1 times as much; tensile strength follows at 85 MPa (12.3 ksi) vs 15 MPa (2.18 ksi). In exchange, TPO is the more ductile: elongation 400% versus 3% for PP-GF30, and PP-GF30 is harder (80 Shore D vs 45 Shore D). TPO is lighter (0.89 g/cm³ vs 1.13 g/cm³ for PP-GF30) and PP-GF30 is stiffer (6 GPa vs 0.6 GPa). On the shop floor, TPO welds better (very good vs fair).
PP-GF30Choose it when strength drives the design, or when the part sees heat.
TPOChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
PP-GF30 vs TPO: 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
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Compressive Modulus
Flexural Strength
Flexural Modulus
Shear Strength
Izod Impact, Notched
Hardness, Shore D
Hardness, Rockwell R
Shear Modulus
Hardness, Shore A
Tear Strength
Compression Set (22 h, 70 °C)
Physical
Density and transition temperatures.
Density
Melting Temperature (Tm)
Glass Transition (Tg)
Water Absorption (24 h)
Water Absorption (Saturation)
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Min Service Temperature
Heat Deflection Temp. @ 0.45 MPa
Heat Deflection Temp. @ 1.8 MPa
Vicat Softening Point (B50)
Limiting Oxygen Index
Max Service Temperature (short-term)
Electrical
Conductivity and insulation.
Dielectric Strength
Dielectric Constant (1 MHz)
Dissipation Factor (1 MHz)
Same in both: Electrical Resistivity 1×10¹⁴ Ω·m3.94×10²¹ µΩ·in · Volume Resistivity 1×10¹⁶ Ω·cm · Surface Resistivity 1×10¹⁵ Ω · Comparative Tracking Index (CTI) 600 V
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
UV / Weathering Resistance
Same in both: Corrosion Resistance 90 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Mold Shrinkage
Melt Flow Rate
Processing Melt Temperature (typ.)
Mold Temperature (typ.)
Same in both: Polishability 25 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Same in both: 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 | PP-GF30 | TPO |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$ Standard | $$ Standard |
| Min. machined wall | — | — |
| Best machined surface | — | — |
PP-GF30 vs TPO — frequently asked
Is PP-GF30 stronger than TPO?
Yes. PP-GF30 has a typical yield strength of 85 MPa (12.3 ksi) against 12 MPa (1.74 ksi) for TPO — about 7.1 times as much. Tensile strength is 85 MPa (12.3 ksi) vs 15 MPa (2.18 ksi).
Which is cheaper, PP-GF30 or TPO?
Both sit in the same relative cost tier ($$, standard); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, PP-GF30 or TPO?
TPO, by a small margin. Both rate fair for machinability — 50/100 against 45/100 for PP-GF30; for welding the order is TPO first (very good, 80/100) then PP-GF30 (fair, 45/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in PP-GF30 and TPO 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.