ThePipingMart Blog Grades AMS 5864 Stainless Steel – Composition, Properties, and Uses

AMS 5864 Stainless Steel – Composition, Properties, and Uses

AMS 5864

AMS 5864 is a stainless steel alloy that is widely utilized in high-temperature applications such as aerospace and petroleum industries. It boasts exceptional mechanical properties, excellent corrosion resistance, and good strength, making it the preferred choice for many manufacturing companies. This article outlines the key features of AMS 5864, including its composition, physical and mechanical properties, uses, hardness, and heat treatment.

What is AMS 5864?

AMS 5864 (also known as 13-8 PH Stainless Steel) is a wrought nickel alloy specification used to create high-strength components. Its strength, corrosion resistance, and excellent weldability characterize it, making it a popular choice in aerospace and industrial applications. This alloy can withstand high temperatures and harsh environments, making it an ideal material for aircraft engines, gas turbines, and chemical processing equipment. Reliable and durable, AMS5864 has become a staple in manufacturing high-pressure, high-temperature applications. Its unique properties and versatility have made it an essential material in modern engineering, making it a fascinating topic to explore.

AMS 5864 Composition

AMS 5864 is a corrosion-resistant nickel alloy with superior mechanical properties. The alloy contains about 20% chromium, 34% nickel, and 4.5% molybdenum, which gives it excellent corrosion resistance properties. The nickel-chromium-molybdenum content also provides superior strength and durability, making it unsuitable for use in environments with acidic solutions.

Element Content (%)
Iron, Fe 76
Chromium, Cr 12.25-13.25
Nickel, Ni 7.50-8.50
Molybdenum, Mo 2.0-2.50
Aluminum, Al 0.90-1.35
Manganese, Mn 0.10
Silicon, Si 0.10
Carbon, C 0.050
Nitrogen, N 0.010
Phosphorous, P 0.010
Sulfur, S 0.0080

AMS 5864 Physical Properties

The physical properties of AMS 5864 are as follows:

  • Density: 7.96 g/cm³
  • Melting point: 1371 °C
  • Electrical resistivity: 0.72 µΩ·m
  • Thermal conductivity: 16.3 W/m·K

 AMS 5864 Mechanical Properties

Properties Metric Imperial
Tensile strength 1620 MPa 235000 psi
Yield strength (@strain 0.200%) 1480 MPa 215000 psi
Elastic modulus 203 GPa 29443 ksi
Poisson’s ratio 0.27-0.30 0.27-0.30
Elongation at break (In 50 mm) 12.00% 12.00%
Charpy Impact 27.0 J 19.9 ft-lb
Machinability (35-40 average, based on 100 machinability for AISI 1212 steel) 35.0-40.0 35.0-40.0

AMS 5864 Equivalents

  • AISI 632
  • AMS 5629
  • AMS 5864
  • ASTM A564 (XM-13)
  • ASTM A693 (XM-13)
  • ASTM A705 (XM-13)
  • DIN 1.4534

AMS 5864 Thermal Properties

Properties Metric Imperial
Thermal expansion co-efficient (@21-95°C/69.8-203°F) 10.6 µm/m°C 5.89 µin/in°F
Thermal conductivity (in condition A, @100°C/212°F) 14.0 W/mK 97.2 BTU in/hr.ft².°F

AMS 5864 Uses

AMS 5864 sheet is a high-performance stainless steel alloy widely used in various industries such as aerospace, chemical processing, power generation, and petroleum. It is commonly used to construct engines, turbines, valves, pumps, and various structural components where strength and durability are paramount.

AMS 5864 Hardness

AMS 5864 ranges from 25 HRC when annealed to 35 HRC when heat-treated. This makes it an ideal material for use in high-stress environments where high strength, corrosion resistance, and durability are critical.

AMS 5864 Heat treatment

AMS 5864 strip can be heat treated to achieve different mechanical properties based on the desired application. The alloy can be annealed to improve its formability, which involves heating it to 1900°F and holding it for one to two hours before cooling it rapidly. The alloy can also be quenched and tempered to improve its hardness, which involves heating the material to 2050°F, quenching it in water, and then tempering it in the range of 1000°F to 1200°F.

AMS 5864 Density

AMS 5864 Density is a crucial element in the world of metallurgy. Density measures the amount of mass in a given space, and in the case of AMS 5864, density is a critical characteristic of this superalloy. AMS 5864 is used in various aviation, manufacturing, and oil and gas exploration applications. The density of AMS 5864 is determined by measuring its weight and volume, providing valuable insight into the quality of the material. A high density typically indicates good mechanical properties, strength, and corrosion resistance. Therefore, measuring the density of AMS 5864 ensures that it meets the required standards for the intended application, contributing to the safety and reliability of the end product.


AMS 5864 is a high-performance stainless steel alloy widely used in high-temperature applications. Its superior mechanical properties, excellent corrosion resistance, and good strength make it a preferred choice for many manufacturing companies. AMS 5864’s composition, physical and mechanical properties, use of hardness, and heat treatment processes have all been discussed in detail above. By understanding its features, prospective users will realize the unique benefits of incorporating AMS 5864 in their products or projects.

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