ASTM A240 (UNS S32304) Stainless Steel Sheet
Top A240 (UNS S32304) Stainless Steel Sheet Manufacturer in China
ASTM A240 (UNS S32304) is the premier choice for applications requiring a superior combination of high strength and corrosion resistance. As a lean duplex stainless steel, its balanced austenitic-ferritic microstructure delivers mechanical strength nearly double that of standard 304-grade steel, allowing for significant weight savings. This advanced alloy provides excellent resistance to stress corrosion cracking, pitting, and crevice corrosion, making it a highly reliable and cost-effective solution for a wide range of industrial, structural, and commercial applications. It provides both outstanding performance and long-term durability that stands the test of time.
Discover high-quality A240 (UNS S32304) stainless sheet products here.
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Characteristics of A240 (UNS S32304) Stainless Steel
- High Mechanical Strength: Doubles the strength of 304L steel, enabling lighter, thinner designs without compromising durability.
- Enhanced Corrosion Resistance: Offers excellent resistance to chloride stress corrosion cracking (SCC), a significant advantage over standard austenitic grades.
- Superior Pitting Resistance: PREN 24-25 offers better pitting/crevice corrosion resistance than 304 stainless steel.
- Good Weldability: Easily welded with standard methods, its low thermal expansion minimizes distortion versus austenitic steels.
- Good Formability & Toughness: Strong yet formable – offers high strength with good ductility, though requires more forming force than austenitic grades.
- Cost-Effective Lean Duplex: Cost-saving duplex steel – delivers strength and corrosion resistance with less nickel than standard grades.
- Favorable Thermal Properties: It has a lower coefficient of thermal expansion and higher thermal conductivity than austenitic stainless steels.
- Broad Industrial Application: A versatile material ideal for a wide range of uses, including structural components, storage tanks, bridges, water heaters, and process equipment.
ASTM A240 (UNS S32304) Stainless Steel Sheet Technical Specifications
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.03 max |
| Chromium (Cr) | 21.5 - 24.5 |
| Nickel (Ni) | 3.0 - 5.5 |
| Manganese (Mn) | 2.5 max |
| Silicon (Si) | 1.0 max |
| Phosphorus (P) | 0.04 max |
| Sulfur (S) | 0.03 max |
| Molybdenum (Mo) | 0.05 - 0.60 |
| Nitrogen (N) | 0.05 - 0.20 |
| Copper (Cu) | 0.05 - 0.60 |
| Property | Value |
|---|---|
| Tensile Strength | 600 MPa min |
| Yield Strength (0.2% Offset) | 400 MPa min |
| Elongation | 25% min |
| Hardness (Brinell) | 290 max |
| Property | Value |
|---|---|
| Density | 7.8 g/cm³ |
| Modulus of Elasticity | 200 GPa |
| Thermal Conductivity | 17.0 W/m·K (at 20-100°C) |
| Mean Coefficient of Thermal Expansion | 13.0 μm/m°C (at 20-100°C) |
| Melting Point | 1410 - 1460 °C |
- UNS： S32304
- EN： 1.4362
- ASTM： A240
- ASME： SA-240
Common Applications of A240 (UNS S32304) Stainless Steel
Structural & Architectural
Chemical Processing & Storage
Water Treatment & Marine
Pulp & Paper Industry
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A240 (UNS S32304) Stainless Steel Sheet Customization
We tailor our services to your project’s exact needs, specially adapted for high-strength lean duplex stainless steel to ensure precision in critical applications.
- Custom Dimensions: We offer cut-to-size and shearing services to match your specific length and width needs. Our advanced processing allows for precise cuts, minimizing waste and preparing the material for your fabrication process.
- Thickness Range: Sheets and plates are available in a wide variety of thicknesses, typically ranging from 3 mm to 13 mm, to suit both structural and process equipment applications.
- Surface Finishing: Choose from multiple finishes suitable for industrial and structural use, including standard No. 1 (Hot-Rolled, Annealed, and Pickled) and cold-rolled finishes like 2D and 2 B.
- Processing Services: We offer value-added fabrication, including plasma and laser cutting, bending, and welding services specifically adapted for the high strength and properties of duplex stainless steel.
Contact our technical team to discuss your custom fabrication needs.
Contact Us
The success of your project depends on superior materials. We supply certified ASTM A240 (UNS S32304) duplex stainless steel sheets, ensuring high strength and reliability for your most demanding applications. We deliver a promise of unwavering quality and tailored solutions.
Ready to begin? Contact our expert team for a no-obligation quote and professional consultation.
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