Heat Treatment

Our heat treatment plant is divided into three departments, each specialising in a unique process range.

The Macsteel Heat Treatment Plant is the largest most diversified heat treatment plant is South Africa. The heat treatment plant is divided into 3 departments, each specialising in a unique heat treatment process range.

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The heat treatment plant control instrumentation is computer driven and is on par with any similar system anywhere in the world.

Batch Processes:

  • Annealing
  • Normalising
  • Sub-Critical Annealing
  • Stress Relieving
  • Harden and Temper (Both Water & Oil quench Facilities) 

Specialised Processes:

  • Case Hardening (Gas Carburising & Gas Nitriding)
  • Neutral Hardening
  • Vacuum Hardening and Tempering

Continuous Processes:

  • Neutral Hardening
  • Austemper Process
  • Furnaces & Ancillary Equipment used in the Heat Treatment Plant 

Batch Processes:

  • 8 off Gas Fired Top Hat Furnaces that can handle up to 7m length bar stock
  • Water & Oil quench facilities
  • 2 Straightening Presses to straighten from 40mm dia to 320 dia.
  • 2 straightening Reelers to straighten 16mm dia to 40mm dia. 

Specialised Processes:

  • 2 off Pit Retort Furnaces for gas carburising
  • 2 off Pit Retort Furnaces for neutral hardening
  • 2 off Sealed Quench Furnaces for neutral hardening and carburising
  • 2 Vacuum Furnaces
  • 1 Vacuum Temper Furnace
  • Shot and Bead Blasting facilities
  • Cryogenic freezing facilities

Continuous Processes:

  • 2 off gas fired Shaker Hearth Furnaces
  • 1 off electric Shaker Furnace
  • Continuous & Batch Tempering furnaces
  • 1 Austemper Furnace

Service Enquiry


We know that customers’ steel requirements often exceed the product itself. That’s why we are proud to offer leading value added services for all your manufacturing requirements. Here’s a quick overview of these services. Enquire about them today to ensure your project deadlines and requirements are met.