ThePipingMart Blog Grades AMS 5750 Nickel Alloy – Composition, Properties, and Uses

AMS 5750 Nickel Alloy – Composition, Properties, and Uses

AMS 5750

AMS 5750 is a specialty steel alloy traditionally used to produce aircraft parts and other high-stress applications. This tough and durable alloy has been engineered to provide exceptional strength and resistance to wear and corrosion. You’re in the right place if you’ve never heard of AMS 5750. This blog post will explore AMS 5750’s chemical composition, physical and mechanical properties, and common applications.

What is AMS 5750?

AMS 5750 (also known as Hastelloy C276 Alloy)s an industry-standard specification for high-strength, corrosion-resistant steel alloys. It is commonly used in manufacturing and aerospace industries for its strength and durability. Understanding the nuances and intricacies of AMS 5750 is crucial for engineers and metallurgists, as it can greatly impact the success of their projects. With a thorough knowledge of this specification, professionals can make informed decisions and achieve optimal results in their work.

What Forms Is AMS 5750 Available at Piping Mart?

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

AMS 5750 Composition

AMS 5750 is a corrosion-resistant steel alloy typically composed of nickel, chromium, manganese, and molybdenum. Unlike other types of stainless steel, which generally contain less than 10% nickel, AMS 5750 contains up to 50% nickel, which gives it excellent corrosion resistance. The high chromium content, around 20%, gives AMS 5750 exceptional hardness, while the small addition of manganese and molybdenum enhances its strength and toughness.

Element Content (%)
Nickel, Ni 57
Molybdenum, Mo 15-17
Chromium, Cr 14.5-16.5
Iron, Fe 4-7
Tungsten, W 3-4.50
Cobalt, Co  2.50
Manganese, Mn  1
Vanadium, V  0.35
Silicon, Si  0.080
Phosphorous, P  0.025
Carbon, C  0.010
Sulfur, S  0.010

AMS 5750 Physical Properties

AMS 5750 has a specific gravity of 7.96, a melting point of 1371°C (2500°F), and a density of 0.289 lb/in3. Its thermal conductivity is around 15 BTU-in/hr-ft2-°F, while its electrical conductivity is approximately 29.4% IACS (International Annealed Copper Standard). The coefficient of thermal expansion is also low, at 6.21 µm/m-°C.

Properties Metric Imperial
Density 8.89 g/cm³ 0.321 lb/in³
Melting point 1371°C 2500°F

AMS 5750 Mechanical Properties

AMS 5750 has many mechanical properties, including exceptional strength, toughness, and flexibility. It has a tensile strength of around 170 ksi (kilopounds per square inch) and yield strength of about 110 ksi. It can withstand high temperatures of up to 980°C (1800°F), making it ideal for high-temperature applications. At room temperature, AMS 5750 has a high hardness rating of around 38 HRC.

Properties Metric Imperial
Tensile strength (@thickness 4.80-25.4 mm, 538°C/@thickness 0.189-1.00 in, 1000°F) 601.2 MPa 87200 psi
Yield strength (0.2% offset, @thickness 2.40 mm, 427°C/@thickness 0.0945 in, 801°F) 204.8 MPa 29700 psi
Elastic modulus (RT) 205 GPa 29700 ksi
Elongation at break (in 50.8 mm, @thickness 1.60-4.70 mm, 204°C/@thickness 0.0630-0.185 in, 399°F) 56% 56%
Hardness, Rockwell B (plate) 87 87

AMS 5750 Equivalents

ASTM B366 ASTM B574 ASTM B622 ASTM F467 DIN 2.4819

AMS 5750 Uses

AMS 5750 is commonly used to manufacture high-stress components in the aerospace, automotive, and chemical processing industries. Its exceptional strength and corrosion resistance make it suitable for use in parts such as gears, shafts, and valves. It is also used in welding applications and for producing wire and mesh products. AMS 5750 is an expensive material, making it still used in high-end applications.

AMS 5750 Hardness

AMS 5750 has excellent hardness properties, which make it ideal for use in applications that require components that can withstand high levels of stress, wear and corrosion. The hardness rating is determined using a simple test known as the Rockwell hardness test, which involves measuring an indenter’s penetration depth under a specified load. Typically, AMS 5750 has a Rockwell hardness rating of around 38 HRC.

AMS 5750 Heat Treatment

Heat treatment is a necessary step in the manufacture of AMS 5750 components. The most common heat treatment method for AMS 5750 is annealing, which involves heating the alloy to around 1100°C (2012°F) to soften it and make it more ductile. Once the alloy has been annealed, it can be shaped into the required shape using standard forming methods. Other heat treatment methods, such as quenching and tempering, can also be used to adjust the mechanical properties of the alloy.


AMS 5750 material is a premium steel alloy with exceptional strength and resistance to wear and corrosion. Its high nickel and chromium content and small amounts of manganese and molybdenum provide these properties. Due to these properties, this alloy is typically used to manufacture high-stress components in the aerospace, automotive, and chemical processing industries. AMS 5750 undergoes heat treatment, typically annealing, to make it more malleable and workable. This expensive and hardened material is a great option for various applications requiring stress resistance.

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