Current comparison data (confirm against the selected grade before order)
| Property | Current value |
|---|---|
| Molded density | 20–74 kg/m3 |
| Compression at 10% | 44.8–241.3 kPa |
| Long-term service temperature | 80 C |
| Short-term dimensional temperature | 100 C |
| Cold-use boundary | −70 C |
| Thermal conductivity | 0.0346–0.0433 W/(m.K) |
| Rebound | 50 % |
| Hardness | 25–55 Asker-C |
Bead-molded polyethylene foam — not extruded EPE sheet or solid LDPE. Pick PE when your part has to flex, be handled repeatedly, live around moisture, or when you want to dial in stiffness precisely: seven densities from 20 to 74 g/L cover soft cushioning right through to firm load-bearing.
Property comparison· click a density to highlight
| Property | 20 | 24 | 30 | 37 | 45 | 67 | 74 | Method |
|---|---|---|---|---|---|---|---|---|
| Density (g/L) | 20 | 24 | 30 | 37 | 45 | 67 | 74 | D3575 |
| Compression strength (kPa) | D3575 | |||||||
| @ 10% | 44.8 | 55.2 | 70.3 | 91.0 | 115.8 | 202.7 | 241.3 | |
| @ 25% | 60.7 | 71.0 | 88.3 | 113.8 | 142.7 | 246.1 | 296.5 | |
| @ 50% | 114.5 | 126.9 | 151.7 | 190.3 | 231.0 | 386.1 | 482.6 | |
| @ 75% | 293.0 | 328.2 | 383.3 | 443.3 | 519.9 | 779.1 | 896.3 | |
| Tensile strength (kPa) | 275.8 | 310.3 | 358.5 | 427.5 | 482.6 | 675.7 | 827.4 | D3575 |
| Elongation (%) | 38 | 35 | 32 | 31 | 30 | 22 | 22 | D3575 |
| Tear strength (kN/m) | 2.45 | 2.80 | 2.98 | 3.33 | 3.68 | 4.90 | 5.95 | D3575 |
| Compression set @25% (%) | 3 | 4 | 4 | 4 | 4 | 7 | 7 | D3575 |
| Compression set @50% (%) | 14 | 13 | 12 | 12 | 12 | 15 | 15 | D3575 |
| Thermal conductivity (W/m·K) | 0.0375 | 0.0346 | 0.0346 | 0.0346 | 0.0346 | 0.0404 | 0.0433 | C177 |
| Max service temp (°C) | 80 | 80 | 80 | 80 | 80 | 80 | 80 | D3575 |
| Water absorption (vol.%) | <5 | <5 | <5 | <5 | <5 | <5 | <5 | D3575/C272 |
| FMVSS 302 burn test | Pass, all densities | FMVSS 302 | ||||||
| Acid / alkali / solvent, 1 h contact | Pass, all densities | — | ||||||
Density selection guide
Soft surface protection · scratch-free interleaving
20–24 g/L60.7–71.0 kPa @25%Softest, highest elongation — kindest to finished surfaces.
Returnable packaging & line-side trays
30–37 g/L88.3–113.8 kPa @25%The everyday choice: low set after repeated cycles.
Heavier parts · stacked loads
45 g/L142.7 kPa @25%More support without losing flexibility.
Load-bearing inserts & high-impact zones
67–74 g/L246–296 kPa @25% · 5.95 kN/m tearFirmest and hardest to tear.
The table below puts the key properties of these materials side by side. Tell us the load, temperature and handling your part sees, and DBM will settle the material and density with you.
| Property | EPP | EPO | Beaded EPE | EVA |
|---|---|---|---|---|
| Structure | Molded PP bead foam | PS/polyolefin composite bead foam | Molded PE bead foam | Cross-linked closed-cell EVA |
| Density range | 20–66 kg/m³ | 16–33 g/L | 20–74 g/L | 30–50 g/L |
| Compression stress @25% | 80–395 kPa | 120–190 kPa | 60.7–296.5 kPa | 39–50 kPa |
| Tensile strength | 420–1350 kPa | 0.28–0.53 MPa | 275.8–827.4 kPa | 520–749 kPa |
| Elongation at break | ≥15% | 7.6–9.7% | 22–38% | 205–243% |
| Thermal conductivity | ≈0.036–0.042 W/(m·K) | 0.037–0.039 W/(m·K) | 0.0346–0.0433 W/(m·K) | 0.04 W/(m·K) |
| Service temperature | ≈ up to 100°C | 80°C automotive evaluation¹ | max 80°C | max 65°C recommended |
| Water absorption | ≤8% | on request | <5 vol.% | <1% |
| Character | Tough, repeat-impact, reusable — the workhorse | Stiffer support with impact resistance | Flexible, water-resistant, widest density span | Soft, high elongation, conforms and rebounds |