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Incoloy 926 UNS N08926 1.4529 Nickel Alloy

Incoloy 926 UNS N08926 1.4529 Nickel Alloy

Incoloy 926 UNS N08926 1.4529 Nickel Alloy

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Incoloy 926 UNS N08926 1.4529 Nickel Alloy



Chemical Composition


Alloy ％ Ni Cr C Mn Fe Si Cu Mo N Ti P S
Incoloy 926 Min 24.0 19.0



0.5 6.0 0.15 0.6


Max 26.0 21.0 0.02 2.0 Bal 0.5 1.5 7.0 0.25 1.2 0.03 0.01

Physical properties


■Characteristic



Tensile strength
Rm N/mm²
 Yield Strength (0.2％ offset)
Rp0.2N/mm²
 Elongation
A5 ％
 Density
 Melting point
(℃)
650 295 ≤35
 8.1g/cm³
 1320-1390

Features


1, High resistance to pitting and crevice corrosion in halide media and acidic media containing H2S.
2, It can effectively resist chloride ion stress corrosion cracking in practical applications.
3, It has excellent corrosion resistance to various corrosions in the usual oxidation and reduction environments.
4, Mechanical performance is significantly improved over the Cronifer 1925 LC-Alloy 904L.
5, Compared with the same series of alloys with 18% nickel content, the metallurgical stability is greatly improved.
6, Applicable to pressure vessel manufacturing (VDTUV-196~400°C and ASME certification)

Metallographic Structure


800H is a face-centered cubic crystal structure.

Corrosion Resistance


926 is an austenitic stainless steel having a similar chemical composition to alloy 904L, and its nitrogen content is increased to about 0.2%, and the molybdenum content is about 6.5%. The increase in nitrogen and molybdenum content significantly improves the pitting and crevice corrosion resistance in the halide medium. At the same time, nickel and nitrogen not only ensure the stability of the metallographic phase, but also lower the tendency of the intergranular phase to precipitate during hot working or welding than alloys with a lower nickel nitrogen content. Excellent local corrosion resistance plus 25% nickel content makes Alloy 926 particularly resistant to corrosion in chloride media. Tests in various FGD systems of limestone slurry having a chloride concentration of 10,000 to 70,000 PPM, a pH of 5 to 6, and an operating temperature of 50 to 68 ° C indicate that the alloy 926 has substantially no occurrence after a test period of 1-2 years. Corrosion and crevice corrosion. Alloy 926 also has excellent corrosion resistance in other chemical media, as well as high temperature, high concentration media including sulfuric acid, phosphoric acid, acid gases, seawater, salts and organic acids. The 926 alloy is the material of the BAM catalogue of the BAM catalogue of the German National Institute of Materials and Testing (BAM) in Berlin. In addition, the best corrosion resistance is achieved only when the material is in the correct metallurgical state and is guaranteed to be clean.

Applications


Alloy 926 is a versatile material that can be used in many industries:
1, Fire protection systems, seawater purification systems, hydraulic and perfusion piping systems in marine engineering
2, Bleaching tank in cellulose pulp production
3, Polished bar in corrosive oil wells
4, Hose system in marine engineering
5, Pipes, joints, airflow systems, etc. in acid gas production
6, Parts in flue gas desulfurization systems
7, Evaporators, heat exchangers, filters, mixers, etc. in phosphoric acid production
8, Sulfuric acid separation and condensation system
9, Concentrated and crystallized salt evaporator
10, Condensation and piping systems in power plants using sewage cooling water
11, Container for transporting corrosive chemicals
12, Production of organic derivatives using acid chloride catalysts
13, Reverse osmosis desalination plant