REDCOR® steel supplied by Calibre Steel.
Calibre Steel supplies REDCOR® steel from our strategically located sites in Perth, Melbourne and Sydney.
REDCOR® steel is BlueScope’s premium weathering steel product, uniquely engineered to develop a protective oxide layer called a ‘patina’ when exposed to natural weathering. This patina forms a stable barrier that shields the steel from further corrosion, significantly extending its lifespan while eliminating the need for additional protective coatings or ongoing maintenance.
Over time, the steel surface transforms, exhibiting a rich palette of warm hues—from bright orange to deep brown and purple tones, giving REDCOR® steel its distinctive, evolving aesthetic that blends beautifully with natural and urban landscapes alike.
The corrosion resistance provided by this natural patina makes REDCOR® steel a particularly cost-effective choice for outdoor and architectural applications. Its durability in harsh Australian weather conditions ensures structures maintain their integrity with minimal upkeep, making it ideal for long-term projects where maintenance access is challenging or costly.
Beyond its practical benefits, REDCOR® steel is highly valued by architects and designers for its organic appearance, enabling creative expressions in facades, sculptures, noise barriers, and landscaping features that harmonize with their surroundings.
BlueScope manufactures REDCOR® steel in a range of grades, thicknesses, and sizes to suit a wide variety of applications. The material is produced to comply with Australian Standards such as AS/NZS 3678:2016, ensuring consistent quality and performance.
AS/NZS 3678:2016
When fabricating with REDCOR® steel, certain best practices should be followed to ensure optimal performance and longevity. Welding techniques must be carefully selected to maintain the integrity of the steel and avoid compromising its corrosion resistance. Handling the material with care is also important, keeping the steel free from contaminants such as oils, greases, or concrete residues that can interfere with the natural patina formation. Design details such as adequate drainage and ventilation are critical to promote even weathering and prevent water from pooling, which could accelerate localised corrosion.
REDCOR® steel is best suited for environments where wet and dry cycles occur regularly, such as inland and urban settings. However, it is not recommended for use in marine environments with high salt exposure or in constantly wet conditions where the protective patina cannot properly form. Understanding the local environmental conditions is essential when specifying REDCOR® to ensure the material’s longevity.
Manufactured by BlueScope, the following REDCOR® steel plate products are available.
| Grade | Thickness Range (mm) | Width Range (mm) | Length (m) | Standard |
|---|---|---|---|---|
| WR350B | 10–80 | 1600–3000 | 4–18* | AS/NZS 3678:2016 |
| WR350L0B | 10–80 | 1600–3000 | 4–18* | AS/NZS 3678:2016 |
| WR350L20B | 10–80 | 1600–3000 | 4–18* | AS/NZS 3678:2016 |
| CW300A | 0.7–2 | 1155–1250 | – | AS/NZS 1595:1998 |
| HW350A | 3–10 | 1155–1250 | 2.4–12 | AS/NZS 1594:2002 |
| WR350A | 8–12 | 1800–3000 | 4–18* | AS/NZS 3678:2016 |
REDCOR® steel manufactured by BlueScope
Calibre Steel is proudly associated with and supplied by BlueScope as their high-quality steel plate products and service align with our own offerings. We offer all our customers full traceability and certification on all BlueScope steel plate products, providing peace of mind for all types of projects. Test Certificates and Green Star Compliance are made readily available for government and civil projects requiring quality assurance and environmental sustainability. From a sustainability perspective, REDCOR® steel supports environmentally responsible construction by reducing the need for painting and maintenance, which often involve volatile organic compounds (VOCs) and other chemical treatments. Its long service life and recyclability further contribute to lowering a project’s overall environmental footprint. By incorporating REDCOR® steel, designers and builders can achieve durable, visually striking structures that align with modern sustainability goals.
In addition, with BlueScope being local, technical support is only a phone call away. If there is an issue, a face-to-face visit will be scheduled urgently, unlike the challenges of getting answers from overseas suppliers and mills. At Calibre Steel, we generally stock REDCOR® steel in a wide range of thicknesses as available and can easily custom-order other widths and lengths if required for your project.
For those interested in technical details or planning large-scale projects, BlueScope provides comprehensive resources, including product brochures, technical bulletins, and datasheets that offer guidance on specifications, handling, and installation of REDCOR® steel.
REDCOR® steel delivers an exceptional combination of natural beauty, structural durability, and sustainability benefits. Whether used in architectural facades, bridges, public art installations, or landscaping features, REDCOR® steel stands out as a premium weathering steel solution tailored to the unique needs of Australian environments and design aspirations.