EPS
polymerExpanded polystyrene (EPS) is a lightweight, closed-cell thermoplastic foam derived from polystyrene resin, typically produced by steam-expanding polystyrene beads and molding them into rigid blocks or shaped components. EPS is widely used in building insulation, protective packaging, and thermal management applications where low density, excellent insulating properties, and cost-effectiveness are priorities. Engineers select EPS for applications requiring thermal resistance in moderate-temperature environments, though its brittleness and limited mechanical strength restrict use in load-bearing roles; it is often replaced by polyurethane foam or mineral wool where higher performance or fire resistance is needed.
thermal building insulationprotective packagingflotation devicescold-chain logisticslightweight structural corescushioning and vibration damping
Compliance & Regulations
?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Strength(σc) | — | ksi | — | — | |
Flexural Strength (MOR)(σf) | — | ksi | — | — | |
Ultimate Tensile Strength(σUTS) | — | ksi | — | — | |
Young's Modulus(E) | — | ksi | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | — | °F | — | — | |
Melting Point / Solidus(Tm) | — | °F | — | — | |
Maximum Service Temperature(Tmax) | — | °F | — | — | |
Thermal Conductivity(k) | — | BTU/(hr·ft·°F) | — | — |
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
Safety & Biocompatibility
RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.