Cork Composition (Cork-Rubber) vs Split Leather
Natural Material · grade comparison
Cork Composition (Cork-Rubber) and Split Leather are both natural material grades. Split Leather is the stronger of the two: tensile strength 12 MPa (1.74 ksi) against 2 MPa (0.305 ksi) for Cork Composition (Cork-Rubber), about 5.7 times as much. Split Leather is the more ductile: elongation 55% versus 12% for Cork Composition (Cork-Rubber). Cork Composition (Cork-Rubber) is lighter (0.75 g/cm³ vs 0.9 g/cm³ for Split Leather) and Split Leather is stiffer (0.1 GPa vs 0.03 GPa). On the shop floor, Cork Composition (Cork-Rubber) sits in a lower cost tier (premium, $$$) than Split Leather (high, $$$$).
Cork Composition (Cork-Rubber)Choose it when weight is the constraint, or when the part sees heat.
Split LeatherChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
Cork Composition (Cork-Rubber) vs Split Leather: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all natural material 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 natural material 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.
Cork Composition (Cork-Rubber)Split Leather
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Elongation at Break
Compressive Strength
Shear Strength
Physical
Density and transition temperatures.
Density
Porosity
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
Electrical
Conductivity and insulation.
Dielectric Strength
Same in both: Electrical Resistivity 1×10⁹ Ω·m3.94×10¹⁶ µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Polishability
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)
Same in both: Thermal Diffusivity 0.1 mm²/s
Strength versus weight
Yield strength against density for every natural material grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | Cork Composition (Cork-Rubber) | Split Leather |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$ Premium | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Cork Composition (Cork-Rubber) vs Split Leather — frequently asked
Is Split Leather stronger than Cork Composition (Cork-Rubber)?
Yes. Split Leather has a typical tensile strength of 12 MPa (1.74 ksi) against 2 MPa (0.305 ksi) for Cork Composition (Cork-Rubber) — about 5.7 times as much.
Which is cheaper, Cork Composition (Cork-Rubber) or Split Leather?
Cork Composition (Cork-Rubber) is the lower-cost material: it sits in the premium tier ($$$) while Split Leather is high ($$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
When should I choose Cork Composition (Cork-Rubber) over Split Leather?
Pick Cork Composition (Cork-Rubber) when weight is the constraint, or when the part sees heat. Pick Split Leather when strength drives the design, or when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Cork Composition (Cork-Rubber) and Split Leather 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.