2.Alloy 4660: The best choice for corrosion resistance, ideal for the chemical industry.
2.Alloy 4660 is a high-nickel deformable austenitic stainless steel that is favored for its excellent resistance to H2SO4 and HNO3 and its mixed acid corrosion properties. The composition of the alloy is designed with carbon, silicon, manganese, nickel, chromium, molybdenum, iron, copper, niobium and other elements in mind, providing strong support when dealing with corrosive media. 2The composition content of alloy 4660 and its wide application in the chemical field.
Composition and Relationship:
2.The reasonable configuration of carbon, silicon, manganese and other elements in alloy 4660 makes it have excellent corrosion resistance. Among them, the nickel content is as high as 36 38%, which provides it with good corrosion resistance, especially in the chemical processing industry.
Corrosion resistance:
In concentrated sulfuric acid below 50 degrees, 24660 performs excellently, exhibiting excellent corrosion resistance. However, given that it is not recommended for use in high-temperature environments above 50 degrees Celsius, it is necessary to choose the use case carefully. For media such as wet phosphoric acid and HCl, as well as intergranular corrosion and pitting, 2The properties of alloy 4660 are relatively poor.
Physical Properties: 24660 has moderate density, high melting point, good specific heat capacity and thermal conductivity, and an elastic modulus of 200 MPa, which provides strong support for its stable operation under high temperature and high pressure conditions.
Processing and welding characteristics:
The hot forming temperature of the alloy is 970 1065 degrees, and the cold working is similar to chromium-nickel stainless steel. The heat treatment should be stabilized at 940 degrees, and the intermediate annealing temperature is higher than 1050 degrees, and the usual welding method is feasible. It should be noted that it is not suitable to perform molding operations at a sensitive temperature of 650 degrees for intergranular corrosion.
Wide range of applications:
In the fields of chemical processing industry, hot seawater and hydrometallurgy, 2Alloy 4660 is widely used in heat exchangers, pipes, valves, pumps and other equipment. It mainly treats hot H2SO4, chloride-containing solution, Na2SO3 and other environments, providing a reliable corrosion-resistant solution for chemical production.
Summary: 2Alloy 4660 is ideal for working with corrosive media due to its excellent corrosion resistance in the chemical industry. In high-temperature, corrosive environments, the alloy exhibits excellent performance, provides reliable material support for industrial production, and promotes technological progress and safe production in the chemical industry.