T40 Rebar - 40mm High Tensile Reinforcement Bar
Alternative Names: T40 Rebar, H40 Rebar, 40mm Rebar, 40mm Reinforcement Bar, 40mm Steel Bar, 40mm Reinforcing Bar, Reinforcing Steel, Steel Reinforcing Bar, High Tensile Rebar, High Tensile Steel Bar, Deformed Bar, Ribbed Bar, Ribbed Steel Bar, Concrete Reinforcing Bar, Groundworks Steel, Steel Rod, Straight Bar, Stock Bar, Ground Beam Steel, Foundation Bar, Beam Reinforcement Bar, Column Bar, Structural Rebar, Extra Heavy Duty Rebar, Commercial Rebar, Industrial Rebar, Pile Cage Bar, Raft Foundation Bar, Bridge Rebar, Infrastructure Rebar, BS4449 Rebar, CARES Approved Rebar
T40 (also specified as H40) is the largest reinforcing bar Next Day Steel stocks: a 40mm Grade B500B section to BS 4449:2005 for the heaviest civil-engineering demands. Where structures carry extreme loads, this high-tensile ribbed bar provides the maximum reinforcement capacity in our range. At this size bars are engineered into cages and bent shapes, delivered ready to fix and handled with lifting equipment on site.
Typical applications
- Major infrastructure, bridge and dam works
- Deep piling and mega-column construction
- Tunnels and marine structures
- Heavy transfer structures
- The most heavily loaded foundations
Why buy from Next Day Steel
Even at the top of the range, 40mm rebar is held in stock for fast dispatch in 6m lengths, fully CARES certified. Supplied straight or fabricated to your schedule, every bar carries mill certification so traceability is assured on the most critical projects, and heavy deliveries are arranged on suitable vehicles with offload by prior agreement. See the full rebar range or our welded cages for large pours.
Send your bending schedule for a same-day price on cut-and-bent T40.
T40 (40mm) bar lengths & weights
- Weight per bar
- 59.18 kg
- Price
- £65.10 + VAT
Rebar size comparison (BS 4449, Grade B500B)
High-tensile ribbed reinforcing bar to BS 4449:2005. T and H prefixes both denote Grade B500 high-yield bar; the number is the diameter in millimetres. Click a size to view it.
| Size | Diameter | Mass (kg/m) | Bar area (mm²) | Stock lengths | Typical use |
|---|---|---|---|---|---|
| T8 | 8mm | 0.395 | 50 | 3m & 6m | Links, stirrups, light detailing |
| T10 | 10mm | 0.617 | 79 | 3m & 6m | Links, ground beams, domestic foundations |
| T12 | 12mm | 0.888 | 113 | 3m & 6m | Slabs, footings, general RC work |
| T16 | 16mm | 1.579 | 201 | 3m & 6m | Beams, columns, pile caps, retaining walls |
| T20 | 20mm | 2.466 | 314 | 3m & 6m | Heavy frames, rafts, basements |
| T25 | 25mm | 3.854 | 491 | 6m | Large columns, piles, transfer beams |
| T32 | 32mm | 6.313 | 804 | 6m | Bridges, deep foundations, cores |
| T40 you are here | 40mm | 9.864 | 1257 | 6m | Major civils, heaviest foundations |
T40 rebar: frequently asked questions
What is T40 rebar used for?
T40 (40mm) high-tensile rebar is used for major infrastructure, deep piling and the most heavily loaded foundations. The ribbed profile bonds the bar to the concrete so the two work together under load.
What does the T in T40 mean, and is it the same as H40?
The T stands for high-tensile (high-yield) steel. T40, H40 and 40mm rebar all describe the same bar: Grade B500B deformed reinforcing bar to BS 4449:2005 with a 40mm nominal diameter.
How much does a T40 bar weigh?
A 6m T40 bar weighs 59.18 kg. Nominal mass for 40mm bar is shown in the comparison table above.
How much does 40mm rebar cost?
T40 rebar starts from £65.10 + VAT per bar, with current per-length prices shown above. Bulk-buy discounts apply automatically as weight is added to the cart, and cut and bent shapes are priced from your bending schedule.
What standard is T40 rebar manufactured to?
Our 40mm bar is Grade B500B high-tensile ribbed rebar to BS 4449:2005, CARES approved with full mill traceability. (Reinforcement is certified through the CARES scheme rather than CE marking, as EN 10080 is not a harmonised standard.)
Groundworks
Frequently Bought Together
