The choice of material for a cryogenic reactor is critical to its performance and service life. The following are common low-temperature reactor materials and their characteristics:
Stainless steel
SUS304 Stainless Steel
This is a stainless steel material with excellent corrosion resistance and weldability. Its main components are Cr, Ni and C, etc., which have good acid, alkali resistance and corrosion resistance, and are suitable for most laboratory reaction experiments.
SUS316 stainless steel
Compared with SUS304 stainless steel, it has more corrosion resistance and heat resistance, so it is suitable for some more severe reaction experiments, such as high-pressure reaction, high-temperature reaction, etc.
SUS321 stainless steel
between SUS304 and SUS316, it has good corrosion resistance, heat resistance and fatigue resistance, and is suitable for some experiments that require long-term reactions.
Chromium-nickel austenitic stainless steel
Usually used in the manufacture of reaction kettles, it has the characteristics of non-magnetic, plasticity, toughness, process performance and corrosion resistance. For example, OCr19Ni9 and OCr18Ni12Mo2 grades of stainless steel, which are equivalent to imported steel grades 304 and 316, respectively, have a wide temperature operating range (-196~600°C).
FRP
FRP material has excellent mechanical properties and corrosion resistance, and can resist the erosion of strong corrosive reagents. At the same time, it also has good insulation properties, so it has also been widely used in some experiments that require insulation.
Other Materials
In addition to stainless steel and fiberglass, there are also special materials that are also used to make cryogenic reactors to meet specific experimental or production needs. These materials often have specific physical and chemical properties, such as higher corrosion resistance, heat resistance, or strength.
When choosing the material of the cryogenic reactor, it is necessary to weigh it according to the actual needs of the experiment or production. For example, if the experiment involves highly corrosive reagents, it may be more appropriate to choose a material with excellent corrosion resistance, such as stainless steel or fiberglass. At the same time, factors such as the cost, maintenance, and longevity of the equipment need to be considered.
