Technical Data Sheet – Alloy 1.4762
General information:
Alloy: 1.4762
Trade name: 1.4762, also known as 446 or Ferralium 446
Chemical composition: 26% chromium, 0.20% molybdenum, 0.025% nitrogen, 0.02% carbon, 0.75% silicon, 0.50% copper, balance iron
Mechanical properties:
Tensile strength: 550–750 MPa
Yield strength: ≥ 250 MPa
Elongation at break: ≥ 25%
Physical properties:
Density: 7.75 g/cm³
Melting point: 1450–1510°C
Thermal conductivity: 21.5 W/(m·K) at 100°C
Coefficient of thermal expansion: 10.5 × 10⁻⁶ K⁻¹ (20–100°C)
Electrical conductivity: 0.10–0.15 Ω·mm²/m
Corrosion resistance:
Alloy 1.4762 is characterized by excellent resistance to oxidizing and reducing conditions. It offers good resistance to corrosion caused by sulfide compounds and shows excellent oxidation resistance at elevated temperatures. The alloy is also resistant to corrosion caused by chloride ions.
Applications:
Alloy 1.4762 is used in various industrial sectors, including:High-temperature applications: The alloy is frequently used in furnace and heat exchanger systems that are exposed to high temperatures. It offers excellent resistance to oxidation and creep at elevated temperatures.
Chemical processing: Due to its high corrosion resistance to aggressive chemicals, particularly acids and sulfide compounds, the alloy is used in chemical processing plants.
Exhaust gas purification: Alloy 1.4762 is also used in exhaust gas purification systems where it must withstand high temperatures, chemical reactions, and corrosive environments.
Power generation: Due to its excellent resistance to oxidation and corrosion at elevated temperatures, the alloy is used in power generation applications, including power plants and gas turbines.
Note: This technical data sheet is for informational purposes only. Before using Alloy 1.4762, it is advisable to review the specific requirements of your application and, where necessary, seek expert advice.
