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Different Sizes Of Rebar for Construction - Mill Direct
China
Supplier's customization ability
- Drawing-based customization
- Sample-based customization
- Full customization
Minimum order quantity: 1 ton
Shipping total: To be negotiated
- Lead time:
- confirmed with the quotation
- Packaging:
- standard export packing
- Samples:
- available on request
Product details
Technical Specifications of Different Sizes of Rebar for Construction
| Property | Parameter | Description |
|---|---|---|
| Product Name | Deformed Steel Rebar (Reinforcing Bar) | Hot-rolled ribbed steel bar used for concrete reinforcement in construction |
| Material Grade | HRB400 / HRB500 / SD390 / SD490 / Grade 40 / Grade 60 | International equivalents: BS4449 B500B, ASTM A615 Gr.60, EN 10080 B500, JIS G3112 SD390 |
| Standard Compliance | ASTM A615 / A706, EN 10080, BS 4449, JIS G3112, GB/T 1499.2 | Meets major international construction and structural engineering standards |
| Chemical Composition (C) | ≤ 0.25% | Low carbon content ensures weldability and ductility |
| Chemical Composition (Mn) | 0.60% – 1.60% | Manganese improves strength and hardenability |
| Chemical Composition (P & S) | P ≤ 0.045%, S ≤ 0.045% | Controlled phosphorus and sulfur for improved toughness |
| Chemical Composition (Si) | 0.10% – 0.80% | Silicon acts as deoxidizer and strengthening agent |
| Tensile Strength | 570 – 750 MPa | Per ASTM A615 Gr.60: min 620 MPa; EN 10080 B500B: min 540 MPa |
| Yield Strength | 400 – 500 MPa | HRB400: ≥ 400 MPa; HRB500: ≥ 500 MPa; ASTM Gr.60: ≥ 420 MPa |
| Elongation | ≥ 14% – 20% | Minimum elongation ensures ductility under seismic and dynamic loads |
| Bar Diameter (Size Range) | 6 mm – 50 mm (No.3 – No.18 in imperial) | Common sizes: Φ6, Φ8, Φ10, Φ12, Φ14, Φ16, Φ20, Φ25, Φ32, Φ40, Φ50 mm |
| Length | 6 m, 9 m, 12 m (customizable) | Standard mill lengths; cut-to-length service available upon request |
| Surface Finish | Hot-rolled deformed (ribbed) surface | Transverse and longitudinal ribs enhance mechanical bond with concrete |
| Application | Foundations, columns, beams, slabs, bridges, tunnels, retaining walls | Suitable for residential, commercial, industrial, and infrastructure construction |
| Certification | ISO 9001, CE Marking, Mill Test Certificate (MTC) per EN 10204 3.1 | Third-party inspection available: SGS, BV, TÜV upon request |
| Packaging | Bundled in 2–5 MT per bundle, steel-strapped | Seaworthy export packing; bare bundle or with waterproof wrapping available |
| MOQ | 25 MT per size | Mixed container orders accepted; full container load (FCL) preferred for export |
Different Sizes Of Rebar for Construction - Mill Direct
Understanding the different sizes of rebar for construction is essential for engineers, contractors, and procurement specialists who demand structural integrity and long-term durability. Reinforcing bar — commonly known as rebar — serves as the tensile backbone embedded within concrete structures, compensating for concrete's inherent weakness under tension. From residential foundations to large-scale infrastructure projects such as bridges, dams, and high-rise buildings, selecting the correct rebar diameter and grade directly determines load-bearing capacity and service life. As a mill-direct supplier, we offer a comprehensive range of rebar sizes conforming to ASTM A615, BS 4449, and GB/T 1499.2 standards, ensuring that every project — regardless of scale or complexity — receives precisely the specification required. Our inventory spans standard deformed bars from #3 (9.5 mm) through #18 (57.3 mm), with custom lengths and coil options available on request.
What Are Different Sizes of Rebar for Construction?
Different sizes of rebar for construction refer to the standardized range of deformed or plain steel bars, classified by nominal diameter, cross-sectional area, and unit weight. Each size designation — whether expressed as imperial bar numbers (#3 through #18) or metric diameters (6 mm through 50 mm) — corresponds to specific mechanical properties and structural applications. Rebar is typically manufactured from carbon steel or low-alloy steel, with deformed surface ribs that enhance mechanical bonding with concrete, preventing slippage under load.
Different Sizes of Rebar for Construction — Technical Specifications
Our mill-direct rebar inventory covers the full dimensional spectrum demanded by modern construction. Each size is produced with a minimum yield strength of 420 MPa (Grade 60 per ASTM A615) and a minimum tensile strength of 620 MPa, with elongation no less than 9% in an 8-inch gauge length. Surface deformation height and spacing comply with ASTM A615 Table 1 requirements, ensuring consistent bond performance across all diameters.
| Bar Size (Imperial) | Nominal Diameter (mm) | Cross-Sectional Area (mm²) | Unit Weight (kg/m) | Typical Application |
|---|---|---|---|---|
| #3 | 9.5 | 71 | 0.560 | Slabs, sidewalks, light walls |
| #4 | 12.7 | 129 | 0.994 | Residential foundations, columns |
| #5 | 15.9 | 200 | 1.552 | Beams, retaining walls |
| #6 | 19.1 | 284 | 2.235 | Bridge decks, heavy slabs |
| #7 | 22.2 | 387 | 3.042 | Columns, piers |
| #8 | 25.4 | 510 | 3.973 | High-rise structural columns |
| #10 | 32.3 | 819 | 6.404 | Large-span bridges, dams |
| #14 | 43.0 | 1452 | 11.380 | Heavy infrastructure, caissons |
| #18 | 57.3 | 2581 | 20.240 | Transfer beams, nuclear structures |
All bars are available in standard mill lengths of 6 m, 9 m, and 12 m, with custom cut-to-length processing offered for large-volume orders. Epoxy-coated and galvanized variants are stocked for corrosive or marine environments, delivering outstanding anti-corrosion properties with a zinc coating weight of ≥305 g/m² per ASTM A767.
Get a Competitive Quote for Different Sizes of Rebar for Construction
Ready to source the right rebar sizes for your next project at mill-direct rates? Our technical team evaluates your structural drawings and load requirements to recommend the optimal grade-diameter combination, reducing material waste and procurement costs. Contact us today for a tailored quotation backed by certified mill test reports.
- 24/7 customer support available
- Free samples for quality evaluation
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Contact us today to get your free quote within 24 hours!
