GR350 Plate Steel



AS/NZS 3678-250

General Description

A high strength structural steel product with 350MPa nominal yield strength.

Typical Uses

  • General fabrication
  • Structural members
  • High-rise buildings
  • Bridges
  • Storage tanks

Key Features

  • Guaranteed minimum strength levels
  • Excellent weldability
  • Good formability

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.

Manufactured and supplied by BlueScope the following GR350 steel plate can be sourced and made available (also known as XLERPLATE® steel)

 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

For all the details relating to these steel plate products please see relevant BlueScope datasheets.


More Information


Calibre Steel are proudly associated with BlueScope as their high quality steel plate products and service aligns 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. Nata certified test certificates and Green Star Compliance for those government and civil projects requiring quality assurance and environmental sustainability.

In addition, with BlueScope being local – technical support is only a phone call and if there is an issue, a face to face visit will be schedule urgently, compared to the challenges with getting answers from overseas suppliers and mills. At Calibre Steel, we generally stock GR350 steel plate in a wide range of sizes 2400 x 9600 and 3000 x 12000, and thicknesses 5mm – 100mm as available and can easily custom order other widths and lengths if required for your project. We can also access GR300 steel plate, depending on availability.

Contact Us


Information about products and updates to Calibre below.