XLERPLATE® steel supplied by Calibre Steel.

XLERPLATE® steel is BlueScope’s flagship heavy structural steel plate product, designed and manufactured to meet the most stringent Australian standards, ensuring customers receive a reliable, consistent, and high-performing product every time. The steel is produced at BlueScope’s Port Kembla Steelworks, one of the world’s most advanced steel manufacturing facilities, which guarantees tight control over quality and traceability.

The versatility of XLERPLATE® steel is evident in its broad range of available grades, thicknesses, and widths. It spans from general-purpose mild steel to high-strength grades, including quenched and tempered options that deliver superior mechanical properties for demanding applications. This adaptability allows fabricators and engineers to select the exact steel grade and thickness to optimise weight, cost, and performance.

Calibre Steel can supply the full range of XLERPLATE® steel products, including grade 250 floorplate.

AS/NZS 3678-250/350
STRUCTURAL STEEL PLATE

The exceptional toughness and weldability of XLERPLATE® steel make it a preferred choice in structural engineering, heavy fabrication, and infrastructure projects. The product offers excellent notch toughness, reducing the risk of brittle fracture in cold environments, which is crucial for Australian outdoor applications exposed to variable weather conditions.

Manufactured and supplied by BlueScope, the following XLERPLATE® steel GR250/350 steel plate products are available.

GradeThickness Range (mm)AvailabilityEdge ConditionImpacted Testing Availability (L15, L20)*

ASNZS 3678


Structural Grades


Grade 2505 – 150Standard Sizes

Outside Standard Sizes refer to Custom Range

> 115mm By enquiry
Trimmed / Untrimmed8mm – 100mm, By Enquiry
Grade 250 Floorplate6 – 12Standard SizesUntrimmedBy Enquiry
GradeThickness Range (mm)AvailabilityEdge ConditionImpacted Testing Availability (L15, L20)*

ASNZS 3678


Structural Grades


Grade 3008 – 60By Enquiry OnlyTrimmed / Untrimmed8mm – 40mm, By Enquiry
Grade 3505 – 100Standard Sizes

Outside Standard Sizes refer to Custom Range

> 80mm By enquiry
Trimmed / Untrimmed8mm – 100mm

Custom Range

The Calibre Steel custom range offers flexible order quantities and a wide variety of grade and size combinations ordered to specification on a standard mill lead-time. Optional mechanical testing options are available upon enquiry.

XLERPLATE® 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.

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 G250 and G350 XLERPLATE® steel plate products in a wide range of thicknesses as available and can easily custom-order other widths and lengths if required for your project.

Applications cover a wide spectrum from large-scale construction projects like bridges, stadiums, and commercial buildings, to specialised uses such as wind turbine towers, mining equipment, and pressure vessels. The product’s consistent dimensional tolerances and flatness help fabricators reduce waste and improve efficiency on shop floors and construction sites.

In terms of sustainability, XLERPLATE® steel is produced with an emphasis on minimising environmental impact. The Port Kembla facility utilises energy-efficient manufacturing processes and sources raw materials responsibly. The steel’s 100% recyclability contributes to circular economy initiatives in the construction and manufacturing industries.

BlueScope’s commitment to ResponsibleSteel™ certification assures customers that XLERPLATE® steel is sourced and manufactured to the highest ethical and environmental standards. For specifiers and project managers, this means that incorporating XLERPLATE® steel can contribute to green building certifications and corporate sustainability goals.

Overall, XLERPLATE® steel delivers a balance of strength, durability, and versatility backed by rigorous quality assurance and local manufacturing expertise, making it a cornerstone product for Australia’s steel-intensive industries.

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