Al2TiO5 vs Spinel
Ceramic · grade comparison
Al2TiO5 and Spinel are both ceramic grades. Spinel is the stronger of the two: tensile strength 120 MPa (17.4 ksi) against 15 MPa (2.18 ksi) for Al2TiO5, about 8.0 times as much. Spinel is harder — 1,350 HV against 450 HV for Al2TiO5 — which matters for wear surfaces and threads. Al2TiO5 is lighter (3.2 g/cm³ vs 3.55 g/cm³ for Spinel) and Spinel is stiffer (265 GPa vs 15 GPa). On the shop floor, Al2TiO5 machines more easily (poor vs not recommended).
Al2TiO5Choose it when weight is the constraint, or when the part is machined in volume.
SpinelChoose it when strength drives the design, or when surface hardness matters.
Al2TiO5 vs Spinel: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all ceramic 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 ceramic 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.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Elongation at Break
Compressive Strength
Flexural Strength
Fracture Toughness (K_IC)
Hardness, Vickers
Hardness, Mohs
Hardness, Knoop
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Porosity
Refractive Index
Light Transmission
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.
Electrical Resistivity
Volume Resistivity
Dielectric Strength
Dielectric Constant (1 MHz)
Dissipation Factor (1 MHz)
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
Sintering / Firing Temperature
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Same in both: Embodied Water 200 L/kg24 gal/lb · Typical Recycled Content 0%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Thermal Diffusivity
Thermal Shock Resistance Index
Strength versus weight
Yield strength against density for every ceramic grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | Al2TiO5 | Spinel |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Al2TiO5 vs Spinel — frequently asked
Is Spinel stronger than Al2TiO5?
Yes. Spinel has a typical tensile strength of 120 MPa (17.4 ksi) against 15 MPa (2.18 ksi) for Al2TiO5 — about 8.0 times as much.
Which is cheaper, Al2TiO5 or Spinel?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, Al2TiO5 or Spinel?
Al2TiO5. Its machinability rates poor (25/100) against not recommended (5/100) for Spinel.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Al2TiO5 and Spinel 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.