Buy our bright mild steel round bar in grade EN3B (080A15), supplied in 3m lengths — also called bright drawn round bar, bright bar or precision round bar. Bright drawn for a smooth surface finish and close dimensional tolerance, it is ideal for machining, turning, shafts, pins and precision fabrication, in diameters from 4mm to 25mm, with cut-to-size on request and fast UK delivery.
Bright Round Bar Sizes & Weight Chart
EN3B bright mild steel round bar size chart with weight per metre. All bar in 3m lengths or cut to size.
| Diameter | Weight (kg/m) |
|---|---|
| 4mm | 0.10 |
| 5mm | 0.15 |
| 6mm | 0.22 |
| 8mm | 0.39 |
| 10mm | 0.62 |
| 12mm | 0.89 |
| 16mm | 1.58 |
| 20mm | 2.47 |
| 25mm | 3.85 |
Popular bright bar sizes include 6mm, 8mm, 10mm and 12mm bright round bar for machining, shafts and pins. Weights are calculated from the section dimensions — for any size use our metal weight calculator.
Rackerman is a UK steel supplier: buy bright mild steel round bar — EN3B / 080A15 bright drawn round bar, bright bar or precision round bar — online with fast mainland UK delivery and cut-to-size service, a convenient alternative to a local steel stockholder near you.
Key Features
- Grade EN3B (080A15) bright drawn mild steel
- Smooth bright surface finish and close dimensional tolerance
- Solid round section in 3m lengths
- Diameters from 4mm to 25mm
- Ideal for machining, turning, drilling and precision fabrication
- Suitable for shafts, pins, dowels and engineering components
- Cut to size available on request
About EN3B (080A15) Bright Bar
EN3B, also known as 080A15, is a low-carbon bright drawn mild steel. The bright drawing process gives a smoother surface finish and tighter dimensional tolerance than hot-rolled bar, making it well suited to machining, turning and applications where finish and accuracy matter. It is readily welded, drilled and fabricated.
Bright Bar vs Hot-Rolled (Black) Bar
Bright bar is cold drawn for a clean, accurate finish and closer tolerance, ideal for machining and visible work. Hot-rolled (black) bar, such as our S275 round bar, has a darker scaled surface and looser tolerance, and is typically chosen for general structural and fabrication use where finish is less critical.
Common Uses
Machining and turning, shafts, pins, dowels and spacers, engineering components, brackets, repair work and general precision fabrication.
Finish
Supplied bright drawn with a smooth finish. Bright bar is not corrosion-protected, so for outdoor or damp use it should be cleaned and protected with a suitable coating.
Compare Our Round Bar Range
Choose the right round bar for the job: S275 mild steel round bar (6m) and 3m round bar for general fabrication, this bright EN3B round bar for machining, 6063 aluminium round bar for light weight and 304 stainless steel round bar for corrosion resistance.
Delivery Information
Lead times are currently 3-5 working days. Bars are supplied in 3m lengths, so suitable delivery access is required. If your order is long or heavy, please ensure someone is available to help with offloading on arrival.