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Machinable Glass-ceramic vs. Titanium Diboride

Machinable glass-ceramic belongs to the glass and glass-ceramics classification, while titanium diboride belongs to the non-oxide engineering ceramics. There are 19 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is machinable glass-ceramic and the bottom bar is titanium diboride.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 310
3540
Elastic (Young's, Tensile) Modulus, GPa 67
290
Flexural Strength, MPa 96
380
Fracture Toughness, MPa-m1/2 2.5
6.5
Knoop Hardness 250
2800
Poisson's Ratio 0.29
0.11
Tensile Strength: Ultimate (UTS), MPa 84
280

Thermal Properties

Maximum Temperature: Mechanical, °C 760
1270
Specific Heat Capacity, J/kg-K 790
870
Thermal Conductivity, W/m-K 1.2
58
Thermal Expansion, µm/m-K 21
8.0

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 2.7
4.5

Common Calculations

Stiffness to Weight: Axial, points 14
35
Stiffness to Weight: Bending, points 51
49
Strength to Weight: Axial, points 8.8
17
Strength to Weight: Bending, points 16
21
Thermal Diffusivity, mm2/s 0.56
15
Thermal Shock Resistance, points 4.3
8.7