904L Stainless Steel Plate,904 stainless steel sheet,stainless steel sheet 904
904L Stainless Steel Plate,904 stainless steel sheet,stainless steel sheet 904
904 stainless steel sheet
stainless steel sheet 904
We are a professional supplier of hot rolled alloy 904L stainless steel plates, coils and cold rolled alloy 904L stainless steel sheets and rolls with various size in plain and embossed patterns in China.
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Product |
UNS N08904/904L Stainless Steel Plate and Sheet |
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Finish |
2B, No.1, 1D |
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Thickness |
|
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Standard Width |
1000mm/1220mm/1500mm/1800mm |
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Standard Length |
2000mm/2440mm/3000mm/6000mm/Coil |
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Standard |
ASTM A240M/A480M, JIS G4304, JIS G4305, EN 10088/3 |
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Grade |
904L/UNSN08904 |
General Properties
Alloy 904L (UNS N08904) is a superaustenitic stainless steel that is designed for moderate to high corrosion resistance in a wide range of process environments. The combination of high chromium and nickel content, coupled with additions of molybdenum and copper, assure good to excellent corrosion resistance.
With its highly alloyed chemistry — 25% nickel and 4.5% molybdenum, 904L provides good chloride stress corrosion cracking resistance, pitting and general corrosion resistance superior to 316L and 317L molybdenum enhanced stainless steels.
Alloy 904L was originally developed to withstand environments containing dilute sulfuric acid. It also offers good resistance to other inorganic acids such as hot phosphoric acid as well as most organic acids.Alloy 904L is easily welded and processed by standard shop fabrication practices.
Corrosion Resistance
The high content of alloying elements in 904L gives the alloy exceptionally good resistance to uniform corrosion.
904L was originally developed to withstand environments containing dilute sulfuric acid, and is one of the few stainless steels that, at temperatures up to 95°F (35°C), provides full resistance in such environments within the entire concentration range of 0 to 100%. 904L also offers good resistance to a number of other inorganic acids, such as phosphoric acid and most organic acids. However, acids and acid solutions containing halide ions can be very aggressive, and the corrosion resistance of 317L, 317LMN and 904L may be insufficient.
Fractional distillation of tall oil often needs better material than 316L or even the more frequently used 317LMN. In these hot concentrated caustic solutions, the corrosion resistance is mainly determined by the nickel content of the material. With a nickel content of 25%, 904L has proven to be a good alternative to most conventional stainless steels.
Conventional stainless steels such as 304L and 316L are susceptible to chloride stress corrosion cracking (SSC) under certain conditions. Resistance to SSC increases with the increased content of nickel and molybdenum. Therefore, the higher performance austenitic stainless steels such as 904L have very good resistance to SSC. The table in the upper right corner shows resistance to SSC in a chloride solution under evaporative conditions. High performance austenitic steels and duplex stainless steelsclearly outperform 316L.
Our service:The company has equipped with many international standard stainless steel processing facilities such as: Coil Leveling Machine, Edge Slitting Machine, Precision Water Jet Cutting Machine, Laser Cutting Machine, HL, NO.4 and 8K Polishing Machine, Embossing Machine and Bending Machine. Based on our large stock and advanced processing equipment, we can provide professional products and service for you with competitive price.
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