FabDigit

NTC Ceramic vs Aluminum Nitride and 2 more: properties

NTC CeramicAluminum NitridePZTPZT-4

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

135 GPa19.6 Msi
320 GPa46.4 Msi
61 GPa8.8 Msi
70 GPa10.2 Msi

Shear Modulus

53 GPa7.7 Msi
128 GPa18.6 Msi
23 GPa3.3 Msi
26 GPa3.8 Msi

Bulk Modulus

105 GPa15.2 Msi
205 GPa29.7 Msi
55 GPa8 Msi
60 GPa8.7 Msi

Poisson's Ratio

0.28
0.24
0.31
0.31

Tensile Strength (Ultimate)

60 MPa8.7 ksi
200 MPa29 ksi
75 MPa10.9 ksi
75 MPa10.9 ksi

Elongation at Break

0%
0%
0.1%

Compressive Strength

650 MPa94.3 ksi
2,100 MPa305 ksi
600 MPa87 ksi
520 MPa75.4 ksi

Flexural Strength

110 MPa16 ksi
330 MPa47.9 ksi
85 MPa12.3 ksi
85 MPa12.3 ksi

Shear Strength

90 MPa13.1 ksi
200 MPa29 ksi
65 MPa9.4 ksi

Fracture Toughness (K_IC)

1.3 MPa·√m1.2 ksi·√in
3 MPa·√m2.7 ksi·√in
1 MPa·√m0.91 ksi·√in
1 MPa·√m0.91 ksi·√in

Hardness, Vickers

700 HV
1,100 HV
350 HV
320 HV

Hardness, Mohs

6
7.5
5
5

Hardness, Knoop

1,200 HK
330 HK
300 HK

Physical

Density and transition temperatures.

Density

5.1 g/cm³0.18 lb/in³
3.29 g/cm³0.12 lb/in³
7.75 g/cm³0.28 lb/in³
7.5 g/cm³0.27 lb/in³

Melting Point (Solidus)

1,500°C2,732 °F
2,200°C3,992 °F

Porosity

3%
0.5%
1%
1%

Refractive Index

2.15

Thermal

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

Thermal Conductivity

4 W/m·K2.3 BTU/hr·ft·°F
175 W/m·K101 BTU/hr·ft·°F
1.3 W/m·K0.75 BTU/hr·ft·°F
1.3 W/m·K0.72 BTU/hr·ft·°F

Specific Heat Capacity

700 J/kg·K0.17 BTU/lb·°F
740 J/kg·K0.18 BTU/lb·°F
380 J/kg·K0.09 BTU/lb·°F
350 J/kg·K0.08 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

8.5 µm/m·K4.7 µin/in·°F
4.5 µm/m·K2.5 µin/in·°F
4 µm/m·K2.2 µin/in·°F
4 µm/m·K2.2 µin/in·°F

Max Service Temperature (continuous)

150°C302 °F
1,000°C1,832 °F
175°C347 °F
160°C320 °F

Min Service Temperature

-55°C-67 °F
-269°C-452 °F
-50°C-58 °F
-50°C-58 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

100 Ω·m3.94×10⁹ µΩ·in
1×10¹² Ω·m3.94×10¹⁹ µΩ·in
1×10¹⁰ Ω·m3.94×10¹⁷ µΩ·in
1×10¹¹ Ω·m3.94×10¹⁸ µΩ·in

Volume Resistivity

10,000 Ω·cm
1×10¹⁴ Ω·cm
1×10¹² Ω·cm
1×10¹³ Ω·cm

Dielectric Strength

17 kV/mm432 V/mil
5 kV/mm127 V/mil
10 kV/mm254 V/mil

Dielectric Constant (1 MHz)

8.8
1,700
1,300

Dissipation Factor (1 MHz)

5×10⁻⁴
0.02
0.004

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

70 / 100
82 / 100
60 / 100
65 / 100

Manufacturability

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

Machinability

5 / 100
5 / 100
8 / 100
12 / 100

Polishability

60 / 100
80 / 100
70 / 100
70 / 100

Sintering / Firing Temperature

1,250°C2,282 °F
1,800°C3,272 °F
1,250°C2,282 °F
1,275°C2,327 °F

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

90 MJ/kg38,693 BTU/lb
250 MJ/kg107,481 BTU/lb
70 MJ/kg30,095 BTU/lb

Embodied Carbon (primary production)

7.5 kg CO₂/kg
20 kg CO₂/kg
5.5 kg CO₂/kg

Embodied Water

150 L/kg18 gal/lb
60 L/kg7.2 gal/lb

Typical Recycled Content

0%
0%
5%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

12 kN·m/kg
61 kN·m/kg
10 kN·m/kg
10 kN·m/kg

Specific Stiffness (E / density)

26.5 MN·m/kg
97.3 MN·m/kg
7.9 MN·m/kg
9.3 MN·m/kg

Thermal Diffusivity

1.1 mm²/s
71.9 mm²/s
0.4 mm²/s
0.5 mm²/s

Thermal Shock Resistance Index

0
24
0
0

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 scaleAluminum NitridePZT

Manufacturing and finishing

CapabilityNTC CeramicAluminum NitridePZTPZT-4
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 NTC Ceramic 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.