3C90 vs Aluminum Nitride
Ceramic · grade comparison
3C90 and Aluminum Nitride are both ceramic grades. Aluminum Nitride is the stronger of the two: tensile strength 200 MPa (29 ksi) against 30 MPa (4.35 ksi) for 3C90, about 6.7 times as much. Aluminum Nitride is harder — 1,100 HV against 600 HV for 3C90 — which matters for wear surfaces and threads. Aluminum Nitride is lighter (3.29 g/cm³ vs 4.8 g/cm³ for 3C90) and Aluminum Nitride is stiffer (320 GPa vs 150 GPa). On the shop floor, 3C90 sits in a lower cost tier (premium, $$$) than Aluminum Nitride (high, $$$$).
3C90Choose it when cost is the deciding factor.
Aluminum NitrideChoose it when strength drives the design, or when surface hardness matters.
3C90 vs Aluminum Nitride: 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
Poisson's Ratio
Tensile Strength (Ultimate)
Compressive Strength
Flexural Strength
Fracture Toughness (K_IC)
Hardness, Vickers
Hardness, Mohs
Shear Modulus
Bulk Modulus
Elongation at Break
Shear Strength
Hardness, Knoop
Physical
Density and transition temperatures.
Density
Porosity
Melting Point (Solidus)
Refractive Index
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.
Polishability
Sintering / Firing Temperature
Same in both: Machinability 5 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Typical Recycled Content
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 | 3C90 | Aluminum Nitride |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$ Premium | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
3C90 vs Aluminum Nitride — frequently asked
Is Aluminum Nitride stronger than 3C90?
Yes. Aluminum Nitride has a typical tensile strength of 200 MPa (29 ksi) against 30 MPa (4.35 ksi) for 3C90 — about 6.7 times as much.
Which is cheaper, 3C90 or Aluminum Nitride?
3C90 is the lower-cost material: it sits in the premium tier ($$$) while Aluminum Nitride 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 3C90 over Aluminum Nitride?
Pick 3C90 when cost is the deciding factor. Pick Aluminum Nitride when strength drives the design, or when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 3C90 and Aluminum Nitride 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.