ThePipingMart Blog Grades AMS 7001 Nickel Alloy – Composition, Properties and Uses

AMS 7001 Nickel Alloy – Composition, Properties and Uses

AMS 7001

AMS 7001 is a widely used aerospace material for its outstanding physical and mechanical properties. This material is used in different aerospace applications due to its excellent corrosion resistance, durability, and high strength-to-weight ratio. Suppose you are looking for a reliable material for your aerospace application. In that case, knowing what AMS7001 is, its composition, physical and mechanical properties, uses hardness, and heat treatment processes is essential. In this blog, we will provide you with all the information you need to know about AMS 7001.

What is AMS 7001?

AMS 7001 (also known as Inconel 625 Alloy) material is a high-strength Incoloy alloy commonly used in aerospace applications. Known for its excellent strength-to-weight ratio, AMS7001 material is a popular choice for constructing aircraft parts and components, such as airframes, wings, and landing gear. This material can withstand extreme temperature variations and has exceptional corrosion resistance, making it a reliable option for aircraft manufacturers. Its excellent machinability and weldability make it a preferred material among engineers and designers. Overall, AMS7001 material is a reliable and durable material that meets the rigorous demands of the aerospace industry.

What Form Is AMS 7001 Available at Piping Mart?

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

 AMS 7001 Composition

AMS 7001 is a high-strength aluminium alloy composed of aluminium (Al), zinc (Zn), and magnesium (Mg). It is a heat-treatable alloy that also includes copper (Cu), cobalt (Co), manganese (Mn), iron (Fe), and silicon (Si). These elements contribute to the alloy’s strength, flexibility, and corrosion resistance.

NI 58.0 min
AL 0.40 max
FE 5.0 max
MN 0.50 max
C 0.10 max
SI 0.50 max
S 0.015 max
P 0.015 max
CR 20.0 – 23.0
NB + TA 3.15 – 4.15
MO 8.0 – 10.0
TI 0.40 max

AMS 7001 Physical Properties

AMS 7001 has excellent physical properties, making it a popular material in aerospace. It has a density of 2.85 g/cm3, a thermal conductivity of 131 W/(m·K), and a specific heat of 910 J/(kg·K). It also has a melting point of 582°C and a thermal expansion coefficient of 23.4×10-6/K. These physical properties make AMS 7001 suitable for high-temperature and high-stress applications.

AMS 7001 Mechanical Properties

AMS 7001 boasts exceptional mechanical properties that make it ideal for aerospace applications. It has a tensile strength of 450 MPa, yield strength of 350 MPa, and an elongation of 8%. Moreover, it has a modulus of elasticity of 72 GPa and a Poisson’s ratio of 0.33. These mechanical properties make AMS 7001 highly resistant to fatigue and corrosion, making it ideal for high-stress aerospace applications.

PROPERTY 21°C 204 °C 316 °C 427 °C 538 °C 649 °C 760 °C 871 °C
Ultimate Tensile Strength /Mpa 992.9 923.9 910.1 910.1 896.3 820.5 537.8 275.8
0.2% Yield Strength /MPa 579.2 455.1 434.4 420.6 420.6 413.7 406.8 268.9
Elongation % 44 45 42.5 45 48 34 59 117
Coefficient of Thermal Expansion µm/m⁰C 13.1 13.3 13.7 14 14.8 15.3 15.8
Thermal Conductivity /kcal/(hr.m.°C) 8.5 10.7 12.2 13.5 15 16.4 17.9 19.6
Modulus of Elasticity/ MPa 2.07 1.93 1.93 1.86 1.79 1.65 1.59

AMS 7001 Equivalent

Inconel 625 2.4856 N06625 NCF 625 ХН75МБТЮ NA 21 NC22DNB4MNiCr22Mo9Nb NiCr23Fe

AMS 7001 Uses

AMS 7001 is a popular material in the aerospace industry, where it is used to make different parts, including wing spars, fuselage frames, and bulkheads. It is also used in manufacturing helicopter blades, missile parts, and rocket casings due to its high strength-to-weight ratio. Furthermore, AMS 7001 alloy is used in vehicle armour plating, automotive wheels, and marine components.

AMS 7001 Hardness

AMS 7001 has a Brinell hardness of 145 HB. The hardness can be increased through heat treatment, making it a reliable material for aerospace applications. The material is heat-treatable, which means it can be hardened through solution heat treatment and ageing.

AMS 7001 Heat treatment

Heat treatment processes can improve the mechanical properties of AMS 7001. Solution heat treatment involves heating the alloy to a temperature of 495°C for two hours before rapidly quenching it in water. Ageing involves reheating the alloy to 180°C for 24 hours to allow precipitation hardening. These heat treatment processes increase the alloy’s strength while improving its flexibility, making it ideal for high-stress applications.


In conclusion, AMS 7001 is a reliable aerospace material with exceptional physical and mechanical properties. Its composition, density, melting point, tensile strength, and hardness make it highly suitable for different aerospace industry applications, in-vehicle armour plating, and marine components. Its heat-treatable properties make it even more desirable for high-stress applications. With all these properties, it is no wonder that AMS 7001 is highly sought after in the aerospace industry.

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