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XM-11 Stainless Steel Sheet, S21904 Stainless Steel Round Bar Supplier

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XM-11 stainless steel is a high-strength austenitic stainless steel known for its exceptional mechanical properties, corrosion resistance, and heat resistance. This article provides an in-depth analysis of XM-11 stainless steel, including its chemical composition, mechanical properties, applications, processing standards, as well as information on available forms such as plates, sheets, and round bars.

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  1. Chemical Composition: XM-11 stainless steel, also known as ASTM A240 Type XM-11 or UNS S21904, is primarily composed of the following elements:
  • Carbon (C): 0.03% maximum
  • Chromium (Cr): 21-23%
  • Nickel (Ni): 4.5-6.5%
  • Manganese (Mn): 2% maximum
  • Silicon (Si): 1% maximum
  • Nitrogen (N): 0.15-0.25%
  • Phosphorus (P): 0.04% maximum
  • Sulfur (S): 0.03% maximum
  • Copper (Cu): 1.5-3.5%
  1. Mechanical Properties: XM-11 stainless steel exhibits excellent mechanical properties, making it suitable for various applications. The key mechanical properties of XM-11 stainless steel are as follows:
  • Tensile Strength: 620-850 MPa (90-123 ksi)
  • Yield Strength: 310-690 MPa (45-100 ksi)
  • Elongation: 40-50%
  • Hardness: HRB 95 max
  1. Applications: XM-11 stainless steel finds diverse applications across several industries due to its unique combination of strength, corrosion resistance, and high-temperature capabilities. Some of the common applications include:
  • Heat exchangers and condensers
  • Pressure vessels and storage tanks
  • Chemical and petrochemical processing equipment
  • Power generation components
  • Pulp and paper industry equipment
  • Pharmaceutical and food processing machinery
  • Architectural applications
  1. Processing Standards: XM-11 stainless steel complies with various industry standards to ensure consistent quality and performance. The primary processing standards for XM-11 stainless steel include:
  • ASTM A240: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications.
  • ASME SA240: Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications.
  1. Available Forms: XM-11 stainless steel is available in different forms to suit specific application requirements. The most common forms include:
  • Plates: XM-11 stainless steel plates are available in various thicknesses ranging from a few millimeters to several inches. They are commonly used in pressure vessels and storage tanks.
  • Sheets: XM-11 stainless steel sheets are typically thinner than plates and find applications in architectural, chemical, and pharmaceutical industries.
  • Round Bars: XM-11 stainless steel round bars offer excellent corrosion resistance and are widely used in the construction of heat exchangers, condensers, and other high-temperature applications.

Conclusion: XM-11 stainless steel, with its impressive combination of mechanical properties, corrosion resistance, and high-temperature capabilities, is a versatile material suitable for numerous industries. Its chemical composition, which includes elements like chromium, nickel, and nitrogen, provides exceptional strength and durability. With adherence to industry processing standards, XM-11 stainless steel is available in various forms such as plates, sheets, and round bars to meet diverse application requirements. Whether it’s in the chemical, petrochemical, power generation, or food processing industries, XM-11 stainless steel offers reliable performance and longevity, making it a preferred choice for many applications.

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