What are the differences in thermal expansion between stainless steel and cast iron in multi-material figurative sculptures?
In multi-material figurative sculptures, understanding the thermal expansion properties of materials like stainless steel and cast iron is crucial for durability and structural integrity. Stainless steel has a lower coefficient of thermal expansion (approximately 17.3 × 10⁻⁶/°C) compared to cast iron (around 12 × 10⁻⁶/°C). This means stainless steel expands more under heat, which can cause stress at joints or interfaces when combined with cast iron. Artists must account for these differences to prevent cracking or warping over time, especially in outdoor installations exposed to temperature fluctuations. Proper design techniques, such as flexible joints or expansion gaps, can mitigate these effects, ensuring the longevity of the artwork.
