ThePipingMart Blog Grades AMS 5674 Stainless Steel – Composition, Properties, and Uses

AMS 5674 Stainless Steel – Composition, Properties, and Uses

AMS 5674

AMS 5674 is a superalloy that offers excellent toughness and oxidation resistance, making it ideal for applications in the aerospace industry. This alloy is highly resistant to high temperatures, corrosive environments, and wear and tear. In this article, we will explore everything you need to know about AMS 5674material, which includes its composition, physical and mechanical properties, uses, hardness, and heat treatment.

What is AMS 5674?

Regarding high-stress applications, few materials can match the resilience of AMS 5674 (also known as 347 Stainless Steel). This specialized steel alloy boasts impressive properties, including exceptional toughness, corrosion resistance, and creep strength. As such, it is a mainstay in the aerospace and defence industries, where it is used in everything from fighter jet engines to missile components. But what sets AMS5674 apart from other high-performance alloys? For one thing, its ability to withstand extreme temperatures without compromising its structural integrity. Whether operating in sub-zero conditions or facing intense heat, AMS5674 is a reliable choice for demanding applications.

What Form is AMS 5674 Available at Piping Mart?

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

AMS 5674 Composition

AMS 5674 wire is a nickel-based superalloy. It contains various elements, such as nickel, chromium, molybdenum, cobalt, and iron. The composition of AMS 5674 plate is designed to provide the alloy with high strength, excellent corrosion resistance, and good flexibility. To improve its overall properties, the alloy also contains small amounts of other elements like titanium, aluminium, and tungsten.

Element AMS 5674
Carbon 0.08
Chromium 17.0-19.0
Nickel 9.0-13.0
Manganese 2.00
Silicon 0.75
Phosphorus 0.045
Sulfur 0.030
Niobium 10 x C min / 1.00 max

AMS 5674 Physical Properties

AMS 5674 material possesses remarkable physical properties, making it a highly desirable material for various industries. The AMS 5674 has a density of 8.1 g/cm3 and can withstand extremely high temperatures up to 1100°C. This property makes it useful in gas turbine engines, where temperatures can reach up to 1000°C. AMS 5674 also exhibits excellent corrosion resistance against various chemicals, including sulfuric and hydrochloric acid.

Physical Properties
Density ( ) 7.93
Melting point (°C ) 1400-1425

AMS 5674 Mechanical Properties

AMS 5674 sheet has exceptional mechanical properties that make it suitable for various applications. The alloy has a high tensile strength of 2075 MPa and a yield strength of 1540 MPa. The elongation of the alloy is about 20%, making it relatively ductile. Its fatigue strength is 595 MPa, which is ideal for applications with repeated loading and unloading cycles.

Proof Stress 0.2% (MPa) 205
Tensile strength (MPa) 515
Elongation A5 (%) 40
Hardness HB: 201
HRB: 92

AMS 5674 Uses

AMS 5674 is widely used in the aerospace industry. The alloy is commonly used in gas turbine engines, rocket engines, and aircraft engine components. Its high-temperature resistance, excellent corrosion resistance, and good flexibility make it ideal for these applications. It is also used in chemical processing, where it can withstand severe corrosive environments.

AMS 5674 Hardness

AMS 5674 plate has high hardness, making it ideal for applications where wear resistance is essential. Its Rockwell C hardness is typically in the range of 41-45. This property makes it useful in manufacturing tools, dies, and cutting equipment.

AMS 5674 Heat Treatment

AMS 5674 tube can undergo various heat treatment processes depending on the desired properties. Solution treatment, followed by ageing, improves its mechanical properties, such as strength and flexibility. Other heat treatments, such as annealing and stress relieving, reduce residual stresses and improve machinability.


AMS5674 is a high-performance superalloy with excellent properties, making it ideal for numerous applications, especially in the aerospace and chemical processing industries. Its exceptional mechanical, physical, and corrosive properties make it suitable for high-temperature environments, while its high hardness ensures it can withstand wear and tear. Undoubtedly, AMS 5674 material is a versatile material with many applications, and understanding how its composition, physical and mechanical properties, uses, hardness and heat treatment can help you unlock its full potential.

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