Inconel Products

Inconel 625

 Inconel Alloy 625 (UNS designation N06625) is a nickel-based super alloy that possesses high strength properties and resistance to elevated temperatures. It also demonstrates remarkable protection against corrosion and oxidation. Its ability to withstand high stress and a wide range of temperatures, both in and out of water, as well as being able to resist corrosion while being exposed to highly acidic environments makes it a fitting choice for nuclear and marine applications.

Inconel 625 was designed as a solid solution strengthened material with no significant microstructure. This holds true at low and high temperatures, but there is a region (923 to 1148 K) where precipitates form that are detrimental to the creep properties, and thus the strength, of the alloy. Under any creep conditions (high temperature with an applied stress), M23C6-type carbides form at the grain boundaries. When tested at 973 K, γ” precipitates begin forming. These γ” phase precipitates are ordered A3 B type with a composition of Ni3(Nb, Al, Ti) and a tetragonal crystal structure. They form a disk-shaped morphology and are coherent with respect to the matrix. When tested at 998 K, a δ-phase precipitate begins forming which consist of Ni3(Nb, Mo) in an orthorhombic crystal structure. They form in a needle-like morphology and are incoherent with the matrix. Both of these precipitates can be completely dissolved back into the matrix when the sample is heated 1148 K. This leads to the ability to recover creep properties of the alloy to prolong the materials lifetime

Market for Inconel 625 includes:

Marine

Nuclear

Chemical Processing

Aerospace

Glow Plugs

Product and technology applications of Inconel 625 include

Seawater components

Flare stacks

Aircraft ducting systems

Fabrication with Inconel 625

Specialized seawater equipment

Chemical process equipment

Turbine shroud rings

Engine thrust-reverser systems

Jet engine exhausts systems

Boiler furnaces

Specifications and certifications include

AMS: 5599, 5666

MS: 5837

ASME: SB 443 Gr 1, SB 446 Gr 1

ASTM: B 443 Gr 1, B 446 Gr 1

EN: 2.4856

ISO: 15156-3

NACE: MR0175-3

UNS: N06625