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TiO2 Ceramic vs Y2O3

Ceramic · grade comparison

TiO2 Ceramic and Y2O3 are both ceramic grades. TiO2 Ceramic is harder — 950 HV against 700 HV for Y2O3 — which matters for wear surfaces and threads. TiO2 Ceramic is lighter (4.15 g/cm³ vs 5.01 g/cm³ for Y2O3) and TiO2 Ceramic is stiffer (250 GPa vs 165 GPa). On the shop floor, Y2O3 sits in a lower cost tier (premium, $$$) than TiO2 Ceramic (high, $$$$).

TiO2 CeramicChoose it when surface hardness matters, or when weight is the constraint.

Y2O3Choose it when the part sees heat, or when cost is the deciding factor.

TiO2 Ceramic vs Y2O3: properties

TiO2 CeramicY2O3

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

250 GPa36.3 Msi
165 GPa23.9 Msi

Shear Modulus

95 GPa13.8 Msi
66 GPa9.6 Msi

Bulk Modulus

205 GPa29.7 Msi
148 GPa21.5 Msi

Poisson's Ratio

0.27
0.3

Tensile Strength (Ultimate)

80 MPa11.6 ksi
—

Compressive Strength

750 MPa109 ksi
700 MPa102 ksi

Fracture Toughness (K_IC)

2.5 MPa·√m2.3 ksi·√in
1.1 MPa·√m1 ksi·√in

Hardness, Vickers

950 HV
700 HV

Hardness, Knoop

880 HK
720 HK

Hardness, Mohs

6.2
6.5

Same in both: Flexural Strength 140 MPa20.3 ksi

Physical

Density and transition temperatures.

Density

4.15 g/cm³0.15 lb/in³
5.01 g/cm³0.18 lb/in³

Melting Point (Solidus)

1,843°C3,349 °F
2,425°C4,397 °F

Refractive Index

2.7
1.93

Porosity

1%
0.5%

Light Transmission

—
0%

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

7 W/m·K4 BTU/hr·ft·°F
13 W/m·K7.5 BTU/hr·ft·°F

Specific Heat Capacity

690 J/kg·K0.16 BTU/lb·°F
440 J/kg·K0.11 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

8 µm/m·K4.4 µin/in·°F
7.6 µm/m·K4.2 µin/in·°F

Max Service Temperature (continuous)

1,100°C2,012 °F
2,000°C3,632 °F

Min Service Temperature

-200°C-328 °F
-269°C-452 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

1×10¹¹ Ω·m3.94×10¹⁸ µΩ·in
1×10¹² Ω·m3.94×10¹⁹ µΩ·in

Dielectric Strength

10 kV/mm254 V/mil
12 kV/mm305 V/mil

Dielectric Constant (1 MHz)

95
11.5

Dissipation Factor (1 MHz)

8×10⁻⁴
5×10⁻⁴

Volume Resistivity

1×10¹³ Ω·cm
1×10¹⁴ Ω·cm

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

90 / 100
92 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

5 / 100
6 / 100

Polishability

80 / 100
85 / 100

Sintering / Firing Temperature

1,400°C2,552 °F
1,700°C3,092 °F

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

80 MJ/kg34,394 BTU/lb
280 MJ/kg120,378 BTU/lb

Embodied Carbon (primary production)

6 kg CO₂/kg
22 kg CO₂/kg

Embodied Water

200 L/kg24 gal/lb
900 L/kg108 gal/lb

Typical Recycled Content

0%
5%

Common Calculations

Ratios derived from the values above.

Specific Stiffness (E / density)

60.2 MN·m/kg
32.9 MN·m/kg

Thermal Diffusivity

2.4 mm²/s
5.9 mm²/s

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.

501002005001,000234567Density (g/cm³)Yield strength (MPa) — log scale

Manufacturing and finishing

CapabilityTiO2 CeramicY2O3
Default condition——
Relative cost$$$$ High$$$ Premium
Min. machined wall——
Best machined surface——

TiO2 Ceramic vs Y2O3 — frequently asked

What is the difference between TiO2 Ceramic and Y2O3?

TiO2 Ceramic and Y2O3 are both ceramic grades. TiO2 Ceramic is harder — 950 HV against 700 HV for Y2O3 — which matters for wear surfaces and threads. TiO2 Ceramic is lighter (4.15 g/cm³ vs 5.01 g/cm³ for Y2O3) and TiO2 Ceramic is stiffer (250 GPa vs 165 GPa).

Which is cheaper, TiO2 Ceramic or Y2O3?

Y2O3 is the lower-cost material: it sits in the premium tier ($$$) while TiO2 Ceramic is high ($$$$). 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 TiO2 Ceramic over Y2O3?

Pick TiO2 Ceramic when surface hardness matters, or when weight is the constraint. Pick Y2O3 when the part sees heat, or when cost is the deciding factor.

Ready to make it?

Upload a CAD file and FabDigit prices the part in TiO2 Ceramic and Y2O3 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.