ThePipingMart Blog Grades AMS 5663 Nickel Alloy – Composition, Properties and Uses

AMS 5663 Nickel Alloy – Composition, Properties and Uses

AMS 5663

If you’re involved in the aerospace, defence, or oil and gas industries, then you’re likely familiar with AMS 5663. This specification covers a nickel-based alloy known for its exceptional strength, corrosion resistance, and high-temperature performance. This blog post will closely examine the composition, physical and mechanical properties, heat treatment, and uses of AMS 5663. By the end of this article, you’ll better understand this important alloy and how it can benefit your applications.

What is AMS 5663?

AMS 5663 (also known as Inconel Alloy 718) is a specification for high-temperature and corrosion-resistant superalloy materials. It is widely used in various industries, including aerospace, power generation, and chemical processing. This specification covers the materials’ heat treatment, chemical composition, and mechanical properties. Understanding the requirements of AMS5663 can help engineers and manufacturers select the right materials for their applications and ensure the highest performance and reliability.

What Forms Is AMS 5663 Available at Piping Mart?

  • Nut
  • Bar
  • Bolt
  • Pipe
  • Screw
  • Tubing
  • Valves
  • Washers
  • Flanges
  • Fasteners
  • Electrodes
  • Stud Bolts
  • Sheet Plates
  • Pipe Fittings
  • Forged Fitting
  • Instrumentation Fittings

AMS 5663 Composition

AMS 5663 material is a nickel-based alloy that contains significant amounts of chromium, molybdenum, cobalt, and tungsten, along with smaller amounts of iron, carbon, manganese, silicon, and phosphorus. The alloy’s chemical composition gives it excellent resistance to fatigue, stress corrosion cracking, and thermal fatigue. AMS 5663 sheet is often alloyed with other materials, such as aluminium, titanium, and ceramics, to enhance its properties further.

Element Content (%)
Nickel, Ni 52
Iron, Fe 19
Chromium, Cr 18
Niobium, Nb 5
Tantalum, Ta 5
Molybdenum, Mo 3
Cobalt, Co ≤ 1
Titanium, Ti 0.90
Aluminum, Al 0.50
Manganese, Mn ≤ 0.35
Silicon, Si ≤ 0.35
Copper, Cu ≤ 0.10
Carbon, C 0.050
Boron, B 0.0090

AMS 5663 Physical Properties

The physical properties of AMS 5663 make it an attractive choice for high-temperature applications. The alloy has a density of 8.4 g/cm3, a melting point of 1360° C, and a coefficient of thermal expansion of 13.1 µm/m°C. These properties allow AMS 5663 to retain its strength and hardness in environments that experience extreme temperatures.

Properties Metric Imperial
Density 8.23 g/cm3 0.297 lb/in3

AMS 5663 Mechanical Properties

AMS 5663 plate has exceptional mechanical properties under various conditions, including high strength, toughness, and flexibility. The alloy’s tensile strength at room temperature is 1480 MPa, yielding 1180 MPa. At elevated temperatures, AMS 5663 maintains its strength. It can withstand stresses of up to 1350 MPa between 600° C, and 900° C. Its excellent fatigue resistance is evident in its time to failure under cyclic loading.

Properties Metric Imperial
Tensile strength 1395 MPa 202300 psi
Yield strength 1175 MPa 170400 psi
Elastic modulus 200 GPa 29000 ksi
Elongation at break 22.3 % 22.3 %

AMS 5663 Equivalent

AMS 5589 AMS 5832 ASTM B637 GE B50TF14 GE B50TF15
AMS 5590 AMS 5664 ASTM B670 GE B50 TF69 PWA 1009
AMS 5596 AMS 5663 DIN 2.4668 GE B14H89 PWA 1010
AMS 5597 AMS 5662 DIN 2.4688 GE B50 TF14 PWA 1033
RBO 170-153 SPS M275 SPS M637

AMS 5663 Thermal Properties

Properties Metric Imperial
Thermal expansion co-efficient (at 25-200°C/77-392°F) 12.8 µm/m°C 7.11 µin/in°F
Thermal conductivity 11.4 W/mK 79.1 BTU in/hr.ft².°F

AMS 5663 Uses

AMS 5663 is a versatile alloy used across various industries, including aerospace, defence, oil and gas, and chemical processing. Its high strength and excellent corrosion resistance make it ideal for aircraft engines, gas turbines, and exhaust systems. AMS 5663 is also used in oil and gas pipelines, power generation, and nuclear reactors. AMS 5663 is used in reactors, heat exchangers, and furnace components in the chemical industry.

AMS 5663 Hardness

AMS 5663 is a hard and durable alloy with a high surface hardness of up to 410 HV. The alloy’s hardness allows it to resist wear and deformation under high loads, making it ideal for harsh and abrasive environments. As we’ll explore next, the hardness of AMS 5663 can be further enhanced through specialized heat treatment processes.

AMS 5663 Heat Treatment

Heat treatment can be used to optimize the properties of AMS 5663 for specific applications. Several heat treatment processes include solution annealing, ageing, and stress-relieving. Solution annealing involves heating the alloy to a high temperature, typically above 980° C, before rapidly cooling it to improve its strength and flexibility. Ageing involves heating the alloy to lower temperatures, typically between 550° C and 760° C, to improve strength and hardness. Stress-relieving reduces the residual stress in the alloy after it has been cold-worked or machined, improving its dimensional stability and durability.


AMS 5663 material is an important nickel-based alloy with exceptional strength, corrosion resistance, and high-temperature properties. Its chemical composition, physical and mechanical properties, and heat treatment processes make it a versatile alloy in various industries, including aerospace, defence, oil and gas, and chemical processing. Understanding the properties of AMS 5663 and how they can be optimized for specific applications is essential in selecting the right materials for your projects.

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