AMS 5662, AMS 5663 and AMS 5666 have all been updated! The new revisions for these nickel alloy material specs are here now at Document Center Inc. The specifications cover corrosion and heat-resistant nickel alloy in specified forms. Each of the 3 new revisions stems from the usual SAE 5 year review. Similar areas in each of these materials specifications are addressed in the updates. Let’s take a look at each separately for a complete run-down of the changes.
AMS 5662, Revision N, “Nickel Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings 52.5Ni – 19Cr – 3.0Mo – 5.1Cb (Nb) – 0.90Ti – 0.50AI – 18Fe Consumable Electrode or Vacuum Induction Melted 1775 °F (968 °C) Solution Heat Treated, Precipitation-Hardenable.”
This type of nickel alloy (similar to UNS 07718) is used in applications where high resistance to creep and stress-rupture are required. The alloy is often formed or welded prior to precipitation heat treating. The following clauses have been modified: Table 1 (composition), 3.3.1.3 (condition), 3.5 — Tables 2 and 3 (properteries) and 4.4 (reports). Properties for product that have a diameter of 5 to 10 inches are added. Conformance to AS-6279 in clause 4.4 is also added.
AMS 5663, Revision N, “Nickel Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings 52.5Ni – 19Cr – 3.0Mo – 5.1Cb (Nb) – 0.90Ti – 0.50Al – 18Fe Consumable Electrode or Vacuum Induction Melted 1775 °F (968 °C) Solution and Precipitation Heat Treated.”
Again, this type of nickel alloy is similar to UNS 07718. It’s used for parts that need to be resistant to creep and stress-rupture as well. Changes are to the same topics, but sometimes in clauses whose numbers differ from the AMS 5662. So you’ll find changes to Composition (Table 1), Condition (3.3), Properties (3.5, Tables 2 aand 3) and Reports (4.4). Additions are again, properies for product with a diameter of up to 10 inches and conformance to AS-6279 (in clause 3.8).
AMS 5666, Revision H, “Nickel Alloy, Corrosion and Heat-Resistant, Bars, Forgings, Extrusions, and Rings 62Ni – 21.5Cr – 9.0Mo – 3.65Cb (Nb) Annealed.”
As before, this nickel alloy specification has been updated due to the usual 5 year review. The nickel in question can handle higher temperatures for both corrosion and oxidation resistance. The material is similar in composition to UNS N06625. Your updates will be found in the following sections: Composistion (Table 1), Condition (3.2.1.1), Tensile properties (3.3.1.1 — Table 2), Grain size (3.3.1.3), Sampling and testing (4.3.1.1) and Reports (4.4). Again, there is the addition of properties for product up to 10 inches in diameter. And again, conformance to AS-6279 is added in clause 3.6.
For those of you who use these specifications (and many of you do!), these updates are a must. Order them at the Document Center webstore, www.document-center.com. Here’s a direct link for the order page for AMS 5662, for AMS 5663, and for AMS 5666. Or you are welcome to contact our staff for assistance. We can be reached by phone (650-591-7600) or email (info@document-center.com).
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