FabDigit

ZrB2 vs TiB2 and 2 more: properties

ZrB2TiB2HfB2Silicon Carbide

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

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

Shear Modulus

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

Bulk Modulus

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

Poisson's Ratio

0.14
0.12
0.12
0.16

Tensile Strength (Ultimate)

280 MPa40.6 ksi
250 MPa36.3 ksi

Compressive Strength

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

Flexural Strength

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

Fracture Toughness (K_IC)

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

Hardness, Vickers

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

Hardness, Knoop

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

Hardness, Mohs

9
9
9
9.3

Physical

Density and transition temperatures.

Density

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

Melting Point (Solidus)

3,245°C5,873 °F
3,225°C5,837 °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

75 W/m·K43.3 BTU/hr·ft·°F
90 W/m·K52 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

430 J/kg·K0.1 BTU/lb·°F
640 J/kg·K0.15 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 µm/m·K3.3 µin/in·°F
6.6 µm/m·K3.7 µin/in·°F
5.8 µm/m·K3.2 µin/in·°F
4 µm/m·K2.2 µin/in·°F

Max Service Temperature (continuous)

1,200°C2,192 °F
900°C1,652 °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

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

Volume Resistivity

9.2×10⁻⁶ Ω·cm
2×10⁻⁵ 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

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

Polishability

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

Sintering / Firing Temperature

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

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

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

Embodied Carbon (primary production)

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

Embodied Water

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

Typical Recycled Content

0%
0%
0%
2%

Common Calculations

Ratios derived from the values above.

Specific Stiffness (E / density)

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

Thermal Diffusivity

28.6 mm²/s
31.3 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

CapabilityZrB2TiB2HfB2Silicon 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 ZrB2 and TiB2 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.