Square Edge Convex | Hot Rolled Steel | Harris (Steels) Ltd
Harris Steels | Quality steel stockholders in Halesowen, West Midlands. Harris (Steels) are a quality driven Steel Stockholder and Processor, fully accredited with ISO 9001:2015 quality management systems.
Quality steel stockholders in Halesowen, West Midlands.
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Square-edge Convex

W x T Se R Kg/m L

40

x

12

6

36.0

3.36

6.0

50

x

12

6

55.0

4.21

6.0

Dimensional Tolerances

Width (W) mm Thickness (T) mm

Tolerance band

Tol ± (mm)

Tolerance band

Tol ± (mm)

40

80

1.0

3

20

0.5

Bar Length (L) m Tol (mm)

6

+300 -0

Where tolerance bands overlap, the greater value is applied

Square-edge Convex


to spec EN10025: 2004 S275JR+AR

Hot-rolled Square edge convex - Harris (Steels)
square-edge convex

W – Width
T – Thickness
Se – Square edge height
R – Radius
Kg/m – Kilos per linear metre
L – Length


Contact Harris Steels if you would like to request a price, place an order, or have any further questions about our Square-edge Convex steel range.

About this product

Hot rolled convex bar is a low carbon product suitable for a variety of applications but is mainly used for handrails, furniture, rubbing strips and architectural metalwork. The low carbon content (0.22% max) and low yield point (275N/mm² min) of the steel enable easy forming, fabrication and machining processes to be carried out without the need for specialist tooling requirements or heat treatments. The outside of the bar in the AR (as rolled) condition has a blue/grey coloured finish, this is known as the surface scale and can be removed by pickling and oiling (P&O) or various abrasives including shot blasting. The scale also provides a limited protection against light corrosion, this is often more visible during the warmer months due to a rapid temperature change post shot blasting. Condensation can form and react with the steels iron content and form rust discolouration.

All products are manufactured to production tolerances and hot rolled products are no exception. A billet or bloom is heated to around 1200°C and fed through a series of different rolls including roughing, intermediate and finishing. These rolls reduce the cross sectional area and conversely increase the billet or bloom length. The shape and specification dimensions of the section is also produced at this stage. From leaving the furnace at 1200°C the material is cooling down and will eventually pass through the finishing rolls at around 900°C, the rate of cooling is critical to the properties of the steel and suitability for application. Due to the significant temperature reduction to cold and with no subsequent finishing before end use, it is not possible to precisely control the section tolerances during hot rolling. Tolerances vary depending on the size of section but are typically 0.4 mm up to millimetres on larger sections.

Hot rolled square edge convex is available in 6 metre lengths only, however smaller sizes of feather edge convex outside our stock range are available 4 metre lengths.

Specification stocked:

BS EN10025:2004 S275JR+AR

Product range:

40 x 12 mm up to 50 x 12 mm

Sectors of use:

  • Agriculture
  • Architectural
  • Fencing and Security
  • Transport
  • Seating and Furniture
  • Storage and Handling