Cladding Australia Suppliers

COR-TEN® Steel

SSAB · FINLAND — AUTHORISED AUSTRALIAN DISTRIBUTOR

The industry standard for self-protecting steel. Engineered in Europe to form a stable, non-corrosive patina that eliminates maintenance while delivering a timeless, structural aesthetic. GENUINE SSAB COR-TEN® specified for commercial, industrial and public building projects across Australia and New Zealand.

INDUSTRIAL RAW MATERIAL SUPPLY · MELBOURNE WAREHOUSE

ABOUT THIS MATERIAL 

WHY CORTEN FOR CLADDING?

COR-TEN® is a high-strength, structural weathering steel that eliminates the need for painting and maintenance by forming a stable, rust-like protective patina. Its unique chemical composition makes it the premier choice for architects and developers looking for a raw, industrial aesthetic that actually grows more durable over time.

“A self-healing material that evolves with its environment—offering decades of structural performance without the cost of corrosion-prevention treatments.”

We supply genuine SSAB COR-TEN® as raw coils and flat sheets, produced under license from U.S. Steel to ensure exact chemical and mechanical properties. Our materials are provided in their un-weathered state for factories and fabricators to process into custom facade panels, architectural screens, and structural features that will develop their signature protective layer once installed on-site.

Corten

Self-Protecting Patina

Engineered to form a dense, stable oxide layer that acts as a natural barrier, significantly slowing further corrosion over time.

Virtually Maintenance-Free

The anti-corrosive properties eliminate the need for painting or repeated protective treatments throughout the building’s lifecycle.

Engineered Longevity

Genuine SSAB COR-TEN® ensures the material performs for decades in demanding environments, outlasting standard carbon steel.

Superior Tolerances

Mechanical properties and dimensional tolerances that exceed EN 10025-5 standards for higher precision during fabrication.

Verified Authenticity

Produced under license from U.S. Steel, conforming to EN S355J2WP and ASTM standards to guarantee consistent weathering results.

Sustainable Lifecycle

A 100% recyclable material with a “self-healing” surface, supporting Green Star ratings and modern eco-conscious builds.

APPLICATIONS

WHO USES IT & HOW

FABRICATORS

Cut, fold and laser-form into custom facade cassettes, architectural screens and landscape features. Works seamlessly with standard workshop equipment and welding processes.

ARCHITECTS & DESIGNERS

Specify for high-impact commercial and public facades where a raw, evolving industrial aesthetic is required. Favored for its ability to “self-heal” and blend with its environment.

LANDSCAPE ARCHITECTS

Utilise flat sheets for retaining walls, planters and public art. Provides a durable, organic finish that integrates perfectly into both urban and natural environments.

INFRASTRUCTURE ENGINEERS

Specify for bridges, utility poles and heavy structures where high-strength steel and zero-maintenance are critical for project longevity.

CLADDING MANUFACTURERS

Feed master coils directly into profiling lines to produce specialized weathering steel panels. Consistent gauge tolerances ensure reliable production runs.

COMMERCIAL BUILDERS

Order direct for large-scale project supply across AU and NZ. Genuine COR-TEN® ensures full compliance with international fire and structural standards.

AVAILABLE NOW FROM MELBOURNE

IN STOCK CORTEN COILS AND SHEETS

The following Genuine SSAB COR-TEN® coils and sheets are held in stock at our Campbellfield warehouse and available for immediate order. Produced under license from U.S. Steel, these weathering steel products are engineered for architectural and structural precision.

Minimum order is 1 full coil or standard sheet pack. Delivery within approximately one week.

Product Type Thickness Dimensions (Width/Length) Approx. Weight
COR-TEN® Master Coil 0.55 mm 1200 mm Width ~2.4 Tonnes
COR-TEN® Master Coil 0.7 mm 1200 mm Width ~2.4 Tonnes
COR-TEN® Master Coil 1.5 mm 1200 mm Width ~2.4 Tonnes
COR-TEN® Flat Sheets 3.0 mm 1200 mm x 3000 mm ~84 kg (per sheet)

Cut to length and slitting to width available for orders of 1 full coil or more. Additional fee applies — contact us for details.

THE NATURAL PROCESS

THE PATINA JOURNEY

Tracking the maturation of genuine SSAB COR-TEN®. As the material is exposed to alternating wet and dry cycles, it develops a self-healing oxide layer. This journey from Mill Finish to a Matured Finish eliminates the need for painting and provides a unique industrial aesthetic that lasts for decades.

Corten Mill Finish Raw Steel
STAGE 01

MILL FINISH*

As Supplied

The steel in its raw, unweathered state. A distinct bluish-grey metallic texture that marks the beginning of the structural maturation process.

Active Corten Weathering Cycle
STAGE 02

TRANSITION*

6 – 12 Months

Atmospheric exposure triggers the initial oxidation. The surface develops a textured spectrum of ochre, orange, and distinct blue-oxide highlights.

Matured Corten Building Facade
STAGE 03

STABILIZED*

2 – 5+ Years

The protective patina reaches full density. The finish settles into a permanent, matte “Burnt Orange” or deep chocolate brown shield.

*Note on Natural Variation: Genuine COR-TEN® is a living material. The cycles shown represent the nominal maturation process. Actual final appearance is determined by local micro-climates, moisture levels, and installation orientation.

TWO WAYS TO ORDER

ORDERING OPTIONS

Whether you need immediate stock or a custom specification, we have three ordering options to suit your project requirements.

Option 01

Local Inventory

  • Material Genuine COR-TEN®
  • Thickness 0.55mm – 3.0mm
  • Availability Immediate / Ex-Stock
  • Min. Order 1 Full Coil / Sheet Pack
  • Lead Time Approx. 1 Week
  • Processing Cut & Slit Available
Option 02

Custom Mill Order

  • Material Weathering Steel Alloys
  • Thickness Any Gauge up to 12mm
  • Width Custom Up to 1500mm
  • Min. Order 6 – 8 Tonnes
  • Lead Time Approx. 4 Months
  • Sourcing Direct from European Mills

ABOUT THE MANUFACTURER

ABOUT SSAB COR-TEN®

SAB is a highly specialised, global steel company and the world’s foremost producer of genuine COR-TEN® weathering steel. Headquartered in the Nordics with major production facilities in Sweden and Finland, SSAB is recognised for engineering materials that define the standards for strength, durability, and structural longevity.

Their architectural and structural steel ranges are specified for the world’s most iconic infrastructure projects—from bridge engineering to high-performance building facades. SSAB products are engineered to withstand the most corrosive atmospheric conditions, providing a self-protecting finish that eliminates the need for painting or ongoing maintenance.

As a pioneer in the industry, SSAB is also leading the transition to a fossil-free future with their HYBRIT technology, aiming to be the first steel company in the world to deliver fossil-free steel to the market.

Cladding Australia is an authorised supplier of genuine SSAB COR-TEN® in Australia and New Zealand.

WORK WITH US

READY TO ORDER OR DISCUSS YOUR REQUIREMENTS?

Whether you need a reliable supplier for ongoing orders or materials for a specific project — we’d love to hear from you.

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