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ASTM A240 (UNS S32101) Stainless Steel Sheet

Leading A240 Stainless Steel Sheet Manufacturer in China

ASTM A240 (UNS S32101) is the premier choice for applications requiring a superior combination of high strength and corrosion resistance. As a cost-effective lean duplex stainless steel, its balanced microstructure of austenite and ferrite delivers enhanced mechanical properties, often allowing for thinner gauges and significant weight savings compared to conventional austenitic grades. This versatile and durable material offers a reliable, high-performance solution for a wide range of structural, industrial, and processing projects, providing excellent resistance to stress corrosion cracking and ensuring long-term value.

Discover high-quality A240 stainless sheet products here.

ASTM A240 (UNS S32101) Stainless Steel Sheet
ASTM A240 (UNS S32101) Stainless Steel Sheet
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    Characteristics of A240 Stainless Steel

  • Superior Weldability: The material’s composition ensures excellent weldability, making it suitable for various welding techniques and applications.
  • Enhanced Corrosion Resistance: Offers outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking, even in harsh environments.
  • Excellent Formability: This stainless steel can be easily formed into complex shapes without compromising its structural integrity.
  • High-Temperature Performance: Maintains strength and oxidation resistance at elevated temperatures, making it ideal for heat-intensive applications.
  • Hygienic & Non-Reactive Surface: Its smooth, non-porous surface is easy to clean and resists bacterial growth, making it perfect for food and medical industries.
  • Balanced Strength & Ductility: Combines high tensile strength with good ductility, ensuring durability and flexibility in demanding applications.
  • Cost-Effective Solution: Provides a long service life with minimal maintenance, offering excellent value for money over time.
  • Aesthetic Appeal: Features a sleek, modern finish that enhances the visual appeal of architectural and decorative projects.

ASTM A240 (UNS S32101) Stainless Steel Sheet Technical Specifications

ElementContent (%)
Carbon (C)0.04 max
Chromium (Cr)21.0 - 22.0
Nickel (Ni)1.35 - 1.70
Manganese (Mn)4.0 - 6.0
Silicon (Si)1.00 max
Phosphorus (P)0.040 max
Sulfur (S)0.030 max
Molybdenum (Mo)0.10 - 0.80
Nitrogen (N)0.20 - 0.25
Copper (Cu)0.10 - 0.80
PropertyMinimum Value
Tensile Strength650 MPa (94 ksi)
Yield Strength (0.2% Offset)450 MPa (65 ksi)
Elongation (in 50mm)30%
Hardness (Brinell)290 max
Hardness (Rockwell C)27 max
PropertyValue
Density7800 kg/m ³ (0.282 lb/in³)
Modulus of Elasticity200 GPa (29.0 x 10⁶ psi)
Thermal Conductivity15 W/m·K at 100°C
Specific Heat500 J/kg·K (0.12 Btu/lb/°F) at 0-100°C
Electrical Resistivity0.80 µΩ·m
Poisson's Ratio0.3
  • UNS: S32101
  • EN (Europe): 1.4162
  • ASTM: A240, A276, A479
  • ASME: SA-240

Common Applications of A240 Stainless Steel

Structural & Architectural Applications

It is used for bridges, flood gates, and building reinforcements, offering long-term durability and resistance to atmospheric corrosion.

Process & Storage Tanks

A reliable choice for constructing storage tanks for a variety of substances, including wine, palm oil, biofuels, and potable water.

Water & Wastewater Treatment

Used in various components for municipal and industrial water systems, including desalination plants, piping, and sewage handling equipment.

Pulp & Paper Industry

Its resistance to both general corrosion and erosion corrosion is beneficial—a durable material for equipment like bleaching reactors, digesters, and washers.
ASTM A240 (UNS S32101) Stainless Steel Sheet
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    A240 Stainless Steel Sheet Customization

In addition to standard stock, we offer comprehensive processing services to ensure products that meet your exact project requirements. Our capabilities are designed to handle the unique properties of lean duplex stainless steel, providing high-quality results for demanding applications.

  • Custom Dimensions: We offer cut-to-size and shearing services to match your specific length and width needs. Our facilities can provide custom dimensions and lengths tailored to your particular project requirements.
  • Thickness Range: Sheets and plates are available in a wide variety of thicknesses to suit both light and heavy-duty applications, with cold-rolled options from 0.5 mm and hot-rolled plates available up to 100 mm.
  • Surface Finishing: Choose from multiple finishes to meet your functional or aesthetic requirements, including standard 2B, 2D, No. 1, and No. 4 brushed finishes.
  • Processing Services: We offer value-added fabrication, including precision plasma and laser cutting, as well as forming and welding services tailored to the high-strength characteristics of duplex stainless steel.

Contact our technical team to discuss your custom fabrication needs.

Contact Us

Your project’s success demands materials with superior strength and corrosion resistance. We supply certified ASTM A240 (UNS S32101) lean duplex stainless steel sheets that meet rigorous industry standards, ensuring confidence in your application’s performance.

Ready to begin? Contact our expert team for a detailed, no-obligation quote and a tailored solution for your most demanding projects.

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