This lecture covers the properties and production processes of metals and alloys, focusing on copper and steel. It begins with an overview of copper alloys, including their designations and classifications according to various standards. The instructor explains the extraction of copper and its applications, detailing the characteristics of different copper alloys such as brass and bronze. The lecture then transitions to steel, discussing its physical properties, production methods, and the significance of carbon content in determining whether the product is steel or cast iron. The instructor elaborates on the processes involved in steelmaking, including the use of blast furnaces and converters, and the importance of refining techniques to achieve desired material properties. Throughout the lecture, various diagrams and microstructures are presented to illustrate the concepts discussed, providing a comprehensive understanding of the metallurgical principles governing these materials.