5N nickel is a type of steel plate used for ultra-low temperature pressure vessels, which belongs to the special heat treated 5% nickel alloy steel plate used for pressure vessels. This type of steel plate has high strength, high toughness, and excellent welding performance, and is commonly used in the manufacture of ultra-low temperature pressure vessels, pressure resistant shells, heat-resistant shells, and other equipment. The characteristics of 5Ni steel plate make it an ideal material for manufacturing high-precision and high-strength parts, especially in environments that require extreme low temperature and high pressure. In addition, the standard range and application of 5Ni steel plate further demonstrate its importance and wide application in specific industrial fields.