Stainless Steel X2CrNiN18-7, also known as 301Ln, is a popular grade within the austenitic stainless steel family, celebrated for its unique combination of features and properties. This grade offers remarkable corrosion resistance, making it suitable for a wide range of applications. Its chemical composition includes a significant amount of nickel (around 8-10%) and chromium (around 16-18%), which contribute to its excellent corrosion resistance, even in aggressive environments such as marine or chemical processing.
Stainless Steel X2CrNiN18-7 comes in various forms, including sheets, coils, and bars, allowing for versatility in fabrication and design. Its austenitic structure ensures that it remains non-magnetic and highly formable, making it suitable for various shaping processes, including cold working and deep drawing. Additionally, its high tensile strength and moderate yield strength make it a preferred choice for applications demanding both strength and formability.
In terms of heat treatment, Stainless Steel X2CrNiN18-7 is generally non-hardenable by heat treatment alone. However, it can be strengthened through cold working processes, such as cold rolling or cold drawing, which increase its hardness and strength. This grade offers excellent machinability, but care must be taken to ensure tools are properly maintained and cutting speeds are adjusted accordingly.
When it comes to heat resistance, Stainless Steel X2CrNiN18-7 performs well in moderately elevated temperatures, making it suitable for applications in various industries. Its resistance to oxidation is good at temperatures up to 850°C (1562°F). However, for higher-temperature applications, other stainless steel grades with higher nickel and chromium content may be more suitable.
The standout feature of Stainless Steel X2CrNiN18-7 is its exceptional corrosion resistance. It is highly resistant to corrosion from chemicals, acids, and saltwater, making it a favored material in applications where exposure to corrosive environments is common. This includes use in chemical processing equipment, food processing, automotive components, and architectural structures.
|max 0.03||max 1||max 2||6 – 8||max 0.045||max 0.015||16.5 – 18.5||0.1 – 0.2|
|Rm – Tensile strength (MPa) (+A)||Rp0.2 0.2% proof strength (MPa) (+A)||KV – Impact energy (J) transverse, (+A)||KV – Impact energy (J) longitud., (+A)||A – Min. elongation at fracture (%) (+A)|