What is U value for iron?

The U-value, or thermal transmittance, for a material indicates how well it conducts heat. For iron, the U-value can vary based on its form and thickness, but typically, metals like iron have low thermal resistance, indicating higher U-values. Generally, the U-value for iron is around 50 W/m²K, reflecting its ability to transfer heat efficiently compared to insulating materials. However, this value can change with specific conditions and applications.