| Product Classification : Nickel Base Alloy | ||||||||||||
| UNS brand in the United States : | N08825 | |||||||||||
| German DIN : | 2.4858 | |||||||||||
| Chemical Composition(wt%) | ||||||||||||
| C | Mn | P | Si | S | Fe | Ni | Cr | Mo | Cu | Al | Ti | |
| Minimum value | Allowance | 38 | 19.5 | 2.5 | 1.5 | 0.6 | ||||||
| Maximum value | 0.025 | 1 | 0.02 | 0.5 | 0.01 | 46 | 23.5 | 3.5 | 3 | 0.2 | 1.2 | |
| Mechanical Properties | ||||||||||||
| Material | State | Tensile strength | Yield strength | Elongation | ||||||||
| σb Mpa | σ0.2 Mpa | δ% | ||||||||||
| AL-825* | ASTM standard | 586 | 241 | 30 | ||||||||
| Typical performance | 690 | 241 | 30 | |||||||||
| Alloy825** | Soft annealing | 585 | 240 | 30 | ||||||||
| *AL-825 is a registered trademark of a patent of Allegheny Ludlum, Inc. | ||||||||||||
| Product Form & Specification | ||||||||||||
| Product | ASTM standard | ASME standard | ||||||||||
| Sheet, sheet and strip | B424 | SB424 | ||||||||||
| Seamless tube | B163,B423 | SB163,SB423 | ||||||||||
| Welded pipe | B704,B705 | |||||||||||
| Bar and cake | B425 | SB425 | ||||||||||
| Applications | ||||||||||||
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Heating tubes and components for sulfuric acid pickling; Seawater cooling heat exchanger; Acid gas environment pipeline; Heat exchanger for petroleum refining; Phosphoric acid production with heat exchanger, steam
An instrument, etc. Chemical process equipment; Food engineering, etc. |
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Austenitic alloy containing nickel, iron, chromium, molybdenum, and copper. The high content of chromium, nickel, molybdenum, and copper makes the alloy undergo moderate oxidation and reduction in moderate oxidizing environments
Excellent corrosion resistance in both sexual and non oxidizing hot acid environments. The combination of nickel content in this alloy with molybdenum and copper greatly improves its corrosion resistance in reducing media Performance; A sufficiently high nickel content can provide the best resistance to chloride stress corrosion; The content of chromium and molybdenum provides a certain resistance to pitting corrosion; Adding a certain amount of titanium to stabilize Improved its welding stability. As an austenitic nickel based alloy, this alloy has excellent toughness in the temperature range from low temperature to 538 ºC, and through various technical strips All parts are easy to shape and weld. |
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