NS3404
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NS3404 is a nickel-based corrosion-resistant alloy with excellent corrosion resistance and high-temperature performance. It is widely used in the chemical, aerospace, and nuclear industries.
Product name：
Refined straight Angle steel
Material：
Q355B
Warehouse：
Tianjin
Surface treatment：
Welding process
Keyword：
NS3404
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Details description
Chemical Composition
Carbon C≤0.03, Silicon Si≤0.80, Manganese Mn≤1.50, Phosphorus P≤0.004, Sulfur S≤0.020, Nickel Ni balance, Chromium Cr 28.5~31.5, Molybdenum Mo 4.0~6.0, Tungsten W 1.5~4.0, Iron Fe 13.0~17.0, Copper Cu 1.0~2.4, Niobium + Tantalum Nb+Ta 0.3~1.5, Cobalt Co≤5.0.
Physical Properties
Density: 8.22g/cm³, Melting point: 1350~1370℃, Specific heat capacity: 388~619J/kg・K, Thermal conductivity: 10.2~16.7W/(m・K).
Mechanical Properties: Possesses high strength and excellent toughness, suitable for applications requiring mechanical stress resistance. Maintains good strength and stability at high temperatures.
Corrosion Resistance: Due to the high chromium content and the combined effect of other alloying elements, it exhibits extremely strong corrosion resistance in sulfuric acid, nitric acid, and other solutions. Its performance in phosphoric acid is superior to G3, 20 alloy, and 625 alloy. It also has good corrosion resistance to chloride and alkaline solutions and can resist stress corrosion cracking.
Processing Properties: Good hot workability; hot working temperature is typically between 1150℃ and 1200℃, followed by slow cooling after forging. Cold workability is also good and can be processed by cold rolling, cold drawing, and cold bending. However, work hardening may occur during cold working, requiring intermediate annealing. This alloy has good weldability; conventional welding methods are applicable, and post-weld heat treatment is not required.
Application Fields
Mainly used in wet phosphoric acid production and processing, and in nitric acid hydrofluoric acid pickling equipment and components. It is also a selectable structural steel for acidic oil and gas wells. It is also widely used in chemical equipment, aerospace vehicles, nuclear reactors, marine engineering structures, medical devices, high-temperature furnaces, and heat exchangers.
Qualification certification
Corporate video
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Application fields
Petrochemicals
Petrochemicals
Aerospace
Aerospace
Energy equipment
Energy equipment
Oil/gas/water pipelines
Oil/gas/water pipelines
Building construction
Building construction
Dredging & piling works
Dredging & piling works
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