Nickel-Base alloy 718 AMS 5662 steel mechanical properties

AMS 5662 is a designation of Nickel Inconel 718, itself a nickel-chromium alloy with high strength, corrosion and oxidation resistance, and excellent tensile and impact strength at cryogenic temperatures.

Mechanical properties of Nickel-Base alloy 718 AMS 5662 steel
There are two main types of solution annealed and aging treatments:
1)
Solution Treatment (AMS 5662 Bar / AMS 5596 Sheet): 1725°F - 1850°F + Air Cool.
Heat Treatment (AMS 5663 Bar) : 1325°F for 8 hrs, cooling 100°F/hr to 1150°F, hold at 1150°F for 8hrs min, + Air Cool .
This treatment gives the highest room temperature tensile and yield strengths as well as producing the highest fatigue strength. It is the optimum heat treatment for Alloy 718 where a combination of rupture life, notch rupture life and rupture ductility is required.

2)
Alternative Solution Treatment (AMS 5664 Bar / AMS 5597 Sheet): 1900°F - 1950°F + Air Cool
Heat Treatment: 1400°F for 10hrs, furnace cool to 1200°F, hold at 1200°F for a total aging time of 20 hrs + Air Cool.
This is the prefered treatment in tensile-limited applications as it produces the best transverse ductility in heavy sections, impact strength and low temperature notch tensile strength. However, this treatment has a tendency to produce notch brittleness in stress rupture.
Typical Mechanical Properties of Nickel-Base alloy 718 bar below.

Typical Mechanical Properties of Nickel-Base alloy 718 sheet below

Availability
Nickel-Base alloy 718 (UNS N07718) is available in BAR (ROUNDS, FLAT, SHAPES), WIRE, BILLET, STRIP, ROD, SHEET, PLATE, FORGING STOCK AND WELDING WIRE. For all stock availability contact Sales.

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