How does cast iron’s brittleness limit its use in lightweight outdoor chair designs?

Cast iron is renowned for its strength and durability, making it a popular choice for heavy-duty furniture. However, its brittleness poses significant challenges in lightweight outdoor chair designs. Unlike ductile materials, cast iron lacks flexibility, making it prone to cracking or breaking under stress or impact. This limitation is particularly problematic for outdoor furniture, which must withstand variable weather conditions and frequent movement.

Additionally, the weight of cast iron contradicts the demand for lightweight, portable outdoor chairs. Modern designs often prioritize materials like aluminum or reinforced plastics, which offer similar durability without the brittleness or excessive weight. While cast iron excels in static, heavy applications, its inherent properties make it unsuitable for innovative, lightweight outdoor seating solutions. Designers must balance aesthetics and functionality, often opting for materials that combine resilience with practicality.