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Stainless Steel - Grade 410L / 1.4003

Description

Stainless Steel Grade 410L/1.4003 is a low carbon martensitic stainless steel that offers a combination of corrosion resistance, weldability, and machinability. The low carbon content in 410L enhances its weldability and reduces the risk of hardening due to welding, making it a suitable choice for applications requiring moderate corrosion resistance and good mechanical properties.

Chemical Composition

  • Chromium (Cr): 11.5 - 13.5%
  • Nickel (Ni): ≤ 0.75%
  • Manganese (Mn): ≤ 1.0%
  • Silicon (Si): ≤ 1.0%
  • Carbon (C): ≤ 0.03%
  • Phosphorus (P): ≤ 0.040%
  • Sulfur (S): ≤ 0.030%
  • Iron (fe): Balance

    • Mechanical Properties (Annealed)

  • Tensile Strength: 415 - 585 MPa
  • Yield Strength: 205 MPa min
  • Elongation: 20% min
  • Hardness: 86 HRB max

    • Thermal & Physical Properties

  • Density:7.75 g/cm³
  • Melting Point: 1480 - 1530°C
  • Specific Heat: 460 J/kg•K at 20°C
  • Thermal Conductivity: 24.9 W/m•K at 100°C
  • Electrical Resistivity: 600 µΩ•cm at 20°C
  • Modulus of Elasticity: 200 GPa

    • Other Designations

  • UNS: S41003
  • EN: 1.4003
  • JIS: SUS410L
  • ASTM: A240, A276

    • Fabrication and Heat Treatment

  • Welding: Excellent weldability due to low carbon content. Preheating and post-weld heat treatment are usually not required.
  • Machining: Machinable with standard techniques. Lower carbon content provides better machinability than higher carbon martensitic grades.
  • Forming: Can be formed using standard methods.
  • Heat Treatment:: Can be hardened by heat treatment. Typical treatment involves heating to 700-800°C, followed by air cooling.

    • Applications

  • Automotive: Exhaust systems, manifolds, and other components.
  • Construction: Structural components, particularly in environments where moderate corrosion resistance is required.
  • Petrochemical: Storage tanks and processing equipment.
  • Industrial: Pumps, valves, and other components requiring moderate corrosion resistance and good mechanical properties.

    • Supplied Forms

  • Bars
  • Wires
  • Coil
  • Pipes
  • Strips

    • Features

  • Corrosion Resistance: Moderate resistance to corrosion in mildly corrosive environments.
  • Weldability: Enhanced weldability due to low carbon content, reducing the risk of hardening.
  • Machinability: Easier to machine than higher carbon martensitic grades.
  • Mechanical Strength: Good mechanical properties, suitable for structural and industrial applications.
  • Versatility: Can be used in a variety of applications, offering a good balance of corrosion resistance, mechanical properties, and fabricability.
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