工具钢, or "tool steel," is a type of steel specifically designed for making tools and dies. It is known for its hardness, resistance to abrasion, and ability to retain shape at high temperatures. These properties make it ideal for manufacturing cutting tools, molds, and other equipment that require durability and precision. There are various grades of 工具钢, each tailored for specific applications. Common types include 高碳工具钢 (high carbon tool steel) and 合金工具钢 (alloy tool steel), which offer different balances of hardness and toughness. The selection of the appropriate 工具钢 is crucial for ensuring the performance and longevity of the tools produced.