SOLUTION

The selection of a hacksaw blade primarily depends on the shape and hardness of the material.

• Material Hardness:

  • Harder materials (like high-carbon steel, tool steel) require blades with finer teeth (higher TPI – Teeth Per Inch) for effective cutting and to prevent the blade from dulling quickly.
  • Softer materials (like aluminum, brass) can be cut with coarser teeth (lower TPI) for faster material removal.
  • The type of material is crucial; for instance, carbon steel blades are suitable for wood, while high-speed steel blades are ideal for harder materials like steel and alloys.
  • Additionally, the TPI is important; blades with more teeth per inch are better for thinner materials, while those with fewer teeth per inch are suitable for heavy-duty cutting jobs.