NS321 Corrosion Resistant Alloy Introduction:
NS321 alloy is a nickel-molybdenum corrosion-resistant alloy. Its main feature is the corrosion resistance of boiling HCl. The alloy has good corrosion resistance under atmospheric conditions, especially in water and high-purity water. It has a wide range of applications in the fields of energy manufacturing and pollution control, especially in industries such as sulfuric acid, HCl, phosphoric acid, and acetic acid, but its disadvantage is that once it passes through the welding seam, there will be knife edge corrosion and intergranular corrosion in the heat affected zone. , so if there is a requirement for this aspect, Shanghai Weili recommends to use B2. And attach the NS321 brand name and chemical composition of each country.
Similar grades of NS321 corrosion resistant alloy:
National plate number: NS3201, NS321, 0Mo28Ni65Fe5, NS321
American plate number: NS321, N10001, NS321
German plate number: 2.4800/2.4482, s-nimo30, NS321
French plate number: NiCu30AL
NS321 corrosion resistant alloy chemical composition%:
Carbon C: ≤ 0.12,
Chromium Cr: ≤1.0,
Nickel Ni: balance,
Iron Fe: ≤6.0,
Manganese Mn: ≤1.0,
Silicon S: ≤1.0,
Molybdenum Mo: 26-30,
Vanadium V: ≤0.6
Mechanical properties of NS321 corrosion resistant alloy:
Density: 9.24g/cm3,
melting point: 1320-1350ºC,
ensile strength RmN/mm: 2690,
yield strength RP0.2N/mm: 2310,
elongation A5%: 40.
NS321 corrosion resistant alloy features:
1. Control the low content of iron and chromium to prevent the formation of β-phase Ni4Mo.
2. Excellent corrosion resistance to reducing environment.
3. Good resistance to medium concentration sulfuric acid and many non-oxidizing acids.
4. Good resistance to chloride reduction stress corrosion cracking (SCC).
5. Good corrosion resistance to various organic acids.
NS321 corrosion resistant alloy processing:
The deformation pressure of hot working is large, the deformation temperature is 1000-1200 degrees, and the cold forming and plasticity are good during cold working. The solution temperature is 1150-1170 degrees, and the annealing temperature is 1000-1100 degrees. Welding is weldable and can be welded by general methods, but welding methods that can lead to carbon increase should not be used.
Corrosion resistance of NS321 corrosion resistant alloy:
The carbon and silicon content of the nickel-molybdenum alloy is extremely low, which reduces the precipitation of carbon and other impurity phases in the welding heat-affected zone, so the welding seam also has sufficient corrosion resistance. It has good corrosion resistance in reducing media, such as HCl solutions of various temperatures and concentrations. It also has good corrosion resistance in medium concentration sulfuric acid solution (or containing chloride ions). It can also be used in CH3COOH and phosphoric acid environments. Alloy materials can have good corrosion resistance only when they are in suitable metallographic state and pure crystal structure.
Application fields of NS321 corrosion resistant alloy:
NS321 corrosion-resistant alloy is used in corrosive environments resistant to HIC acid and wet HIC gas. Containers, pipelines, towers, etc. in the chemical processing process can also be made of castings to make valves and pumps. Its filaments can be used as cathode materials for electron tubes.
Company Profile
Test Equipment :
Company strength:
Certificate:
Welcome to contact us,thanks
Our products sales all over the world as well. From the following two websites you can also get more information about our company:
http://xingda-alloy.en.made-in-china.com
http://xingda-alloy.en.made-in-china.com
Welcome to contact us,thanks
Audited Supplier 
){kind=link}
){kind=link}