Which metal is commonly used for cutting tools and chisels due to its hardness?

• A. Low Carbon Steel
• B. High Carbon Steel
• C. Copper
• D. Aluminium

Answer: (B)

Hardness and the ability to keep a sharp edge are essential for cutting tools and chisels. High carbon steel fits this need because its higher carbon content allows it to be hardened through heat treatment, giving a very hard surface that resists wear and maintains a fine, durable edge during use. Copper and aluminium are comparatively soft and can deform or dull quickly, so they aren’t suitable for tools that must cut and retain sharpness. Low carbon steel doesn’t reach the same hardness even after treatment, so it would wear down sooner. That combination of hardness and edge retention makes high carbon steel the common choice for cutting tools and chisels.