Thermoplastic的性能是只有塑料才有的特性么？金属是不是就不能有Thermoplastic？

Plastic: Any of various organic compounds produced by polymerization, capable of being molded, extruded, cast into various shapes and films, or drawn into filaments used as textile fibers.

Plastic必须是有机合成的材料，具有可塑的、塑性、粘性的特性。金属熔体的粘弹性与塑料完全不同，因此不能被称为Thermoplastic。当然，某些金属可以采用与塑料类似的加工方法来成型，比如说注塑铝镁合金等。