Expanded polyethylene terephthalate (E-PET) beads give you the shear and compression strength a structural core needs, a shape that survives 168 hours at 180°C, and a V-0 flame grade — from resin that can be up to 100% recycled PET. If your program carries both a stiffness target and a recycled-content target, this is the one material here that answers both at once.
Current material data (confirm against the selected grade before ordering)
| Property | Current value |
|---|---|
| Molded density | 150–300 kg/m³ |
| Compression stress at 10% | 1000–3800 kPa |
| Long-term service temperature | 110 °C |
| Short-term dimensional stability temperature | 180 °C |
| Cold-use boundary | −40 °C |
| Thermal conductivity | 0.038–0.059 W/(m·K) |
| Rebound | 20–35% |
| Hardness | 90–98 Asker-C |
| Property | Value |
|---|---|
| Molded density | 150 / 200 / 300 kg/m³ |
| Compression strength @5% | 0.9–3.0 MPa |
| Dimensional stability | 180°C × 168 h — change within ±1% |
| Long-term service temperature | about 110°C |
| Flame rating | Standard grade UL 94 V-2 (5 mm); high-FR grade UL 94 V-0 (11 mm) |
| Chemical resistance | Resists oil, acid, alkali and solvents, per the resin supplier |
| Thermal conductivity | 0.038–0.059 W/(m·K) |
| Recycled and bio content | BIO grade 25% biomass; RNW grade uses recycled resin; core material up to 100% recycled PET |
| Tensile / elongation / tear / compression set / water absorption / hardness | Provided with your enquiry |
Rail vehicle sandwich cores
Stiffness per unit weight, with a fire grade to match.
Wind-blade and building sandwich cores
Low resin uptake keeps the lay-up weight down.
Recycled-content lightweighting programs
A stiffness target and a recycled target in one material.
Why we can run it
A heat-resistant polyester bead foam. DBM molds it. The figures above are for bead-molded parts.