SAE AMS5662P-2022 PDF

Full title and description

SAE AMS5662P-2022 — Nickel Alloy, Corrosion- and Heat-Resistant, Bars, Forgings, Rings, and Stock for Forgings and Rings; composition approx. 52.5 % Ni – 19 % Cr – 3.0 % Mo – 5.1 % Cb (Nb) – 0.90 % Ti – 0.50 % Al – 18 % Fe; consumable-electrode or vacuum-induction melted; solution heat treated and precipitation‑hardenable. This material specification covers the chemistry, form, heat treatment, and acceptance requirements for nickel‑base Alloy 718 in bar/forging/ring product forms.

Abstract

AMS5662P is a material specification for a corrosion‑ and heat‑resistant nickel‑based superalloy (commonly associated with Inconel/Alloy 718) supplied as bars, forgings and rings in the solution‑treated condition and suitable for subsequent precipitation (age) hardening. The revision P (2022) updates and reaffirms requirements for manufacture, chemical limits, size limits, and heat‑treatment conditions.

General information

• Status: Revised (latest revision P).
• Publication date: August 17, 2022 (Revision P).
• Publisher: SAE International.
• ICS / categories: Metallurgy — Non‑ferrous metals; Nickel and nickel alloys (ICS 77.120 / 77.150 product classifications applicable to nickel alloys and products).
• Edition / version: AMS5662P (2022 revision, denoted "P").
• Number of pages: 10 pages (material specification length).

Scope

The specification covers a precipitation‑hardening, corrosion‑ and heat‑resistant nickel alloy in the form of bars, forgings, and flash‑welded rings supplied in the solution‑heat‑treated condition. Product size is limited for finished bars/forgings/rings to nominal diameters or maximum cross‑sectional dimensions of 10.00 inches (254 mm) or an equivalent maximum nominal cross‑sectional area (78.54 in²), while stock for forging or heading may be of any size. Requirements include permitted melting routes (consumable electrode or vacuum induction melting), required chemical composition ranges, heat‑treatment temperature (solution treat ~1775 °F / 968 °C), and acceptance tests.

Key topics and requirements

• Chemical composition and element limits (nickel, chromium, molybdenum, columbium/niobium, titanium, aluminum, iron, plus trace limits for C, Mn, Si, P, S).
• Permitted melting processes: consumable‑electrode and vacuum induction melting with associated quality/cleanliness requirements.
• Heat treatment: solution heat treatment (specified ~1775 °F / 968 °C) and provisions for subsequent precipitation (age) hardening to achieve required mechanical properties.
• Dimensional/size limits for bars, forgings and rings; allowances for stock‑forging of any size.
• Acceptance criteria: chemical analysis, mechanical test requirements, hardness limits, nondestructive or visual inspection and marking/traceability requirements.
• Designation and ordering information to ensure correct temper, form, certification, and test reports accompany deliveries.

These topics reflect the material‑specification focus for Alloy 718 style nickel‑base product forms and are consistent with SAE AMS5662P requirements.

Typical use and users

Primary users are aerospace and defense manufacturers, shops producing jet engine components, gas‑turbine and high‑temperature hardware, fastener and bearing suppliers, and industrial firms requiring high‑strength, high‑temperature nickel alloys (oil & gas, power generation, rocket/spacecraft hardware). Typical applications include turbine and engine rotating parts, high‑temperature bolts and fasteners, spacers, shafts, and components that will be age‑hardened to final strength. Distributors, specialty metal suppliers, and procurement/quality engineers working to aerospace material control plans commonly reference AMS5662 for procuring Alloy 718 bar/forging stock.

Related standards

Commonly associated specifications and standards include AMS5663 (age‑hardened condition of the same alloy), ASTM/ASME material standards for nickel alloys (for example ASTM/ASME B637), procurement and manufacturer specifications from engine OEMs and prime contractors (GE, Pratt & Whitney style internal specs), and other AMS material series for precipitation‑hardening nickel alloys. AMS5662 has a revision history (earlier letter revisions) and is paired with product and test standards that cover complementary forms and treatments.

Keywords

AMS5662, AMS5662P, Alloy 718, Inconel 718, nickel‑chromium‑niobium alloy, precipitation‑hardening, solution heat treated, bars, forgings, rings, SAE material specification, high‑temperature alloy.

FAQ

Q: What is this standard?

A: AMS5662P is an SAE (SAE International) material specification for a corrosion‑ and heat‑resistant nickel alloy product (commonly Alloy/Inconel 718) supplied as bars, forgings and rings in the solution‑treated, precipitation‑hardenable condition; revision P was issued August 17, 2022.

Q: What does it cover?

A: It specifies chemical composition limits, permitted melting and production routes (consumable electrode or vacuum induction melting), size limits for finished product, solution heat‑treatment condition (specified temperature range), acceptance/inspection requirements, marking and traceability for bar/forging/ring forms of the alloy.

Q: Who typically uses it?

A: Aerospace OEMs and suppliers, turbine and engine manufacturers, specialty metal distributors, fastener makers, and procurement/quality engineers who buy or control raw bar/forging stock for high‑temperature, high‑strength components. Industries include aerospace, defense, power generation, and oil & gas.

Q: Is it current or superseded?

A: As published information shows, AMS5662P is a revised edition (Revision P) published on August 17, 2022. For procurement or certification decisions, users should confirm whether a later revision or replacement has been issued since that date.

Q: Is it part of a series?

A: Yes — AMS5662 belongs to the AMS material series for nickel superalloys and has companion or follow‑on AMS documents (for example AMS5663 for the aged/hardened condition) and an established revision history (earlier letter revisions up through P). It is also cross‑referenced with ASTM/ASME and OEM specifications where applicable.

Q: What are the key keywords?

A: Inconel 718, Alloy 718, nickel‑base superalloy, AMS5662, precipitation‑hardening, solution heat treated, bars, forgings, rings, high‑temperature corrosion resistant.