Tempering: The final stage in the treatment of high-grade steels which relieves strains in the material and produces any required combination of hardness and toughness.
Tool or drill steel is a name given to uniform or rather reliable grades of steel adapted to heat treatment as tempering or annealing.
(In a later article, we will see which additives are used, and why and how we can increase aluminum's strength by cold work hardening or by tempering.) All the commonly used aluminum alloys are available from the shelf of dealers.
 See also: Propeller, Weight, Aviation, Thickness, Aeronaut
  
|
RSS
