UNS N09925 is an age hardenable nickel-iron-chromium alloy with additions of molybdenum, copper, titanium and aluminum. The alloy's chemical composition is designed to provide a combination of high strength and excellent corrosion resistance.
INCOLOY® Alloy 925 (UNS N09925) is an age-hardenable nickel-iron-chromium alloy with additions of molybdenum, copper, titanium, and aluminum. The nickel content is sufficient for protection against chloride-ion stress corrosion cracking. The nickel, in conjunction with the molybdenum and copper, also provides outstanding resistance to reducing chemicals. Molybdenum aids in resistance to pitting and crevice corrosion. The alloy's chromium content provides resistance to oxidizing environments. The additions of titanium and aluminum cause a strengthening reaction during heat treatment.
UNS N09925 Chemical Composition
C
P
S
Less than or equal to 0.03
Less than or equal to 1.00
Less than or equal to 0.50
Less than or equal to 0.030
Less than or equal to 0.030
19.50-21.00
Less than or equal to 1.00
2.50-3.50
Less than or equal to 0.50
1.90-2.40
0.10-0.50
38.00-46.00
1.50-3.00
UNS N09925 Mechanical Properties
UNS N09925
Solution Annealed+Prec hard
Greater than or equal to 140(965)
Greater than or equal to 110(758)
Greater than or equal to 18
Less than or equal to 38
UNS N09925 Plate Applications
Alloy 925 (UNS N09925) Plate is an age-hardenable nickel-iron-chromium alloy with additional elements such as molybdenum, copper, titanium, and aluminum. This alloy is utilized in various applications that require a combination of high strength and corrosion resistance. Here are its industrial uses:
UNS N09925 Plate is commonly employed in chemical processing equipment due to its excellent resistance to reducing chemicals. It is used in reactors, heat exchangers, and other components exposed to aggressive chemical environments.
In the oil and gas sector, UNS N09925 Plate is used for downhole tools, subsea components, and offshore platforms. Its ability to withstand corrosive seawater and harsh downhole conditions is crucial.
UNS N09925 Plate is found in aircraft engine components, where high-temperature resistance and mechanical strength are essential. It contributes to the reliability and performance of aerospace systems.
UNS N09925 Plate is utilized in heat exchangers and boiler feedwater heaters. Its combination of strength and resistance to corrosion makes it valuable for efficient heat transfer.
Overall, UNS N09925 Plate is a versatile material across different industries, especially where both strength and corrosion resistance are critical.