EPS 150 vs EPS 200
Polymer · grade comparison
EPS 150 and EPS 200 are both polymer grades. EPS 200 is the stronger of the two: tensile strength 0.45 MPa (0.0653 ksi) against 0.3 MPa (0.0435 ksi) for EPS 150, about 50% more. EPS 200 is the more ductile: elongation 5% versus 2% for EPS 150. EPS 150 is lighter (0.03 g/cm³ vs 0.03 g/cm³ for EPS 200) and EPS 200 is stiffer (0.01 GPa vs 0.01 GPa). On the shop floor, EPS 150 welds better (fair vs poor).
EPS 150Choose it when weight is the constraint, or when it will be welded.
EPS 200Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
EPS 150 vs EPS 200: 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
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Compressive Modulus
Flexural Strength
Flexural Modulus
Shear Strength
Compression Set (22 h, 70 °C)
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.
Specific Heat Capacity
Vicat Softening Point (B50)
Same in both: Thermal Conductivity 0.03 W/m·K0.02 BTU/hr·ft·°F · Thermal Expansion (CTE, 20–100 °C) 65 µm/m·K36.1 µin/in·°F · Max Service Temperature (continuous) 80°C176 °F · Min Service Temperature -50°C-58 °F · Limiting Oxygen Index 25% · Max Service Temperature (short-term) 100°C212 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Dielectric Constant (1 MHz)
Volume Resistivity
Surface Resistivity
Same in both: Dissipation Factor (1 MHz) 3×10⁻⁴
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)
Mold Shrinkage
Processing Melt Temperature (typ.)
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)
Thermal Diffusivity
Same in both: Specific Stiffness (E / density) 0.3 MN·m/kg · 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 150 | EPS 200 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$ Standard | $$ Standard |
| Min. machined wall | — | — |
| Best machined surface | — | — |
EPS 150 vs EPS 200 — frequently asked
Is EPS 200 stronger than EPS 150?
Yes. EPS 200 has a typical tensile strength of 0.45 MPa (0.0653 ksi) against 0.3 MPa (0.0435 ksi) for EPS 150 — about 50% more.
Which is cheaper, EPS 150 or EPS 200?
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 150 or EPS 200?
EPS 150. Its weldability rates fair (40/100) against poor (30/100) for EPS 200.
Ready to make it?
Upload a CAD file and FabDigit prices the part in EPS 150 and EPS 200 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.