Introduction to British Standard B500B BS 4449:2005 Threaded Steel Reinforcement Standard
Hit：322026-04-21 09:11:17
Introduction to British Standard B500B BS 4449:2005 Threaded Steel Reinforcement Standard
B500B steel bars follow the British standard BS 4449:2005 and are a type of hot-rolled ribbed steel bar that is widely used in building structural engineering, especially for projects that require high seismic performance.
The meaning of the steel bar grade is as follows:
B: Representing Hot Rolled Ribbed Bar;
500: indicates that its yield strength standard value is 500MPa;
B: The suffix letter represents the Ductility Class, with Class B having good ductility and seismic performance, suitable for general structures and seismic frame nodes.
Main technical parameters (based on BS 4449:2005 standard):
Yield strength (ReL): ≥ 500 MPa
Tensile strength (Rm): ≥ 630 MPa
Strong yield ratio (Rm/ReL): ≥ 1.25, ensuring that the structure has sufficient safety reserve in case of overload
Maximum force total elongation (Agt): ≥ 7.5%, reflecting good plastic deformation ability and conducive to seismic energy dissipation
Cold bending performance: 180 ° cold bending without cracks, the bending center diameter is determined based on the diameter of the threaded steel bar and the steel bar
Size range: Common steel bar diameters range from 6mm to 50mm, suitable for various engineering needs
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