Current material data (confirm against the selected grade before ordering)

Property	Current value
Molded density	16–33 kg/m³
Compression stress at 10%	90–160 kPa
Long-term service temperature	80 °C
Short-term dimensional stability temperature	100 °C
Cold-use boundary	−50 °C
Thermal conductivity	0.037–0.039 W/(m·K)
Rebound	25–40%
Hardness	55–70 Asker-C

01EPO foam molding

Molded EPO
stiff and impact-safe.

A steam-molded polystyrene/polyolefin composite bead foam: it holds its shape like a rigid foam but still takes impact like a cushioning one. Choose EPO when your part needs firm support at very low density (16 to 33 kg/m³) plus low thermal conductivity in the same wall. The material meets the 80°C automotive evaluation basis.

Firm support Impact resistant 16–33 kg/m³ Low thermal conductivity 80°C automotive evaluation

Strength by expansion ratio kPa · JIS K 6767 / A 9511

Density kg/m³ · JIS K 6767

30×33

50×20

60×16

Property comparison· click a grade to highlight

Property	30× · 33 kg/m³	50× · 20 kg/m³	60× · 16 kg/m³	Test method
Expansion ratio	30×	50×	60×	—
Density (kg/m³)	33	20	16	JIS K 6767
Compression stress (kPa)				JIS K 6767
@ 10% strain	160	120	90
@ 25% strain	190	150	120
Flexural strength (kPa)	370	340	260	JIS A 9511
Tensile strength (MPa)	0.53	0.38	0.28	ISO 1798
Elongation at break (%)	8.2	9.7	7.6	ISO 1798
Compression set (%)	14.1	15.4	15.0	JIS K 6767
Thermal conductivity @20°C (W/(m·K))	0.037	0.038	0.039	JIS A 1412
Falling-ball impact value (cm)	35.5	46.0	35.0	JIS K 7211
Heat resistance	Meets the 80°C automotive-industry evaluation basis			—

Grade selection guide

G.01Best for

Rigid support · heavier parts, edge & corner protection

30× · 33 kg/m³190 kPa @25% · Flexural strength 370 kPa

Highest stiffness and flexural strength of the three.

G.02Best for

General protective packaging · best impact absorption

50× · 20 kg/m³150 kPa @25% · Falling-ball impact value 46.0 cm

Highest falling-ball impact value at a lower density.

G.03Best for

Maximum weight saving · bulk filling and basic protection

60× · 16 kg/m³120 kPa @25% · 0.039 W/(m·K)

Lightest option; still 120 kPa at 25% strain.

02Compare

Which foam
fits your part?

The table below summarises the key properties of these foams for comparison. Tell us the load, temperature and handling your part sees, and DBM will confirm 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 kg/m³	20–74 kg/m³	30–50 kg/m³
Compression stress @25%	80–395 kPa	120–190 kPa	60.7–296.5 kPa	39–50 kPa
Tensile strength	420–1350 kPa	280–530 kPa	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 about 100°C	80°C automotive evaluation	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

Compare in detail: EPP vs EPO foam

Tell us what the part
has to survive.

Send an inquiry→ All materials

Molded EPO stiff and impact-safe.

Which foam fits your part?

Tell us what the part has to survive.

Molded EPO
stiff and impact-safe.

Which foam
fits your part?

Tell us what the part
has to survive.