General information:
Alloy: 1.4845, also known as AISI 310S or X8CrNi25-21
Type: Austenitic stainless steel
Main alloying elements: Chromium (25–28%), nickel (19–22%), balance iron
Mechanical properties:
Tensile strength: 515 MPa minimum
Yield strength: 205 MPa minimum
Modulus of elasticity: 200 GPa
Brinell hardness: 187 HBC
Chemical composition, in weight percent:
Chromium (Cr): 25–28%
Nickel (Ni): 19–22%
Carbon (C): max. 0.08%
Manganese (Mn): max. 2%
Silicon (Si): max. 1.5%
Phosphorus (P): max. 0.045%
Sulfur (S): max. 0.03%
Nitrogen (N): max. 0.1%
Iron (Fe): balance
Physical properties:
Density: 7.9 g/cm³Melting point: approx. 1390°C
Thermal conductivity: 15 W/(m·K)Coefficient of thermal expansion: 15.9 µm/m·K (20–100°C)
Corrosion resistance:
Alloy 1.4845 is characterized by high resistance to oxidizing and reducing atmospheres. It is resistant to many corrosive media such as water, steam, air, as well as weak acids and alkalis at room temperature. At higher temperatures, however, chromium carbides may form, which can impair corrosion resistance.
Applications:
Heat-resistant components in furnaces and combustion plants
Heat exchangers and boiler tubes in the chemical industry
Piping systems for food processing
Components for high-temperature gas cleaning
Vessels and equipment for the petrochemical industry
Piping systems for oil and gas production
Note: This technical data sheet is for informational purposes only and is based on the current state of knowledge up to September 2021. Please note that technical specifications may change over time. It is recommended to obtain current data sheets from manufacturers or technical specialists in order to receive the latest information.
