Heat Treatment



Bohler Uddeholm Africa is proud to be the South African industry leader in vacuum heat treatment.

We are able to boast the fact that we have the most advanced vacuum heat treatment plant in the southern hemisphere.

Vacuum Hardening Furnace

Vacuum hardening is the highest standard of technology when it gets to the hardening of tool steels and stainless steels.

Furthermore, it is environmentally sound, clean and also cost-effective due to modern program controllers which ensure complete re-productability.

Our vacuum heat treatment facilities are strategically placed throughout South Africa in order to be able to service our valued customer.

Vacuum facilities are available in Gauteng, Natal, Port Elizabeth and Cape Town .

Plasma Nitriding


Bohler Uddeholm Africa offers the only Plasma Nitriding Service in South Africa at present.

Plasma Nitriding is a unique surface treatment process with the ability to create wear and corrosion resistant surfaces on:

  • Cast Iron
  • Carbon and Alloyed Steels
  • Stainless Steels

Advantages of Plasma Nitriding

  • low temperature processing
  • better control on compound layer metallurgy and diffusion depth
  • uniform properties independent of component geometry and shape
  • low operating cost
  • clean and non-polluting

At present four plasma Nitriding furnaces are in operation with the capacity to treat components of only a few grams of weight to components up to 4.5 meters long and weighing up to 6 000kg.

For additional technical information on Plasma Nitriding please
contact : Danie Goosen or Gus Schroeder on
(011) 571 2320

Salt Bath Furnaces

Hardening is also done in our salt bath furnaces which includes :

  • Case Hardening
  • Liquid Nitriding
  • Stress Relieving
  • Annealing

We also carry out neutral hardening on tool steels.

Tempering Furnaces

Tempering Furnace provides a reliable platform for achieving various mechanical properties during tempering as well as reduces the residual stresses during the stress relieving process.

We are by far the biggest heat treatment company for tool steels and special steels in South Africa.

Through our technical know how and technological advantage over the rest of the market, you can be assured of the best service and quality.

For additional information, please contact Gus Schroeder,
Divisional HPM Manager, on (011) 571 2340 or email : schroeder.g@bohler.co.za