Foamed nylon (expanded polyamide) beads carry loads no other foam on this site approaches, resist fuel, engine oil and lubricants, and hold their dimensions at 150°C. It is the material for a structural part in the engine bay — and the hardest one to foam. DBM molds it.
Current material data (confirm against the selected grade before ordering)
| Property | Current value |
|---|---|
| Molded density | 150–600 kg/m³ |
| Compression stress at 10% | 2200–8700 kPa |
| Long-term service temperature | 120 °C |
| Short-term dimensional stability temperature | 150 °C |
| Cold-use boundary | −40 °C |
| Thermal conductivity | 0.045–0.08 W/(m·K) |
| Rebound | 30–45% |
| Hardness | 92–99 Asker-C |
| Property | Value |
|---|---|
| Molded density | 150–600 kg/m³, adjustable |
| Compression strength | 0.4 MPa at 75 ±10 kg/m³ (research value); up to about 8.7 MPa at the top of the density range |
| Heat resistance | 150°C with a 100 g load for 2 h — 3% dimensional change; long-term about 120°C (heat-stabilised grade) |
| Chemical resistance | Excellent in contact with fuel, engine oil and lubricants, per the resin supplier |
| Thermal conductivity | 0.047 W/(m·K) |
| Foam structure | Isotropic — mechanical properties equal in every direction; closed cell gives crash-relevant compression strength |
| Base polymer | PA6 or PA66, supercritical foaming |
| Weather resistance | Amide bonds hydrolyse and absorb moisture — outdoors is the weak point of nylon; modifiable |
| Tensile / elongation / tear / water absorption / hardness | Provided with your enquiry |
Structural parts around the engine bay
Heat, oil and vibration in one place.
Heavy-industry vibration damping
Load capacity an order above the polyolefin foams.
Crash-relevant components
A closed-cell isotropic structure holds up in every direction.
Why we can run it
The hardest nylon beads to foam, and DBM molds them. We confirm your part's operating conditions before quoting.