Material specification

Anti-corrosion solutions BlueScope Steel offers you the most advanced anti-corrosion protection systems: two substrates (metal base) with high corrosion resistance.

ZINCALUME® steel: A high-performance anti-corrosion coating

  • ZINCALUME ® AZ150 metallic coating:
    corrosion protection.
  • Steel base :
    mechanical strength.
  • ZINCALUME ® AZ150 metallic coating:
    corrosion protection.

Its technological license has been resold in many countries, and ZINCALUME® is now the benchmark steel for corrosion resistance, particularly in marine environments.
ZINCALUME® steel is coated with 150 g/m² of zinc-aluminium alloy (AZ150) on both sides as standard. It is protected from atmospheric corrosion by the two intrinsic properties of zinc and aluminum:

A protective barrier: the zinc/aluminium coating itself insulates the steel from the corrosive environment, as it is resistant and non-porous.
Sacrificial protection: steel exposed in uncoated areas (scratches, cut edges, holes) is protected by the sacrifice of nearby zinc.
For additional corrosion protection, a paint coating adapted to the Caledonian climate can be applied to the ZINCALUME® substrate.

High-resistance paints

  • Coat of paint: color
  • Primer: corrosion inhibitor
  • Conversion coating: adhesion
  • Substrate: ZINCALUME® steel
  • Conversion coating: adhesion
  • Primer: corrosion inhibitor
  • Undercoating or paint layer

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Stainless steel

This is a steel to which certain elements, including chromium, have been added and which is intended for use in extremely corrosive environments. BlueScope Acier stainless steel contains less than 1.2% carbon and 18% chromium. It is the addition of chromium that gives it its durability and resistance to corrosion. Stainless steel grades are classified into five main families by standard NF EN 10088, according to the chemical composition of the metal. BlueScope Acier stainless steel complies with this standard, and corresponds to stainless steel grade 1.4016 (or AISI 430).

Stainless steel is used to manufacture COLORBOND® Inox pre-painted steel for use in extreme environments.

ZAM, the high-strength alloy!

  • High resistance to corrosion
  • Long-term durability
  • Mechanical resistance
  • Excellent adhesion
  • High thermal reflectivity
  • Recycling compatibility
  • Up to 20 years' warranty on your ZAM metal structures

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ZAM coating is a metallic coating, also known as zinc-aluminium-magnesium coating. It is an alloy composed mainly of zinc, aluminum and magnesium, used to protect metal surfaces from corrosion.

ZAM coating is commonly used in a variety of applications, including the structural steel industry for roofing, cladding, solar panels, transportation infrastructure, agricultural equipment, heating and air-conditioning systems, and many others.

Standards and warranties

RCNC approval

Arrêté n°2020-20686/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - Trimdeck Zincalume sheets Nouméa
Arrêté n°2020-20688/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - les tôles Trimdeck Zincalume Koné
Arrêté n°2020-20690/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - Trimdeck XRW sheets Nouméa
Arrêté n°2020-20692/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - Trimdeck XRW sheets Koné
Arrêté n°2020-20694/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - Trimdeck ultra plates Nouméa
Arrêté n°2020-20696/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - les tôles Trimdeck ultra Koné
Arrêté n°2020-20698/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - Zincalume corrugated sheets Nouméa
Arrêté n°2020-20700/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - les tôles ondulées Zincalume Koné
Arrêté n°2020-20702/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - XRW corrugated sheets Nouméa
Arrêté n°2020-20704/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - les tôles ondulées XRW Koné
Arrêté n°2020-20706/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - ultra corrugated sheets Nouméa
Arrêté n°2020-20708/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - les tôles ondulées ultra Koné
Arrêté n°2020-20710/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - Klipok Zincalume sheets Nouméa
Arrêté n°2020-20712/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - les tôles Klipok Zincalume Koné
Arrêté n°2020-20714/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - Klipok SRW sheets Nouméa
Arrêté n°2020-20716/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - les tôles Klipok SRW Koné
Arrêté n°2020-20718/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - Klipok ultra plates Nouméa
Arrêté n°2020-20720/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - les tôles Klipok ultra Koné
Arrêté n°2020-20722/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - covermax Zincalume sheets Nouméa
Arrêté n°2020-20724/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - Zincalume covermax sheets Koné
Arrêté n°2020-20726/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - les tôles covermax XRW Nouméa
Arrêté n°2020-20728/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - les tôles covermax XRW Koné
Arrêté n°2020-20730/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - les tôles covermax ultra Nouméa
Arrêté n°2020-20732/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - les tôles covermax ultra Koné
Arrêté n°2022-2370/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - galvanized steel C sections Nouméa
Arrêté n°2022-2380/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - galvanized steel C sections Koné
Arrêté n°2022-4888/GNC-Pr agrément provisoire matériaux/procédés - Bluescope Acier NC - U sections - Nouméa
Arrêté n°2023-6262 Pr modifiant divers agrément matériaux/procédés - Société Bluescope Acier NC

