High-carbon steel is a type of steel that contains a higher percentage of carbon, typically between 0.6% and 1.4%. This increased carbon content enhances its hardness and strength, making it suitable for applications that require durability, such as cutting tools and blades. However, it can also make the steel more brittle, which may limit its use in certain situations. Due to its properties, high-carbon steel is often used in the manufacturing of items like knives, saws, and springs. It can be heat-treated to improve its performance further, allowing it to withstand wear and tear in demanding environments.