Hardening & Tempering Process.

Hardening and Tempering is a thermal process that strengthens steel through a controlled heating and cooling process.

This process will result in improved mechanical properties and give a tougher more durable product. The hardening process involves heating the steel to above the critical temperature for the given grade and then rapidly cooling. Whilst this process achieves the highest mechanical stengths and hardness’s, steel in this condition is extremely brittle and therefore requires further treatment in the form of tempering. This consists of reheating the steel to a lower temperature and holding the steel at the given temperature for a given period of time. As with traditional annealing (used to soften steels) this process is conducted in an inert atmosphere to avoid oxidation.

The exact temperature and processing times vary with given grades of steel and the process is very specialized.

Steel Strips-Grade 50Cr4V2

This grade of steel can achieve a maximum hardness of 670VPN after hardening and tempering.

Chromimum is a strong carbide former and can improve and some what increase resistance to softening during tempering. This helps the component to retain its elasticity and tensile strength even at very high temperatures.

Thickness: 0.50 mm to 4.00 mm
Width: 8 mm to 350 mm
Hardness: Fully annealed(soft) material with a maximum hardness of 210 VPN.

Application: Tension springs, high tesile spring washers & circlips, special purpose cutters & knives, etc.

For more information, we invite you to visit us at, www.btstrips.com