PE80 vs UHMW-PE
Polymer · grade comparison
PE80 and UHMW-PE are both polymer grades. UHMW-PE is the stronger of the two: tensile strength 40 MPa (5.8 ksi) against 30 MPa (4.35 ksi) for PE80, about 33% more. In exchange, PE80 is the more ductile: elongation 700% versus 350% for UHMW-PE, and UHMW-PE is harder (64 Shore D vs 60 Shore D). PE80 is stiffer (0.9 GPa vs 0.72 GPa) and UHMW-PE runs hotter in service (80°C vs 60°C continuous). On the shop floor, UHMW-PE machines more easily (very good vs good), PE80 welds better (excellent vs poor), and PE80 sits in a lower cost tier (budget, $) than UHMW-PE (standard, $$).
PE80Choose it when the part is bent, formed or impact-loaded, or when it will be welded.
UHMW-PEChoose it when strength drives the design, or when the part sees heat.
PE80 vs UHMW-PE: 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
Shear Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Elongation at Break
Flexural Modulus
Shear Strength
Izod Impact, Notched
Hardness, Shore D
Hardness, Rockwell R
Compressive Modulus
Fracture Toughness (K_IC)
Same in both: Yield Strength (0.2% offset) 21 MPa3 ksi · Compressive Strength 20 MPa2.9 ksi · Flexural Strength 25 MPa3.6 ksi
Physical
Density and transition temperatures.
Density
Melting Temperature (Tm)
Glass Transition (Tg)
Water Absorption (Saturation)
Refractive Index
Same in both: Water Absorption (24 h) 0.01%
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.
Electrical Resistivity
Dielectric Strength
Volume Resistivity
Surface Resistivity
Same in both: Dielectric Constant (1 MHz) 2.3 · Dissipation Factor (1 MHz) 3×10⁻⁴ · Comparative Tracking Index (CTI) 600 V
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
Same in both: Typical Recycled Content 0%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Same in both: Thermal Diffusivity 0.2 mm²/s · 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 | PE80 | UHMW-PE |
|---|---|---|
| CNC machining | — | Yes |
| Sheet metal | — | Yes |
| Injection molding | — | Yes |
| Default condition | — | FDA |
| Relative cost | $ Budget | $$ Standard |
| Min. machined wall | — | 0.5 mm |
| Best machined surface | — | Ra 0.8 µm |
| Chrome Plating (Plastic) | — | Yes |
| EMI Shielding Coating | — | Yes |
| Painting | — | Yes |
| Soft Touch Coating | — | Yes |
| Spray Painting | — | Yes |
| UV Coating | — | Yes |
PE80 vs UHMW-PE — frequently asked
Is UHMW-PE stronger than PE80?
Yes. UHMW-PE has a typical tensile strength of 40 MPa (5.8 ksi) against 30 MPa (4.35 ksi) for PE80 — about 33% more.
Which is cheaper, PE80 or UHMW-PE?
PE80 is the lower-cost material: it sits in the budget tier ($) while UHMW-PE is standard ($$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which is easier to machine, PE80 or UHMW-PE?
UHMW-PE. Its machinability rates very good (75/100) against good (58/100) for PE80; for welding the order is PE80 first (excellent, 95/100) then UHMW-PE (poor, 15/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in PE80 and UHMW-PE 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.