ThePipingMart Blog Grades AMS 5640 Stainless Steel – Properties, Composition, Uses

AMS 5640 Stainless Steel – Properties, Composition, Uses

AMS 5640

AMS 5640 is a high-strength stainless steel alloy with superior corrosion resistance and durability. It is frequently used in demanding applications where strength and performance are paramount. This alloy is designed for harsh environments, making it an ideal choice for marine and aerospace industries. Its exceptional strength makes it popular for machine parts, fasteners, and shafts.

What is AMS 5640?

AMS 5640 ( also known as 303 Stainless steel) is a stainless steel alloy with high strength and excellent corrosion resistance. This metal is widely used in industries such as aerospace and automotive, where tough and durable materials are essential for efficient performance. Classified under the type 304 family, AMS5640 contains chromium and nickel, giving it unique properties. Additionally, it has been thermally treated to achieve high tensile strength and durability. Few options are as reliable when selecting materials that can handle harsh environments and loads as AMS 5640. As an expert in materials science and engineering, choosing AMS 5640 for your project will yield outstanding results.

What Form is AMS 5640 Available at Piping Mart?

  • Nuts
  • Bars
  • Bolts
  • Pipe Fittings
  • Screw
  • Tubing
  • Flanges
  • Fasteners
  • Channels
  • Sheet Plates
  • Forged Fittings

AMS 5640 Composition

AMS 5640 is a widely recognized standard stainless steel grade used in various applications. As an expert in materials engineering, I can attest that this composition of austenitic steel offers excellent corrosion resistance, high strength, and toughness. Its versatility and superior performance make it ideal for aerospace, medical, and marine industries. The carefully balanced blend of elements such as chromium, nickel, and molybdenum provides impressive chemical properties and enhances this alloy’s durability and lifespan. The composition of AMS5640 is a testament to the innovation and precision engineering that goes into developing high-quality materials in today’s technological landscape.


AMS 5640

















AMS 5640 Physical Properties

AMS 5640 is a type of stainless steel that is commonly used in a variety of industries. As an expert in materials science, I can testify to the impressive physical properties of this alloy. AMS5640 possesses exceptional strength and durability, making it ideal for corrosion and wear resistance applications. In addition, it exhibits excellent machinability and can be easily formed into various shapes and sizes. Whether you’re in the aerospace, automotive, or medical industry, AMS 5640 is a top choice for meeting your performance requirements. So if you’re looking for high-quality stainless steel that delivers unmatched physical properties, you can’t go wrong with AMS 5640.




8.03 kg/m3

Melting Point


Modulus of Elasticity

193 GPa

Electrical Resistivity

0.72 x 10-6 Ω.m

Thermal Conductivity

16.3 W/m.K

Thermal Expansion

17.3 x 10-6/K

AMS 5640 Mechanical Properties

Mechanical properties are an important factor to consider when choosing materials for various applications. One such material is AMS 5640sheets , stainless steel with excellent strength and corrosion resistance. Its mechanical properties include high tensile and yield strength and good ductility and toughness. For applications requiring toughness at low temperatures, AMS5640 plates is an ideal choice. Furthermore, it has been shown to have superior resistance to stress-corrosion cracking compared to other types of stainless steel. As an expert in materials science and engineering, I recommend considering 5640 AMS for applications requiring excellent mechanical properties and corrosion resistance.


AMS 5640

Tensile Strength (MPa)

500-750 MPa

Proof Stress (MPa)

190 Min MPa

Elongation A5 mm

35 Min %

Hardness Brinell 230 Max HB

AMS 5640 Equivalent











AMS 5640 Uses

AMS 5640 is a type of stainless steel commonly used in various industrial applications. This alloy is known for its high corrosion resistance and excellent mechanical properties, making it a popular choice for manufacturing parts and components that can withstand harsh conditions. AMS 5640 is particularly useful in aerospace, defence, and automotive industries because it can maintain strength and integrity even at extreme temperatures. With its exceptional performance characteristics, this alloy is widely recognized as one of the most versatile and dependable materials in the market today. As an expert in the field, AMS 5640 is an indispensable component in various industries where reliability and durability are paramount.

AMS 5640 Hardness

As an expert in metal alloys, I can confidently say that AMS 5640 steel is a highly desirable and durable material. Its hardness, strength, and corrosion resistance make it an ideal choice for various applications, including aerospace components, marine hardware, and chemical processing equipment. Its ability to maintain high performance in hostile environments sets it apart from other stainless steel grades. For instance, it can withstand extreme temperatures, pressure, and exposure to corrosive chemicals without compromising its structural integrity. In short, AMS 5640 steel is a reliable, long-lasting material that withstands the toughest conditions.

AMS 5640 Heat treatment

Heat treatment is a crucial process in enhancing the performance of AMS 5640, a type of stainless steel used in various applications. By subjecting the metal to specific temperatures, we can modify its microstructure and improve its mechanical properties, such as hardness, strength, and durability. As an expert in this field, I can attest that the heat treatment process requires careful attention to detail to ensure consistent and repeatable results. It also involves selecting the right method, duration, and temperature range based on the desired material properties and intended use. In short, heat treatment is not just about applying heat – it is a precise and complex process that requires in-depth knowledge and experience to perform accurately.

AMS 5640 Density

The density of AMS 5640 is a fascinating topic that has garnered much attention among metallurgists and engineers alike. This material, also known as Type 316L stainless steel, is widely used in various industrial applications due to its excellent corrosion resistance properties, high-temperature performance, and superb strength. Its density is an essential factor in mechanical components and structures’ design and manufacturing processes. As a result, experts are always looking for new ways to optimize and improve the density of AMS 5640 for more efficient and reliable operations. The density of AMS 5640 is a crucial metric and an exciting area of research that promises to change the world of engineering and metalworking forever.


The conclusion of AMS 5640 marks a significant milestone for the aerospace industry. This material standard sets the bar for the quality and reliability of stainless steel in critical applications, such as aircraft engines and landing gear. As an expert in the field, I can attest to the rigorous testing and evaluation to determine compliance with this standard. Every aspect of the material is scrutinized, from its chemical composition to its mechanical properties, ensuring that it meets the demands of modern aviation.

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