Home > Products > High Yield Coils

High Yield Coil

Our Grade B500C reinforcement can also be supplied in spooled coils of 2.2 Tonnes, known as high yield coil. Celsa Grade 500C Celsamax (link to Celsamax) high yield reinforcing coils exceed the requirements of BS4449:2005 +A3:2016 Grade 500B, are fully weldable, and are available, ex-stock in all BS4449:2005 +A3:2016 preferred sizes, from 8 to 20 mm.

All our B500C reinforcement is BBA and CARES approved, and is certified to the BES6001 responsible sourcing standard through the Eco-Reinforcement responsible sourcing scheme.

Nominal size Cross-sectional area Mass per metre
mm mm2 (kg)
8 50.3 0.395
10 78.5 0.616
12 113.1 0.888
16 201.1 1.58
20 314.2 2.47

Mechanical properties

Yield strength Re (characteristic) 500MPa
Bend requirements BS 4449:2005 + A3:20165
Fatigue requirements BS 4449:2005 + A3:2016
Bond requirements BS 4449:2005 + A3:2016
BS 5400-4:1990
BS EN 1992-1-1:2004
BS EN 10080:2005
Eurocode 2 (EC2)
Welding requirements BS 4449:2005 + A3:2016,
BS EN 10080:2005
BS 7123:1989

Ductility properties

Stress ratio: Ultimate tensile strength/Yield strength (fs/fy) 1.15 to 1.35
Uniform elongation (Agt) ≥ 7.5%


  • It is generally used for the manufacture of links for confinement in reinforced concrete structures.
  • Ends of coils can be welded together so the process doesn’t produce any waste.
  • Celsa’s high yield coil is of Grade C ductility, and can be straightened and used as reinforcing bar.
  • Once straightened it can be used in the production of Grade 500C mesh.
  • Celsa Grade 500C high yield coil is hot spooled directly from the mill, so the tendancy for twisting when decoiled is greatly reduced, enabling less power to be used by the bending machines, reduced wear on the rolls and greatly reduced out of plane bending.

Bar geometry and rolling marks

The rib pattern for Celsa Grade 500C high yield coil is the double angle rib pattern which complies with BS 4449:2005.

Get to know CELSA Group™