Nimonic® 90 - 2.4632 - UNS N07090
Description
Nickel-based alloy 90 contains cobalt and has an excellent heat resistance superior to that of alloy 80A (up to 920°C), and is resistant to creep and hot oxidation. The mastery of its VIM production method followed by ESR or VAR remelting gives it a high level of cleanliness and homogeneity, which are essential to guarantee its properties.
Stainless has several qualified European or American sources in stock as well as different diameters that will allow you to best satisfy your needs in terms of implementation. This product can also be made to measure or cut into slugs by our service centres.
Main applications
The grade is used for the manufacture of parts subject to high temperatures up to 920°C and high mechanical stresses. Applications include engine valves, aerospace engine parts such as discs and hot mountings.
Metallurgy
The grade can be put into solution and then work-hardened before ageing. The microstructure is homogeneous and fine grained and hardening occurs by the appearance of gamma prime precipitates. In the solution treated condition, the microstructure is illustrated below with an austenitic matrix and homogeneously distributed carbides:
Machinability
Forgeability/Usability
The grade can be hot forged in the 1050/1200°C temperature range. Machining of this grade requires suitable equipment and tools. TIG or MIG welding is possible.
Heat treatments
Ageing is to be carried out at 700°C for 16 hours/air cooling on the solution treated or solution treated and work hardened condition.
Corrosion resistance
The grade is highly resistant to hot oxidation which allows it to be used in engine applications.
Standard Sizes
3m bars in solution treated or solution treated and work hardened condition – Work hardened or ground surface
Other formats: please consult us
THE MAIN NICKEL-BASED ALLOYS DISTRIBUTED BY STAINLESS
Superalloys
Nickel Beryllium 360
Inconel 718
Inconel 625
Inconel 600
Other grades are available from stock or on order.