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ASTM Steel Bars for Construction - Mill Direct Supplier
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 ASTM Standard Steel Bars for Construction
| Property | Parameter | Description |
|---|---|---|
| Product Name | ASTM Standard Steel Bars for Construction | Deformed and plain steel reinforcing bars used in concrete structures |
| Material Grade | Grade 40 / Grade 60 / Grade 75 (ASTM A615); Equivalent: HRB400 / HRB500 (GB), B500B (EN) | Grade 60 is most widely used in structural reinforcement applications |
| Standard Compliance | ASTM A615 / ASTM A706 / ASTM A996 | A615: Carbon steel; A706: Low-alloy steel; A996: Rail/axle steel bars |
| Chemical Composition (C) | ≤ 0.30% (Grade 60, ASTM A615) | Carbon content controls hardness and weldability |
| Chemical Composition (Mn) | ≤ 1.50% | Manganese enhances tensile strength and toughness |
| Chemical Composition (P) | ≤ 0.060% | Phosphorus limited to prevent brittleness |
| Chemical Composition (S) | ≤ 0.060% | Sulfur limited to ensure ductility and weldability |
| Tensile Strength | ≥ 620 MPa (90 ksi) for Grade 60 per ASTM A615 | Minimum tensile strength ensuring structural load-bearing capacity |
| Yield Strength | ≥ 420 MPa (60 ksi) for Grade 60; ≥ 280 MPa (40 ksi) for Grade 40 | Yield point defining elastic limit under construction loads |
| Elongation | ≥ 9% (Grade 60, #8 bar and larger); ≥ 7% (smaller sizes) | Measured over 8-inch gauge length per ASTM A615 requirements |
| Bar Size Range | #3 to #18 (9.5 mm – 57.3 mm diameter) | Standard ASTM bar designations; custom lengths available up to 12 m |
| Length | 6 m / 9 m / 12 m (standard); custom cutting available | Mill lengths or cut-to-order per project specification |
| Surface Finish | Deformed (ribbed) or Plain (smooth) | Deformed bars provide superior bond strength with concrete |
| Application | Reinforced concrete beams, columns, slabs, foundations, bridges, tunnels | Suitable for seismic zones when ASTM A706 low-alloy grade is specified |
| Certification | Mill Test Report (MTR), ISO 9001, AISC, ACI 318 compliance | Third-party inspection and heat traceability documentation available |
| Packaging | Bundled in 2–5 MT bundles, steel-strapped; seaworthy packing for export | Bundles labeled with grade, heat number, and standard marking |
| MOQ | 25 MT per order | Mixed grades and sizes accepted within minimum order quantity |
ASTM Steel Bars for Construction - Mill Direct Supplier
ASTM standard steel bars for construction serve as the structural backbone of modern infrastructure projects worldwide, from high-rise buildings and bridges to industrial facilities and residential foundations. Manufactured in strict compliance with ASTM International specifications—including ASTM A615, ASTM A706, and ASTM A36—these bars deliver the dimensional precision, mechanical consistency, and load-bearing reliability that engineers demand. As a mill-direct supplier, we eliminate intermediary markups and offer cost-effective pricing without compromising on quality. Our ASTM standard steel bars for construction undergo rigorous third-party inspection, ensuring every shipment meets tensile, yield, and elongation benchmarks before leaving the facility. Whether your project requires Grade 40, Grade 60, or Grade 80 deformed reinforcing bars, or structural round and flat bars for fabrication, our extensive inventory and flexible production capacity allow us to fulfill orders of any scale with consistent lead times and documented material certifications.
What is ASTM Standard Steel Bars for Construction?
ASTM standard steel bars for construction are carbon or low-alloy steel products produced and tested according to specifications set by ASTM International. They include deformed reinforcing bars (rebar), plain round bars, flat bars, and square bars used to reinforce concrete structures or fabricate load-bearing assemblies. Each grade is defined by minimum yield strength—Grade 60 bars, for instance, require a minimum yield strength of 420 MPa and a minimum tensile strength of 620 MPa per ASTM A615.
ASTM Standard Steel Bars for Construction Manufacturing Process
Production begins with electric arc furnace (EAF) steelmaking, where scrap steel or direct-reduced iron is melted and refined to achieve precise chemical compositions—typically 0.30%–0.43% carbon for Grade 60 rebar per ASTM A615. The molten steel is continuously cast into billets, then hot-rolled through a series of rolling stands at temperatures exceeding 1,100°C to form the final bar profile. Deformed bars receive surface ribs during rolling to enhance mechanical bonding with concrete. Final products are cut to standard lengths of 6 m, 9 m, or 12 m, bundled, tagged, and subjected to mechanical testing—including tensile, bend, and re-bend tests—before release.
ASTM Standard Steel Bars for Construction Technical Specifications
Our ASTM standard steel bars for construction cover a broad range of grades and sizes to meet diverse project requirements:
- Standard: ASTM A615 / A615M, ASTM A706 / A706M, ASTM A36 / A36M
- Bar Sizes: #3 (9.5 mm) through #18 (57.3 mm) deformed rebar; 6 mm–150 mm round and flat bars
- Yield Strength: Grade 40 – 280 MPa min; Grade 60 – 420 MPa min; Grade 80 – 550 MPa min
- Tensile Strength: Grade 60 – 620 MPa min per ASTM A615; A706 Grade 60 – 550 MPa min
- Elongation: 9%–12% in 200 mm gauge length depending on bar size and grade
- Density: 7.85 g/cm³ at 20°C
- Length: 6 m, 9 m, 12 m standard; custom lengths available upon request
- Surface Condition: Deformed (ribbed) or plain; mill scale or pickled and oiled finish
- Mill Test Certificate: EN 10204 3.1 / 3.2 available
Get a Competitive Quote for ASTM Steel Bars for Construction
Partner with a trusted mill-direct supplier to secure the best value on ASTM standard steel bars for construction. We offer transparent mill-direct rates, fast order processing, and full material traceability from melt to delivery—ensuring your project stays on schedule and within budget. Reach out to our technical sales team today.
- 24/7 customer support available
- Free samples for quality evaluation
- Competitive pricing for bulk orders
- Professional technical consultation
Contact us today to get your free quote within 24 hours!
