MPR vs TPC (COPE/TPEE)
Polymer · grade comparison
MPR and TPC (COPE/TPEE) are both polymer grades. TPC (COPE/TPEE) is the stronger of the two: tensile strength 40 MPa (5.8 ksi) against 9 MPa (1.23 ksi) for MPR, about 4.7 times as much. TPC (COPE/TPEE) is the more ductile: elongation 500% versus 300% for MPR, and TPC (COPE/TPEE) is harder (55 Shore D vs 24 Shore D). TPC (COPE/TPEE) is stiffer (0.2 GPa vs 0.01 GPa).
TPC (COPE/TPEE)Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
MPR vs TPC (COPE/TPEE): 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)
Elongation at Break
Flexural Modulus
Hardness, Shore A
Hardness, Shore D
Tear Strength
Compression Set (22 h, 70 °C)
Shear Modulus
Yield Strength (0.2% offset)
Izod Impact, Notched
Physical
Density and transition temperatures.
Glass Transition (Tg)
Melting Temperature (Tm)
Water Absorption (Saturation)
Same in both: Density 1.2 g/cm³0.04 lb/in³ · Water Absorption (24 h) 0.6%
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Min Service Temperature
Limiting Oxygen Index
Max Service Temperature (short-term)
Heat Deflection Temp. @ 0.45 MPa
Heat Deflection Temp. @ 1.8 MPa
Vicat Softening Point (B50)
Same in both: Max Service Temperature (continuous) 120°C248 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Dielectric Strength
Dielectric Constant (1 MHz)
Volume Resistivity
Dissipation Factor (1 MHz)
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.
Weldability
Mold Shrinkage
Processing Melt Temperature (typ.)
Mold Temperature (typ.)
Polishability
Melt Flow Rate
Same in both: Machinability 30 / 100 · Formability (cold) 85 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Typical Recycled Content
Embodied Water
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Thermal Shock Resistance Index
Same in both: Thermal Diffusivity 0.1 mm²/s
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 | MPR | TPC (COPE/TPEE) |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$ Premium | $$$ Premium |
| Min. machined wall | — | — |
| Best machined surface | — | — |
MPR vs TPC (COPE/TPEE) — frequently asked
Is TPC (COPE/TPEE) stronger than MPR?
Yes. TPC (COPE/TPEE) has a typical tensile strength of 40 MPa (5.8 ksi) against 9 MPa (1.23 ksi) for MPR — about 4.7 times as much.
Which is cheaper, MPR or TPC (COPE/TPEE)?
Both sit in the same relative cost tier ($$$, premium); the part price will be decided by machining time, tolerance and quantity rather than by the material.
When should I choose MPR over TPC (COPE/TPEE)?
Pick TPC (COPE/TPEE) when strength drives the design, or when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in MPR and TPC (COPE/TPEE) 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.