Introduction
Uns N08825, also known as Incoloy 825, is a nickel-iron-chromium alloy that is commonly used in applications that require resistance to corrosion and high temperatures. This alloy has a unique chemical composition that gives it exceptional performance in harsh environments. In this article, we will discuss everything you need to know about Uns N08825 chemical composition.
Chemical Composition
The chemical composition of Uns N08825 is as follows: – Nickel: 38-46% – Iron: 22% min – Chromium: 19.5-23.5% – Molybdenum: 2.5-3.5% – Copper: 1.5-3% – Titanium: 0.6-1.2% – Aluminum: 0.2% max – Carbon: 0.05% max – Manganese: 1% max – Silicon: 0.5% max – Sulfur: 0.03% max – Phosphorus: 0.03% max
Nickel
Nickel is the primary component of Uns N08825, making up 38-46% of the alloy. Nickel provides excellent resistance to corrosion, particularly in acidic environments. The high nickel content also gives Uns N08825 good resistance to stress corrosion cracking.
Iron
Iron is the second most abundant element in Uns N08825, making up at least 22% of the alloy. Iron improves the strength and ductility of the alloy.
Chromium
Chromium is a key element in Uns N08825 chemical composition, making up 19.5-23.5% of the alloy. Chromium provides excellent resistance to oxidation and corrosion, particularly in high-temperature environments.
Molybdenum
Molybdenum is an essential component of Uns N08825, making up 2.5-3.5% of the alloy. Molybdenum improves the resistance of the alloy to localized corrosion, particularly in chloride environments.
Copper
Copper is a minor component of Uns N08825, making up 1.5-3% of the alloy. Copper improves the resistance of the alloy to sulfuric acid and other reducing acids.
Titanium
Titanium is a minor component of Uns N08825, making up 0.6-1.2% of the alloy. Titanium improves the resistance of the alloy to pitting and crevice corrosion.
Aluminum
Aluminum is a trace element in Uns N08825, with a maximum content of 0.2%. Aluminum improves the resistance of the alloy to oxidation and carburization.
Applications
Uns N08825 is commonly used in applications that require resistance to corrosion and high temperatures. Some of the typical applications of Uns N08825 include: – Chemical processing equipment – Oil and gas production – Pollution control equipment – Nuclear fuel reprocessing – Pulp and paper production – Acid production
Conclusion
In conclusion, Uns N08825 chemical composition makes it an ideal choice for applications that require resistance to corrosion and high temperatures. The alloy’s unique combination of nickel, iron, chromium, molybdenum, copper, titanium, and other elements provides exceptional performance in harsh environments. If you need an alloy that can withstand extreme conditions, Uns N08825 is an excellent option.