ThePipingMart Blog Grades AMS 5801 Haynes Alloy – Composition, Properties, and Uses

AMS 5801 Haynes Alloy – Composition, Properties, and Uses

AMS 5801

Regarding high-performance alloys, AMS 5801 is often touted as one of the best in the business. This premium nickel-chromium alloy is designed to meet strict aerospace specifications for demanding applications. AMS 5801’s unique composition makes it a preferred choice for high-stress environments. This blog post will dive deep into AMS 5801 and explore its composition, physical and mechanical properties, uses, hardness, and heat treatment.

What is AMS 5801?

AMS 5801 (also known as Haynes 188 Alloy) is a standard issued by the Society of Automotive Engineers (SAE) that establishes requirements for designing and manufacturing carbon steel tubing. It also sets acceptable dimensional tolerances, chemical composition, mechanical properties, testing requirements, quality control guidelines and other necessary information related to its application in aerospace hydraulic systems.

What Form Is AMS 5801 Available at Piping Mart?

  • Haynes 188 Bars

AMS 5801 Composition

AMS 5801 is a premium-quality alloy with a nickel-chromium-iron base further strengthened by titanium and aluminium additions. The alloy has a lower carbon content than similar alloys, making it more ductile and less prone to cracking under stress. AMS 5801 also contains lower levels of sulfur, which reduces the risk of stress corrosion cracking. The alloy’s unique composition makes it an excellent choice for high-stress applications, especially in the aerospace industry.

Element Content (%)
Cobalt, Co ≥ 37
Nickel, Ni 22
Chromium, Cr 22
Tungsten, W 14
Iron, Fe ≤ 3
Manganese, Mn ≤ 1.25
Silicon, Si ≤ 0.50
Carbon, C ≤ 0.15
Lanthanum, La 0.040
Phosphorous, P 0.020
Sulfur, S 0.015

AMS 5801 Physical Properties

AMS 5801 has excellent resistance to oxidation, corrosion, and acid environments. The alloy’s physical properties make it ideal for high-temperature and high-stress environments. The melting point of AMS 5801 is approximately 1,400°C, making it suitable for high-heat applications. The alloy also has a high specific heat capacity and thermal conductivity, which means it can dissipate heat quickly.

Properties Metric Imperial
Density 8.9 g/cm3 0.324 lb/in3
Melting point 1330°C 2425°F

AMS 5801 Mechanical Properties

AMS 5801 bars has a high yield strength and tensile strength, which makes it suitable for use in environments where high-stress loads are placed on the material. The alloy has excellent fatigue resistance properties and can withstand prolonged use in high-stress applications. The toughness of AMS 5801 is also impressive, and the alloy can absorb shocks and impacts without cracking or failing.

AMS 5801 Equivalent

  • AMS 5608
  • AMS 5772
  • GE B50A712
  • GE B50TF74
  • GE B50TF74A
  • PWA 1042

AMS 5801 Uses

AMS 5801 is commonly used in the aerospace industry. Its high-stress and high-temperature properties make it an excellent choice for aircraft engine components such as turbine blades, combustion chambers, and exhaust systems. The alloy also produces high-end gas turbines, power generation equipment, and chemical processing plants. The excellent corrosion resistance of AMS 5801 makes it an ideal material for use in seawater environments such as offshore drilling platforms and submarine structures.

AMS 5801 Hardness

AMS 5801 has a high hardness level, making it an excellent candidate for use in heavy-duty industrial applications. The alloy’s hardness enables it to resist wear and tear from prolonged use and exposure to abrasive materials. In addition, AMS 5801’s hardness helps to maintain its shape and integrity under high-stress loads.

AMS 5801 Heat treatment

AMS 5801 bars can be heat-treated to enhance properties such as mechanical strength and hardness. Heat treatment involves heating the material to a specific temperature, holding it at that temperature for a certain duration, and then cooling it at a specific rate. Heat treatment can alter the alloy’s microstructure, improving its physical and mechanical properties.


AMS 5801 material is a premium, high-performance alloy trusted by the aerospace industry and other high-stress applications. Its excellent physical and mechanical properties and unique composition make it an ideal choice for use in harsh environments where other materials would fail. Whether it’s turbine blades, chemical processing equipment, or offshore platforms, AMS 5801 is the go-to material for demanding and high-stress applications.

Related Post