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Titanium Diboride vs. SiAlON

Both titanium diboride and SiAlON are non-oxide engineering ceramics. There are 20 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is titanium diboride and the bottom bar is SiAlON.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 3540
2620
Elastic (Young's, Tensile) Modulus, GPa 290
290
Flexural Strength, MPa 380
680
Fracture Toughness, MPa-m1/2 6.5
6.3
Knoop Hardness 2800
1700
Poisson's Ratio 0.11
0.23
Tensile Strength: Ultimate (UTS), MPa 280
190

Thermal Properties

Maximum Temperature: Mechanical, °C 1270
1200
Maximum Thermal Shock, °C 110
300
Specific Heat Capacity, J/kg-K 870
880
Thermal Conductivity, W/m-K 58
19
Thermal Expansion, µm/m-K 8.0
3.6

Electrical Properties

Electrical Resistivity Order of Magnitude, 10x Ω-m -6.5
14

Otherwise Unclassified Properties

Density, g/cm3 4.5
3.3

Common Calculations

Stiffness to Weight: Axial, points 35
50
Stiffness to Weight: Bending, points 49
67
Strength to Weight: Axial, points 17
16
Strength to Weight: Bending, points 21
22
Thermal Diffusivity, mm2/s 15
6.4
Thermal Shock Resistance, points 8.7
13