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HfO2 vs TiO2 Ceramic

Ceramic · grade comparison

HfO2 and TiO2 Ceramic are both ceramic grades. TiO2 Ceramic is harder — 950 HV against 800 HV for HfO2 — which matters for wear surfaces and threads. TiO2 Ceramic is lighter (4.15 g/cm³ vs 9.5 g/cm³ for HfO2) and HfO2 runs hotter in service (2,200°C vs 1,100°C continuous).

HfO2Choose it when the part sees heat.

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

HfO2 vs TiO2 Ceramic: properties

HfO2TiO2 Ceramic

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

240 GPa34.8 Msi
250 GPa36.3 Msi

Bulk Modulus

195 GPa28.3 Msi
205 GPa29.7 Msi

Poisson's Ratio

0.28
0.27

Compressive Strength

1,200 MPa174 ksi
750 MPa109 ksi

Flexural Strength

150 MPa21.8 ksi
140 MPa20.3 ksi

Fracture Toughness (K_IC)

1.8 MPa·√m1.6 ksi·√in
2.5 MPa·√m2.3 ksi·√in

Hardness, Vickers

800 HV
950 HV

Hardness, Knoop

780 HK
880 HK

Hardness, Mohs

6.5
6.2

Tensile Strength (Ultimate)

—
80 MPa11.6 ksi

Same in both: Shear Modulus 95 GPa13.8 Msi

Physical

Density and transition temperatures.

Density

9.5 g/cm³0.34 lb/in³
4.15 g/cm³0.15 lb/in³

Melting Point (Solidus)

2,758°C4,996 °F
1,843°C3,349 °F

Refractive Index

2.1
2.7

Porosity

2%
1%

Thermal

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

Thermal Conductivity

1.7 W/m·K0.98 BTU/hr·ft·°F
7 W/m·K4 BTU/hr·ft·°F

Specific Heat Capacity

285 J/kg·K0.07 BTU/lb·°F
690 J/kg·K0.16 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

5.8 µm/m·K3.2 µin/in·°F
8 µm/m·K4.4 µin/in·°F

Max Service Temperature (continuous)

2,200°C3,992 °F
1,100°C2,012 °F

Min Service Temperature

-269°C-452 °F
-200°C-328 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

1×10¹⁰ Ω·m3.94×10¹⁷ µΩ·in
1×10¹¹ Ω·m3.94×10¹⁸ µΩ·in

Dielectric Strength

20 kV/mm508 V/mil
10 kV/mm254 V/mil

Dielectric Constant (1 MHz)

22
95

Dissipation Factor (1 MHz)

0.002
8×10⁻⁴

Volume Resistivity

1×10¹² Ω·cm
1×10¹³ Ω·cm

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

92 / 100
90 / 100

Manufacturability

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

Machinability

8 / 100
5 / 100

Sintering / Firing Temperature

1,750°C3,182 °F
1,400°C2,552 °F

Same in both: Polishability 80 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

700 MJ/kg300,946 BTU/lb
80 MJ/kg34,394 BTU/lb

Embodied Carbon (primary production)

45 kg CO₂/kg
6 kg CO₂/kg

Embodied Water

—
200 L/kg24 gal/lb

Typical Recycled Content

—
0%

Common Calculations

Ratios derived from the values above.

Specific Stiffness (E / density)

25.3 MN·m/kg
60.2 MN·m/kg

Thermal Diffusivity

0.6 mm²/s
2.4 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

CapabilityHfO2TiO2 Ceramic
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

HfO2 vs TiO2 Ceramic — frequently asked

What is the difference between HfO2 and TiO2 Ceramic?

HfO2 and TiO2 Ceramic are both ceramic grades. TiO2 Ceramic is harder — 950 HV against 800 HV for HfO2 — which matters for wear surfaces and threads. TiO2 Ceramic is lighter (4.15 g/cm³ vs 9.5 g/cm³ for HfO2) and HfO2 runs hotter in service (2,200°C vs 1,100°C continuous).

Which is cheaper, HfO2 or TiO2 Ceramic?

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.

When should I choose HfO2 over TiO2 Ceramic?

Pick HfO2 when the part sees heat. Pick TiO2 Ceramic when surface hardness matters, or when weight is the constraint.

Ready to make it?

Upload a CAD file and FabDigit prices the part in HfO2 and TiO2 Ceramic 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.