Coefficient of Thermal Expansion (\( C_k \)):

For temperatures below 53 °C:

\[ C_k = 0.0002403 \times T \]

For temperatures equal to or above 53 °C:

\[ C_k = 0.0003364 \times T \]

Where:

• \( C_k \) is the coefficient of thermal expansion.
• \( T \) is the temperature in degrees Celsius (°C).