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Duplex S32304 Stainless Steel Rebar with Pickling Surface and Diameter 10-50mm for Concrete Structures
Product Details
| Model NO. | S32304 | Shape | Round |
|---|---|---|---|
| Technique | Hot Rolled | Surface Treatment | Pickling |
| Length | 6m 12m | Diameter Range | φ8mm - φ50mm |
| Steel Grade | 304 / 316L / 321 / 2205 / 2304 | Tensile Strength | 87 Ksi (600 MPa) |
| Yield Strength | 58 Ksi (400 MPa) | Elongation | 25% In 50mm |
| Hardness Brinell | 293 MAX | Hardness Rockwell | 31 MAX |
| Chromium Content | 21.5 - 24.5% | Nickel Content | 3.0 - 3.5% |
| Nitrogen Content | 0.05 - 2.0% | ||
| Highlight | Duplex S32304 Rebar,Diameter 10-50mm Rebar,Pickling Surface Rebar |
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Product Description
Duplex S32304 / Alloy 2304 Stainless Steel Rebar for Concrete Structure
Product Specifications
| Product Name | Stainless Steel Rebar |
| Diameter Range | φ8mm - φ50mm |
| Length | 6.1m/pcs or custom cutting available |
| Surface Finish | Pickling finishing, bright finishing |
| Steel Grade | 304 / 316L / 321 / 2205 / 2304, etc. |
| Standard | ASTM A955 (GB DIN EN available) |
| Service | Cutting |
| Other Shapes | Square, Flat, Hexagonal, Round, etc. |
| Loading Port | Shanghai Port |
| MOQ | 500 kgs |
About Duplex 2304 Stainless Steel Rebar
Stainless steel is categorized into martensitic, ferritic, austenitic, duplex stainless steel, and precipitation hardening stainless steel. Among these, duplex stainless steel is the most suitable for concrete structures. Duplex stainless steel contains both ferritic and austenitic phases, offering exceptional mechanical properties and resistance to chloride stress corrosion.
Over the past decade, advancements in duplex stainless steel smelting technology have reduced costs while improving performance, making stainless steel reinforcement increasingly viable for construction applications.
Common duplex stainless steel grades include 2205 and 2304, with 2304 being the most widely used for concrete structures. Containing 23% chromium and 4% nickel, 2304 forms a self-healing chromium-rich oxide film that ensures strong corrosion resistance. Its yield strength reaches 600MPa after processing, with excellent performance in elongation and elastic modulus. Additionally, 2304 is more cost-effective than 2205 and 316, offering better lifecycle cost efficiency while reducing dependency on nickel and molybdenum resources.
Composition of 2304 Stainless Steel
| Element | Content (%) |
|---|---|
| C | 0.03 max |
| Cr | 21.5 min - 24.5 max |
| Fe | Balance |
| Mn | 2.5 max |
| Si | 1.0 max |
| S | 0.03 max |
| P | 0.04 max |
| Ni | 3.0 min - 3.5 max |
| Cu | 0.05 min - 2.0 max |
| N | 0.05 min - 2.0 max |
Mechanical Properties of 2304 Stainless Steel
| Property | Value |
|---|---|
| Tensile Strength min | 87 ksi (600 MPa) |
| Yield Strength (0.2% offset) min | 58 ksi (400 MPa) |
| Elongation (% in 50mm) min | 25 |
| Hardness (Brinell) MAX | 293 |
| Hardness (Rockwell B) MAX | 31 |
Benefits of Duplex 2304 Stainless Steel Rebar
- Superior corrosion resistance with self-healing chromium oxide film
- High yield strength of 600MPa with excellent elongation properties
- More cost-effective than traditional 316 and 2205 stainless steel grades
- Service life exceeding 120 years in appropriate applications
- Reduces maintenance costs and eliminates reconstruction expenses
- Minimizes need for additional anti-corrosion measures
- Strategic use in key structural components increases total project cost by only ~2%
- Significantly reduces lifecycle costs while ensuring structural integrity
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