How does cast iron’s high carbon content influence its color in unpolished sculptures?
Cast iron’s high carbon content significantly impacts its color in unpolished sculptures, giving them a distinctive dark gray to black appearance. The carbon forms iron carbides during the casting process, which contribute to the material’s deep, matte finish. Unlike polished metals that reflect light, unpolished cast iron absorbs light due to its rough surface and carbon-rich composition, enhancing its earthy, industrial aesthetic. This natural darkness makes it a popular choice for sculptures requiring a bold, timeless look. Additionally, the carbon content can lead to subtle variations in shade, adding depth and character to each piece.
