Which material is commonly used in mechanical applications for tool manufacturing?

Carbon steel is commonly used in mechanical applications for tool manufacturing due to its excellent hardness and wear resistance properties. It can be heat-treated to achieve specific hardness levels, making it suitable for tools that need to maintain their cutting edge during prolonged use. This material is also relatively inexpensive compared to other options and can be easily fabricated, which is vital in the tool-making industry.

While aluminum is lightweight and has excellent corrosion resistance, it lacks the necessary hardness for most tool applications. Stainless steel offers good corrosion resistance and strength but may not withstand wear as effectively as carbon steel for cutting tools. Copper, although useful in electrical applications due to its conductivity, is not typically used in tool manufacturing because it is too soft and not suitable for cutting or high-impact applications. Therefore, carbon steel stands out as the best choice for tools that require durability and sharpness.