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Ruukki COR-TEN® weather resistant steel

COR-TEN® is a weather resistant steel produced by Ruukki Steel Mills in Finland, COR-TEN® is a registered trademark.

Cladding Australia Pty Ltd. Are the Australian distributors of Ruukki COR-TEN®. We stock 2.5 tonne coils 0.55mm, 0.70mm and 1.5mm thick x 1200mm wide and in flat sheets 3mm thick x 1200mm wide x 2500mm, 3000mm and 3500mm long. The product is available through a network of stockists /national roof and wall cladding specialists – see below.

We can supply COR-TEN® in other thicknesses and widths up to 40mm x 1800mm wide, minimum order quantity 15 tonnes, lead times 14-16 weeks.

Weather resistance – How it works

The atmospheric corrosion resistance of weather – resistant steel is based on the chemical composition of the steel.
Under the influence of weather conditions a dense protective patina layer composed of corrosion products is formed on the surface of the COR-TEN® steel. The protective layer (Patina) develops in approximately 18 months, at first, the protective layer is reddish brown but gains a darker hue with time.

The “Run off” (leaching) of COR-TEN® cladding will slow down and eventually stop entirely, However our cladding specialists will suggest the inclusion a small gutter in the cladding detailing to take the “run off”, or the installation of on-porous materials below the cladding.

Ruukki COR-TEN® is a registered trademark any other weathered steel product marketed as “COR-TEN” is an imitation.

For further information on this unique cladding / construction product please call Cladding Australia Pty Ltd. Tel: 03 94197191 or one of our distributors.



Drill Core Library Adelaide
Cladding Australia supplied the COR-TEN 2000m2 ( orange part) supplied and installed by our SA distributor Cladding and Roofing Pty Ltd….read more



Cladding Australia Suppliers Pty Ltd specialised in advanced materials and technology for the building industry and providing smart constructions solutions for corporate customers in Australasia.

Our mission is to provide our customers with quality and cost effective engineering and profiles.

We strive to lead the way in the industry and pride ourselves with our excellent reputation for reliability, quality and personalised customer service.

As part of our services, Cladding Australia Suppliers Pty Ltd:

For more than two decades, Cladding Australia Suppliers Pty Ltd has been recognised as one the leading forces in providing solutions to the building industry around the world. Our mandate is the commitment to provide our customers with uncompromising integrity and exceptional customer service.

Cladding Australia Suppliers Pty Ltd import high quality materials from the leading companies in Europe . Our products portfolio included materials such as Corten, Aluminium, Zinc, Fire rated Insulated roof and wall panels, Specialized “Blast Proof” Panel systems and more…

Our network of distributors will be happy to provide you with free advise and help you with your next project.

Cladding Profiles

COR-TEN® – Cladding profiles

Our network of distributors will be able to advise on the range of cladding profiles available.


COR-TEN® Coils and flat sheet.


In addition to above COR-TEN® is available up to 40mm thick and widths up to 1800mm Minimum order 15 tonnes. Estimated delivery time 14 weeks .

Special Orders

COR-TEN® – Special orders.

For heavy construction projects.

Ruukki COR-TEN® Is available up to 40mm thick and 1800mm wide, minimum order quantity of 15 tonnes , delivery 14 weeks.


Contact Info
26 East View Crs., Bentleigh East VIC 3165
Jon Lee
email: jon.lee@claddingau.com.au
Office: 03 9945 4423
Mobile: 0428 093 736