Tel: +27 11 814 1898


Innovative methods and production techniques are taking steel to new levels of strength, formability and versatility. In Aluzinc, the durability and service life of modern coated steel is extended even further.

Aluzinc is produced by a unique, efficient process whereby rolled steel is continuously hot dipped into a 55% Aluminium, 43.5% Zinc and 1.5% Silicon Alloy.

This patented coating protects the steel in two ways:

  •  The aluminium component of the coating provides a tough physical barrier between the extreme atmospheric conditions and the inner core of steel.
  • The zinc in the coating provides sacrificial protection and also protects the steel at the cut edges.

Cross Section of Aluzinc


Steel: The most recycled material on earth

Steel’s most valuable property is its ability to recycle itself over hundreds of years without any loss to its inherent qualities. On its journey of reincarnation from washing machines to cars, oil cans to ocean liners or railway tracks, steel saves precious raw materials and minimises energy consumption. With global recovery rates averaging more than 83%, steel is one of the most sustainable and environmentally important products made.

Did you know?

  • All steel created as long as 150 years ago can be recycled into new products
  • Steel is the most innovative, recyclable and sustainable material of the 21st century



Quality Inspection

To ensure products sent to our customers are defect free, we have trained quality inspectors who are present during our various production processes.

Quality Testing

During the quality testing of the product we focus on various characteristics such as mechanical properties and coating performance. Aluzinc is tested using the following methods:


Mechanical Property Testing

  • Hardness testing (HRB and HR30T)
  • Tensile and Yield testing (MPa)
  • Elongation (%)

Coating performance

  • Impact testing
  • Bend testing (0T to 3T)
  • Coating mass (g/m2)
  • Cupping test
  • Lock forming testing

Thermal Attributes

The thermal mass of Aluzinc is significantly lower than traditional galvanised steel and clay tile roofs due to the addition of aluminium. This increases the reflection of the sun’s rays creating a cooler building in summer and a warmer building in winter.