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B500A/B500B/B500C Rebar
B500A, B500B, and B500C are three reinforcement bar grades defined by the European standard EN 10080 (adopted by British Standard BS 4449 and many national standards). The key difference between these grades lies in their ductility and toughness, not in their strength. All grades have a nominal yield strength (Re) of 500 MPa, but they differ in requirements for fracture elongation, tensile-to-yield strength ratio, and fatigue performance to accommodate different structural and seismic demands.
Keywords:
B500A/B500B/B500C Rebar
Category:
Steel Rebar
B500A/B500B/B500C Rebar Description
B500A, B500B, and B500C are three reinforcement bar grades defined by the European standard EN 10080 (adopted by British Standard BS 4449 and many national standards). The key difference between these grades lies in their ductility and toughness, not in their strength. All grades have a nominal yield strength (Re) of 500 MPa, but they differ in requirements for fracture elongation, tensile-to-yield strength ratio, and fatigue performance to accommodate different structural and seismic demands.
Grade Selection Guide
B500A: Lowest ductility. Typically used for welded fabric or non-critical, non-structural components. Due to its performance limitations, it is not recommended for primary load-bearing members.
B500B: Standard, all-purpose grade. Offers good ductility and weldability, making it suitable for the vast majority of reinforced concrete structures. It is the preferred choice for beams, slabs, columns, foundations, and other structural elements.
B500C: High ductility grade. Provides the best plastic deformation capacity and seismic performance. It is intended for critical structures in high seismic zones (e.g., beam-column joints in moment frames, boundary elements of shear walls), structures subject to dynamic loads, or those requiring high deformation capacity. Its cost is typically higher than B500B.
Key Recommendation
For most conventional building projects, B500B reinforcement is sufficient and offers the best economic value. Engineers should prioritize B500B and only specify B500C when mandated by codes or for structures with special seismic or ductility requirements.
Technical Parameter Comparison Table
|
Parameter |
B500A |
B500B |
B500C |
|
Yield Strength Re (MPa) |
≥ 500 |
≥ 500 |
≥ 500 |
|
Actual/Nominal Yield Strength Ratio (Re,act/Re,nom) |
≤ 1.25 |
≤ 1.25 |
≤ 1.25 |
|
Min. Tensile/Yield Ratio (Rm/Re) |
≥ 1.05 |
≥ 1.05 |
≥ 1.15 and < 1.35 |
|
Min. Fracture Elongation Agt (%) |
≥ 3.0 |
≥ 5.0 |
≥ 7.5 |
|
Min. Fatigue Strength 2σad (MPa) |
≥ 100 |
d ≤ 28mm: ≥175 |
d ≤ 28mm: ≥175 |
|
Common Delivery Forms |
Coil, Bar, Welded Fabric, Lattice Girder |
Coil, Bar, Welded Fabric |
Bar (also available in coil for some producers) |
|
Typical Surface |
Smooth, Indented, Ribbed |
Indented, Ribbed |
Ribbed |
|
Nominal Diameter Range (mm) |
4 - 16 |
6 - 50 |
6 - 50 |
|
Dimensional Tolerance |
+/- 4.5% |
+/- 4.5% |
+/- 4.5% |
|
Chemical Composition |
C < 0.22%, Ceq < 0.50% |
C < 0.22%, Ceq < 0.50% |
C < 0.22%, Ceq < 0.50% |
Note: 'd' denotes bar diameter. Parameters are based on standards such as EN 10080
Scope of Application
Widely used in houses, bridges, roads, especially railways and other civil engineering.
Packing and delivery
We have been deeply involved in the fields of infrastructure construction and underground engineering for a long time. Our core products are grouting pipe series and advanced small conduits. We are an indispensable supplier of key materials in tunnels, subways, mines, water conservancy and various construction projects.
Packaging and shipping
FAQ
Q: How long is your delivery time?
A: Generally, if it is in stock, it will take 5-10 days, if it is not in stock, it will take 30 days.
Q: Can we send samples?
A: We can provide samples for the products you are interested in.
Q: How do we ensure quality?
A: We conduct pre-production sample testing, accept third-party or customer inspection, and conduct final inspection before shipment.
Q: How do you ensure long-term relationships?
A: We maintain high quality and competitive prices to benefit our customers. Every client is treated as a friend, we do business with sincerity and strive to build lasting relationships, regardless of origin.
Contact Us
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Liaocheng, Shandong, China
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Shandong Jiechuang Metal Products Co., Ltd. is a technology-driven enterprise specializing in the production and sales of metal products.
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