N08020 Nickel Alloy Overview

N08020 nickel alloy contains nickel, chromium and other elements, high temperature resistance of 600℃, strong corrosion resistance, high mechanical properties and good processing performance. It is used in aerospace, petrochemical, marine engineering, electric power, nuclear energy, pharmaceuticals, food processing and medical equipment.

First, composition

N08020 nickel alloy is mainly composed of nickel, chromium, molybdenum, copper and other elements, among which the nickel content is relatively high (about 34%), the chromium content is about 20%, and it also contains a small amount of carbon, manganese, silicon, phosphorus and other elements. The ratio of elements such as nickel and chromium has an important influence on the performance of the alloy. The presence of chromium can increase the corrosion resistance of the alloy, and nickel helps to improve the heat resistance and other properties.

Second, performance characteristics

High temperature resistance:

 It can maintain stable mechanical and chemical properties at higher temperatures, and the maximum operating temperature can reach 600℃. It is widely used in high temperature environments such as chemical, petroleum, aerospace and other fields. It has excellent high temperature resistance and oxidation resistance, and can withstand harsh working environments under high temperature and high pressure conditions. It can withstand extremely high temperatures and pressures and maintain stable performance. For example, it is used in the aerospace field for the manufacture of high-temperature components such as jet engines, turbine blades, and combustion chambers. In the petrochemical industry, it is used to manufacture chemical reactors, petroleum cracking heating furnaces, high-temperature pipelines and other equipment.

Corrosion resistance:

Acid corrosion resistance: It exhibits excellent corrosion resistance in acidic media such as sulfuric acid, nitrates, and hydrofluoric acid, and has first-class stability in strong corrosive media such as nitric acid and sulfuric acid. It is especially suitable for equipment that produces and stores strong corrosive media such as concentrated sulfuric acid, sulfates, and fluorides. It can be used to manufacture equipment parts that work in strong acid environments, such as equipment that refines, stores and processes acidic media in the petrochemical field, and equipment that produces and stores strong corrosive media in the fields of pharmaceuticals and food processing.

Alkaline corrosion resistance: It can withstand corrosion from alkaline media such as sodium hydroxide and potassium hydroxide.

Other corrosion resistance: It can also withstand corrosion in a variety of complex environments such as seawater and salt spray. It has good resistance to marine water corrosion in the field of marine engineering and is suitable for manufacturing marine mining equipment and submarine pipelines. The chromium element in its microstructure can form an oxide film to prevent further corrosion, and the nickel element can also enhance corrosion resistance.

Mechanical properties: 

It has high mechanical strength, plasticity, and toughness. It has high strength and hardness, can withstand certain pressure and wear, and has good plasticity and toughness. It can maintain stable performance when subjected to large stress and strain, and can further optimize the microstructure during heat treatment to improve mechanical properties. It also has excellent resistance to stress corrosion cracking, has good mechanical properties under high temperature and high pressure conditions, and can maintain high machinability and good formability within a large stress range.

Processing performance:

 It has good cold processing performance and hot processing performance. It can prepare parts of various shapes through forging, hot rolling, cold rolling, cold heading and other processing methods. It can be processed and formed by heat treatment and cold processing. It is also easy to perform mechanical processing and cold forming. However, appropriate preheating and cooling measures need to be taken during the processing to avoid affecting its performance. When welding, corresponding welding materials and processes need to be used to ensure the quality of the weld.

Third, microstructure

The microstructure of N08020 alloy is very fine, consisting of neatly arranged austenite crystals. This microstructure gives the alloy good plasticity and toughness, and the microstructure can be further optimized during heat treatment to improve mechanical properties.

Fourth, application areas

Aerospace field: mainly used to manufacture aircraft engine turbine blades, turbine radiators and combustion chambers. These parts operate in high-speed, high-temperature, high-pressure and highly corrosive working environments. N08020 alloy meets manufacturing requirements with its excellent properties such as high strength, high corrosion resistance and fatigue resistance, and has become one of the indispensable important materials in the aviation industry.

Petrochemical field: commonly used to manufacture equipment such as reactors, regeneration towers and exchangers for corrosive chemicals, and also used to refine, store and treat acidic media. It can withstand the erosion of high-concentration and high-temperature acidic media to ensure the long-term stable operation of the equipment. It is widely used in the high-temperature and high-pressure applications in the petrochemical industry, such as reactors, steam generators, heat exchangers, storage tanks, pumps and valves. It is also used to manufacture chemical reactors, petroleum cracking heating furnaces, high-temperature pipelines and other equipment.

Marine engineering field: It has good resistance to marine water corrosion and is suitable for manufacturing marine mining equipment and submarine pipelines, marine platforms, ship pipelines and marine equipment. In offshore oil platforms, it can be used to make drilling machinery and equipment, boilers, pipelines and pipe fittings. In the field of seawater desalination and treatment, it can be used for evaporators and membrane separators. Its stability and corrosion resistance provide support for the long-term reliability of marine engineering.

Power field: It is used to manufacture high-temperature steam pipelines and heat exchangers to ensure the stable operation of the power system.

Nuclear energy industry: It is widely used in the manufacture of key components such as nuclear reactor pressure vessels, heaters, and heat exchangers.

Pharmaceutical, food processing and other fields: It is suitable for equipment for the production and storage of highly corrosive media, such as chemical reactors, storage tanks, pipelines, pumps and other equipment.

Medical equipment field: It also has certain applications.