FabDigit

TiB2 vs ZrB2 and 2 more: properties

TiB2ZrB2HfB2Silicon Carbide

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

550 GPa79.8 Msi
489 GPa70.9 Msi
480 GPa69.6 Msi
410 GPa59.5 Msi

Shear Modulus

250 GPa36.3 Msi
213 GPa30.9 Msi
213 GPa30.9 Msi
175 GPa25.4 Msi

Bulk Modulus

240 GPa34.8 Msi
230 GPa33.4 Msi
212 GPa30.7 Msi
220 GPa31.9 Msi

Poisson's Ratio

0.12
0.14
0.12
0.16

Compressive Strength

3,000 MPa435 ksi
1,800 MPa261 ksi
1,800 MPa261 ksi
3,000 MPa435 ksi

Flexural Strength

400 MPa58 ksi
450 MPa65.3 ksi
380 MPa55.1 ksi
420 MPa60.9 ksi

Fracture Toughness (K_IC)

6 MPa·√m5.5 ksi·√in
3.5 MPa·√m3.2 ksi·√in
3.8 MPa·√m3.5 ksi·√in
3.5 MPa·√m3.2 ksi·√in

Hardness, Vickers

3,000 HV
2,200 HV
2,800 HV
2,500 HV

Hardness, Knoop

3,200 HK
1,800 HK
2,600 HK
2,600 HK

Hardness, Mohs

9
9
9
9.3

Tensile Strength (Ultimate)

280 MPa40.6 ksi
250 MPa36.3 ksi

Physical

Density and transition temperatures.

Density

4.5 g/cm³0.16 lb/in³
6.09 g/cm³0.22 lb/in³
11.1 g/cm³0.4 lb/in³
3.15 g/cm³0.11 lb/in³

Melting Point (Solidus)

3,225°C5,837 °F
3,245°C5,873 °F
3,380°C6,116 °F
2,730°C4,946 °F

Porosity

1%
1%
1.5%
0.3%

Refractive Index

2.65

Thermal

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

Thermal Conductivity

90 W/m·K52 BTU/hr·ft·°F
75 W/m·K43.3 BTU/hr·ft·°F
104 W/m·K60.1 BTU/hr·ft·°F
120 W/m·K69.3 BTU/hr·ft·°F

Specific Heat Capacity

640 J/kg·K0.15 BTU/lb·°F
430 J/kg·K0.1 BTU/lb·°F
245 J/kg·K0.06 BTU/lb·°F
700 J/kg·K0.17 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

6.6 µm/m·K3.7 µin/in·°F
6 µm/m·K3.3 µin/in·°F
5.8 µm/m·K3.2 µin/in·°F
4 µm/m·K2.2 µin/in·°F

Max Service Temperature (continuous)

900°C1,652 °F
1,200°C2,192 °F
1,100°C2,012 °F
1,600°C2,912 °F

Min Service Temperature

-200°C-328 °F
-200°C-328 °F
-250°C-418 °F
-200°C-328 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

2×10⁻⁷ Ω·m7.87 µΩ·in
9.2×10⁻⁸ Ω·m3.62 µΩ·in
1×10⁻⁷ Ω·m3.94 µΩ·in
10 Ω·m3.94×10⁸ µΩ·in

Volume Resistivity

2×10⁻⁵ Ω·cm
9.2×10⁻⁶ Ω·cm
1×10⁻⁵ Ω·cm
1,000 Ω·cm

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

70 / 100
70 / 100
70 / 100
92 / 100

Manufacturability

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

Machinability

6 / 100
8 / 100
5 / 100
3 / 100

Polishability

75 / 100
75 / 100
80 / 100
92 / 100

Sintering / Firing Temperature

1,900°C3,452 °F
1,950°C3,542 °F
2,100°C3,812 °F
2,100°C3,812 °F

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

350 MJ/kg150,473 BTU/lb
320 MJ/kg137,575 BTU/lb
1,500 MJ/kg644,885 BTU/lb
80 MJ/kg34,394 BTU/lb

Embodied Carbon (primary production)

25 kg CO₂/kg
28 kg CO₂/kg
110 kg CO₂/kg
5.5 kg CO₂/kg

Typical Recycled Content

0%
0%
0%
2%

Embodied Water

250 L/kg30 gal/lb
300 L/kg35.9 gal/lb

Common Calculations

Ratios derived from the values above.

Specific Stiffness (E / density)

122.2 MN·m/kg
80.3 MN·m/kg
43.2 MN·m/kg
130.2 MN·m/kg

Thermal Diffusivity

31.3 mm²/s
28.6 mm²/s
38.2 mm²/s
54.4 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 scaleSilicon Carbide

Manufacturing and finishing

CapabilityTiB2ZrB2HfB2Silicon Carbide
Default condition
Relative cost$$$$ High$$$$ High$$$$ High$$$$ High
Min. machined wall
Best machined surface

Ready to make it?

Upload a CAD file and FabDigit prices the part in TiB2 and ZrB2 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.