Metallic Coated Strip

BlueScope Distribution manufactures a range of metallic coated strip steel products. All registered brand names, these products are coated using a continuous hot-dip process, with metals or metal alloys that will inhibit corrosion.

BlueScope’s popular metallic coated strip products are widely used in the construction industry. They are:

  • ZINCALUME®
  • GALVABOND®
  • GALVASPAN®

ZINCALUME® Metallic Coated Strip

Zincalume

Next generation ZINCALUME® boasts BlueScope’s next generation patented Activate™ technology that introduces magnesium into the aluminium-zinc alloy coating to protect, strengthen it, and make it considerably more durable.

The product is manufactured according to the requirements of the Building Code of Australia (BCA) and the Australian standard AS1397 Continuous hot-dip metallic coated steel sheet and strip – Coatings of zinc and zinc alloyed with aluminium and magnesium.

While the original ZINCALUME® product has an AZ150 coating made of a proven mix of 55 per cent aluminium, 43.5 per cent zinc, and 1.5 per cent silicon, and has a guaranteed minimum coating mass of 150 g/m2, the magnesium in the new AM125 product activates the aluminium making it considerably more resistant to corrosion. In addition, the thickness of the coating has been reduced, and the base steel thickness (which excludes the coating thickness) must be clearly marked on the metallic coated strip in a legible and durable manner.

Heralded as a new industry benchmark for the building industry, ZINCALUME® steel is positioned to meet the growing demands of our changing built environments for resilience, durability, and sustainability.

Launched in August 2013, it is a truly versatile product that is widely used for various structural applications, for walling, roofing, flooring systems, cladding, and ventilation applications, as well as for fencing, cool-rooms, and for rainwater storage options.

Available in both sheet and strip, ZINCALUME®’s tough protective coating is incredibly resistant to the typical scuffs and scratches that inevitably happen during the construction process. It has made such a strong impact that roofing applications made from ZINCALUME® steel can be backed by warranties of up to 36 years, depending on the distance the roofing is located from “severe marine influences”. The closer the location, the lower the warranty.

ZINCALUME® AM125 also has a smaller environmental footprint than other products including ZINCALUME® AZ150. A comprehensive Life Cycle Assessment (LCA) of ZINCALUME® next generation steel showed its lifespan had increased, and because it used fewer resources, the environmental footprint had reduced in keeping with the methodology of the Building Products Innovation Council. Reductions include:

  • Climate change 17 per cent
  • Metal depletion 17 per cent
  • Fossil depletion 18 per cent
  • Human toxicity 19 per cent
  • Freshwater ecotoxicology 19 per cent
  • Water depletion 20 per cent

While ZINCALUME® AZ150 and AM125 look identical to the naked eye, they should not be used together on the same roof or walling plane.

GALVABOND® Metallic Coated Strip

Galvabond

GALVABOND® steel products are manufactured using a continuous hot-dip galvanising process that guarantees minimal elongation properties. Also, products do not have the characteristic spangle surface of galvanised steel.

Designed for deep drawing and commercial forming applications, GALVABOND® comes with optional improved surface quality and is manufactured in a range of coating masses. A variety of different pack sizes is available.

Like ZINCALUME®, GALVABOND® is manufactured strictly in accordance with the requirements of the Building Code of Australia (BCA) and the Australian standard AS1397 Continuous hot-dip metallic coated steel sheet and strip – Coatings of zinc and zinc alloyed with aluminium and magnesium.

Intended for a wide range of general manufacturing purposes, GALVABOND® G2 and G2S steels are suitable for a diverse range of items including tube-formed products, metre boxes, trailers, and cable trays, feeder troughs, scaffolding, metal planks, rendering mesh, air conditioning ducts, and panels of various kinds. If stored in normal conditions, G2S steel will remain free from fluting or stretcher strain for at least three months after it has been galvanised.

GALVABOND® G3N and G3NS steels carry a guarantee that they are free from stretcher strain (or fluting) and that they are “non-ageing”. These steels are designed specifically for the manufacture of automotive components and drawn appliance panels and respective components.

GALVASPAN® Metallic Coated Strip

Galvaspan

GALVASPAN® is a special high-strength grade of hot-dipped galvanised steel strip that has been designed specifically for purlins and girts. It is cold-rolled and formed into a wide range of sizes and is also used for various structural framing components for commercial and industrial buildings.

GALVASPAN® steel has a high-tensile core that produces a strength-to-weight ratio that is 60 per cent greater than traditional hot-rolled steel. It has a minimum zinc coating of 350 g/m2 making it highly durable and resistant to corrosion. It is also guaranteed to have a very long life – and so will last for a very long time.

GALVASPAN® purlins carry a BlueScope Steel warranty and customers have access to the company’s technical experts who can provide project-specific advice.

BlueScope Steel Complies With Australian Standards

All steel products supplied by BlueScope Distribution are 100 per cent Australian made, totally industry-compliant, and they can all be traced to the point of production. All products conform to relevant standards and are branded – or marked – so that they can be identified easily. In addition, test certificates, data sheets, and warranties are supplied.

Compliance to international (ISO) and national standards is vital, whether for basic cold-rolled or hot-rolled steel, or products like metallic coated strip. If materials are not compliant, there is no guarantee that the material will perform as you expect it to. However, compliance is only necessary if it is claimed by supporting literature or if there is a required specification.

It is important to note that unmarked steel poses a risk because the consumer has no way of knowing whether it was made according to any specific standard. It is also vital to be aware that while test certificates are important, they are not sufficient on their own because there is no guarantee that they actually match the steel being supplied.

You can rely on BlueScope Steel that is always marked in terms of the standard used for manufacture. Full documentation is available to purchasers.

Contact our team of experts for additional advice and to ensure that the steel and metallic coated strip you choose for your project is not only fit-for-purpose, but of the best possible quality. There is no doubt that by combining the correct coating thickness, base strength, and associated materials and installation practices, manufacturers will realise the greatest potential value and performance.