Welcome to Edcon Steel - Register TODAY - View LIVE prices on over 18,000 steel and metal items - Get quotes and buy online 24/7 -

Steel Flat Bar Grade 300 Plus

Custom-cut to order Delivery or Click & Collect

General

Flat Bars are rectangular shaped solid steel bars which can be used in all manner of construction and fabrication applications.  All our branches stock a wide range of mild steel flat bars in 300 grade mild steel.  All these stocked mild steel flat bars can be cut to your sizes with no minimum size, so you only pay for what you need*. (* limits and cutting charges will apply)

Search Steel Flat Bar Grade 300 Plus below.

Show entries
Image Stock Code Description Usage Dimensions Standard Size

Characteristics

The majority of steel flat bars will be hot rolled and may have a rolled edge or a slit edge.  Selection of your steel or metal flat bar may require these different manufactured types of steel flat bar.    If you require certain special properties for your flat bar please be sure to specify your requirements prior to placing your order.

Common Applications

Mild Steel Flat bars have a huge range of applications, they can be cut, formed, drilled and welded for use in :

Structural – Cleats & Plates

Mechanical – frames and assemblies

General Engineering

Furniture

Automotive

Trailers and Truck bodies

Strapping

Flitch Pates

Garden Edging

 

Edcon Steel Tips

For a smoother, more even and consistent finish cold rolled flat bars are commonly available in Bright Mild Steels (BMS) some branches will stock BMS flats and you can view our selection online here.

All our stores have close to a compete range of Hot Rolled Steel Flat Bar ranges in Mild Steel 300 plus grade Steel in stock on the floor in 6000mm lengths.  Our Branches are continually working on providing convenient pre-cut 1000mm and 2000mm lengths for customers who are looking for smaller lengths of Mild Steel Flat Bar but prefer not to wait to have items cut to size.  Our range includes the complete range of Rydal Steel Flat Bars.  All of our stocked flat bars can be cut to your sizes.  All of our flat bar size are listed here on line.

Surface Preparation and Coatings

Mild Steel Flat Bars are stocked in a Mill Finish.  Mill Finish is an uncoated, untreated finish which as the name suggests, as it comes from the steel mill.  The surface will be dirty, may be contaminated, but generally will be free form oil or chemicals.  The 300 grade mild steel flat bar will also, in many cases, have a mill scale – a thin flaky substance that is a by product of the hot rolling process.

See all Steel Flat Bar

See all Steel products

Why Builders, Engineers & Makers Choose Edcon

18,000+

Products online, ready to order anytime.

1,800+

Steel profiles, plus stainless, aluminium, brass, bronze & copper.

10,000+

Tools & accessories for cutting, welding & drilling.

50+ years

Supplying Australian projects - big and small.

Family-owned

Trusted and standards-compliant since day one.

Steel in Action: Projects & Know-How

Edcon and Industry News A before-and-after UI comparison of the Edcon Steel online cutting optimizer. The "Before" section shows a product page defaulting to "Economical (Full Lengths)" with a rigid table of standard stock lengths. The "After" section shows an updated interface defaulting to "Cut to Size," featuring a flexible table where users can input custom lengths, add more items, or remove rows.

18 May 2026 / Edcon Team

Australia’s First Integrated Online Cutting Optimiser for Cut-to-Size Steel

Edcon Steel’s online cutting optimiser makes cut-to-size ordering easier. Enter multiple lengths and quantities online, reduce manual calculations, improve stock-length efficiency and order custom-cut steel with greater confidence.

Read More
Edcon Customer Projects Collection of restored vintage wood stoves in workshop with craftsman standing behind them.

7 April 2026 / Edcon Team

Bringing Century-Old Wood Stoves Back to Life

Long-time Edcon Steel customer and full-time farmer, Justin Press, has carved out a unique niche restoring antique wood-fired stoves to better-than-new condition.

Read More
Steel and Metal Articles

11 May 2026 / Edcon Team

Ordering steel online is now faster and easier

As Australia’s most comprehensive online steel and metal superstore, we’ve put together a helpful guide on how to order steel online.

Read More

Ready to Get Steel Your Way?

Leading brands