Raw materials that comply
with French standards

All our raw materials comply with current French standards.

  • BlueScope Acier Acier stainless steel complies with NF EN 10088 "Aciers Inoxydables".
  • ZINCALUME® steel complies with :
    • NF EN 10326 "Continuous hot-dip coated mild steel strip and sheet - Technical delivery conditions".
    • NF EN 10143 "Hot-dip continuous metal-coated steel sheet and strip - Tolerances on dimensions and shape".
  • COLORBOND® and COLORSTEEL® paint coatings comply with :
    • XP P 34301 "Pre-painted or organic film-coated steel sheets and strips for building applications".
    • NF EN 10169 "Flat steel products continuously coated with organic material (prepainted)".
    • NF P 34301

BlueScope Acier's commitment to quality

Products for New Caledonia's specific climatic conditions
New Caledonia is characterized by a marine environment coupled with a subtropical climate (high UV radiation and high relative humidity). All these factors must be taken into account to determine the level of corrosion your building will be exposed to, and to select the right coating for long-lasting performance.

Quality proven by real-life exposure tests
Tests on natural exposure sites are the most important, as they are the only way to validate the product's behavior under real conditions of use. French standards recommend test sites that do not correspond to the specific climatic conditions of New Caledonia, but nevertheless allow the use of other test sites. We have therefore chosen to carry out our tests at Australian exposure sites recognized by the French COFRAC (NATA accreditation), located in areas with a climate similar to or more severe than that of New Caledonia, and on the same latitude. All our products are continuously tested on natural sites for decades, so we know exactly how they evolve and how long they last.

Southern Province's commitment

The South Province supports us by officially recognizing the compliance of our ZINCALUME®, COLORBOND® and COLORSTEEL® products with French and Caledonian regulations.

Colorbond XRW and Colorbond Ultra sheet warranties

Our sheets are divided into two ranges: Colorbond XRW and Colorbond Ultra. These two types of sheet are distinguished by their resistance to an aggressive marine environment, the Ultra being more resistant. Here's a summary of our sheet warranties. They vary according to the environment, broken down into 5 categories in accordance with ISO 9223-2012.

Bluescope guarantees

Sheet metal Category C1 - C2 - C3 C4 C5
Ultra Perforation 20 years 15 years 12 years
Paint 15 years 15 years 10 years
XRW Perforation 10 years 10 years Not guaranteed
Paint 10 years 10 years Not guaranteed
C1: Very low - C2: Low - C3: Medium - C4: High - C5: Very high - CX: Extreme

ZAM coating warranties

Here's a summary of ZAM coating warranties. These vary according to the environment, broken down into 5 categories in accordance with ISO 9223-2012.

Coating Category C1 - C2 - C3 C4 C5
ZAM Perforation 20 years 20 years 20 years
C1: Very low - C2: Low - C3: Medium - C4: High - C5: Very high - CX: Extreme