NICKEL ALLOY STEEL INCOLOY 925 N09925 ASTM B161 B983 SEAMLESS PIPE ANF TUBE

Mechanical Properties

(as per ASTM B163)

Applications

Alloy 925 (UNS N09925) 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. Let's explore its industrial uses:

Chemical Processing:

• It finds applications in reactors, heat exchangers, and other components exposed to aggressive chemical environments.

• Alloy 925 is commonly employed in chemical processing equipment due to its excellent resistance to reducing chemicals.
  

Oil and Gas Industry:

• In the oil and gas sector, Alloy 925 is used for downhole tools, subsea components, and offshore platforms.

• Its ability to withstand corrosive seawater and harsh downhole conditions is crucial1.

Aerospace and Aircraft Components:

• Alloy 925 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.

Marine Engineering:

• The alloy is suitable for marine applications, including propeller shafts, fasteners, and other fixtures.

• Its corrosion resistance ensures durability in saltwater environments

Heat Exchangers and Boiler Feedwater Heaters:

• Alloy 925 is utilized in heat exchangers and boiler feedwater heaters.

• Its combination of strength and resistance to corrosion makes it valuable for efficient heat transfer.

Remember that Alloy 925's properties make it a versatile material across different industries, especially where both strength and corrosion resistance are critical.

Production Summary

Incoloy alloy 925 (UNS N09925) is an agehardenable nickel-iron-chromium alloy with additions of molybdenum, copper, titanium and aluminum. 

The alloy’s chemical composition, listed in Table 1, is designed to provide a combination of high strength and excellent corrosion resistance. The nickel content is sufficient for protection against chloride-iron stresscorrosion cracking. The nickel, in conjunction with the molybdenum and copper, also gives outstanding resistance to reducing chemicals. The molybdenum aids resistance to pitting and crevice corrosion. 

The alloy’s chromium content provides resistance to oxidizing environments. The titanium and aluminum additions cause a strengthening reaction during heat treatment. 

Incoloy alloy 925 is used in various applications requiring a combination of high strength and corrosion resistance. Because of the alloy’s resistance to sulfide stress cracking and stress-corrosion cracking in “sour” (H2S containing) crude oil and natural gas, it is used for down-hole and surface gaswell components including tubular products, valves, hangers, landing nipples, tool joints and packers. 

The alloy is also useful for fasteners, marine and pump shafting and high-strength piping systems.