5056 Aluminum Honeycomb vs PMI Foam Core (Rohacell)
Composite · grade comparison
5056 Aluminum Honeycomb and PMI Foam Core (Rohacell) are both composite grades. 5056 Aluminum Honeycomb is the stronger of the two: tensile strength 4 MPa (0.624 ksi) against 2 MPa (0.319 ksi) for PMI Foam Core (Rohacell), about 95% more. 5056 Aluminum Honeycomb is lighter (0.05 g/cm³ vs 0.08 g/cm³ for PMI Foam Core (Rohacell)) and 5056 Aluminum Honeycomb is stiffer (1 GPa vs 0.09 GPa). On the shop floor, PMI Foam Core (Rohacell) machines more easily (excellent vs fair).
5056 Aluminum HoneycombChoose it when strength drives the design, or when weight is the constraint.
PMI Foam Core (Rohacell)Choose it when the part is machined in volume.
5056 Aluminum Honeycomb vs PMI Foam Core (Rohacell): propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all composite grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all composite grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
5056 Aluminum HoneycombPMI Foam Core (Rohacell)
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Compressive Strength
Compressive Modulus
Shear Strength
Poisson's Ratio
Elongation at Break
Physical
Density and transition temperatures.
Density
Glass Transition (Tg)
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Min Service Temperature
Max Service Temperature (short-term)
Electrical
Conductivity and insulation.
Electrical Resistivity
Dielectric Constant (1 MHz)
Dissipation Factor (1 MHz)
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
UV / Weathering Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Thermal Diffusivity
Same in both: Thermal Shock Resistance Index 0
Strength versus weight
Yield strength against density for every composite grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | 5056 Aluminum Honeycomb | PMI Foam Core (Rohacell) |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
5056 Aluminum Honeycomb vs PMI Foam Core (Rohacell) — frequently asked
Is 5056 Aluminum Honeycomb stronger than PMI Foam Core (Rohacell)?
Yes. 5056 Aluminum Honeycomb has a typical tensile strength of 4 MPa (0.624 ksi) against 2 MPa (0.319 ksi) for PMI Foam Core (Rohacell) — about 95% more.
Which is cheaper, 5056 Aluminum Honeycomb or PMI Foam Core (Rohacell)?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, 5056 Aluminum Honeycomb or PMI Foam Core (Rohacell)?
PMI Foam Core (Rohacell). Its machinability rates excellent (85/100) against fair (35/100) for 5056 Aluminum Honeycomb.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 5056 Aluminum Honeycomb and PMI Foam Core (Rohacell) side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.