Modern radiators are usually made of which material?

Modern radiators are typically made of steel because this material provides a good balance of properties for effective heat transfer and structural integrity. Steel is lightweight yet strong, making it easy to manufacture and handle in various sizes and designs. It also offers good thermal conductivity, which is essential for efficient heating, allowing the radiator to quickly transfer heat into the living space.

Moreover, steel radiators are often less expensive than other materials, making them a cost-effective choice for manufacturers and consumers alike. The use of steel does not diminish the effectiveness compared to traditional materials like cast iron, which was commonly used in the past but is heavier and slower to respond to temperature changes.

Although stainless steel and copper have their own applications in heating systems, they are less common for modern radiators. Stainless steel is generally used for its corrosion resistance in specific contexts, while copper, while excellent for conductance, is more often found in piping rather than in the bulk structure of radiators due to cost considerations.