Generally, yes. Plastics have lower melting points compared to metals. Metals typically have strong metallic bonds that require higher temperatures to break, resulting in higher melting points. In contrast, plastics are composed of long chains of repeating organic molecules held together by weaker intermolecular forces. These weaker forces require less thermal energy to overcome, leading to lower melting points for plastics. There are exceptions, however. For example, some high-performance plastics like PEEK (Polyetheretherketone) and certain ceramics can have melting points higher than some metals.