EPS 80 vs JIS A9511 EPS
Polymer · grade comparison
EPS 80 and JIS A9511 EPS are both polymer grades. EPS 80 is the stronger of the two: tensile strength 0.22 MPa (0.0319 ksi) against 0.2 MPa (0.029 ksi) for JIS A9511 EPS, about 10% more. EPS 80 is the more ductile: elongation 2% versus 1.5% for JIS A9511 EPS. EPS 80 is lighter (0.02 g/cm³ vs 0.02 g/cm³ for JIS A9511 EPS) and JIS A9511 EPS is stiffer (0.01 GPa vs 0 GPa).
EPS 80Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
EPS 80 vs JIS A9511 EPS: 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
Tensile Strength (Ultimate)
Elongation at Break
Compressive Strength
Compressive Modulus
Shear Strength
Yield Strength (0.2% offset)
Flexural Modulus
Compression Set (22 h, 70 °C)
Same in both: Poisson's Ratio 0.1 · Flexural Strength 0.15 MPa0.02 ksi
Physical
Density and transition temperatures.
Density
Water Absorption (24 h)
Water Absorption (Saturation)
Same in both: Glass Transition (Tg) 100°C212 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Max Service Temperature (continuous)
Min Service Temperature
Limiting Oxygen Index
Max Service Temperature (short-term)
Vicat Softening Point (B50)
Same in both: Thermal Expansion (CTE, 20–100 °C) 65 µm/m·K36.1 µin/in·°F
Electrical
Conductivity and insulation.
Volume Resistivity
Electrical Resistivity
Same in both: Dielectric Constant (1 MHz) 1.04 · Dissipation Factor (1 MHz) 2×10⁻⁴
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
UV / Weathering Resistance
Same in both: Corrosion Resistance 80 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Weldability
Formability (cold)
Polishability
Mold Shrinkage
Mold Temperature (typ.)
Same in both: Machinability 90 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 5%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
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 | EPS 80 | JIS A9511 EPS |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$ Standard | $$ Standard |
| Min. machined wall | — | — |
| Best machined surface | — | — |
EPS 80 vs JIS A9511 EPS — frequently asked
Is EPS 80 stronger than JIS A9511 EPS?
Yes. EPS 80 has a typical tensile strength of 0.22 MPa (0.0319 ksi) against 0.2 MPa (0.029 ksi) for JIS A9511 EPS — about 10% more.
Which is cheaper, EPS 80 or JIS A9511 EPS?
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 welds better, EPS 80 or JIS A9511 EPS?
JIS A9511 EPS. Its weldability rates poor (30/100) against poor (25/100) for EPS 80.
Ready to make it?
Upload a CAD file and FabDigit prices the part in EPS 80 and JIS A9511 EPS 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.