Breviary Technical Ceramics






5.4.2 Coefficient of linear expansion

The thermal coefficient of linear expansion [10^-6 K^-1] of technical ceramics is usually less than that of steel or grey cast-iron, with the exception of zirconium oxide, forsterite and MgO. This must be taken into account in composite construction.

When comparing the linear expansion of different materials, it is important to note the temperature range, e.30-100 for figures relevant to the range from 30 to 100 °C.

Test our procedures for determining coefficients of thermal expansion are specified in DIN EN 821-1 and DIN EN 60 672-2.

Figure 92:
A guide to the flexural strength and coefficient of expansion of selected materials


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