ThePipingMart Blog Grades AMS 6417 Alloy Steel – Composition, Properties and Uses

AMS 6417 Alloy Steel – Composition, Properties and Uses

AMS 6417

When selecting the appropriate material for a project, choosing one that is strong, durable, and fit for purpose is important. One material that meets these requirements is AMS 6417. This alloy steel boasts excellent mechanical properties, making it highly sought after in various industries. In this blog post, we will explore AMS 6417 in detail, from its composition to its uses and heat treatment processes.

What is AMS 6417?

AMS 6417 (also known as Alloy Steel 4340) metal is a type of steel that is used in a variety of applications across industries. This type of metal is known for its superior strength and durability, making it ideal for manufacturing parts and components that must withstand high stress and wear. It is often used in aerospace, defence, and automotive applications and in producing high-performance tools and equipment. AMS 6417 metal is also known for its excellent machinability, meaning that it can be easily formed and shaped into the desired configuration. Overall, this steel is popular for those seeking high-quality, reliable materials to withstand the rigours of demanding environments.

What Form is AMS 6417 Available at Piping Mart?

  • Bars

AMS 6417 Composition

AMS 6417 is a low-alloy steel with a high nickel, chromium, and molybdenum level. It also has a low carbon content, making it highly corrosion-resistant and oxidant-resistant. Additionally, AMS 6417 is often alloyed with small amounts of other elements, such as vanadium and titanium, to enhance its material properties.

Element Content (%)
Iron, Fe 93.4 – 94.8
Nickel, Ni 1.65 – 2.0
Silicon, Si 1.45 – 1.80
Chromium, Cr 0.70 – 0.95
Manganese, Mn 0.65 – 0.90
Carbon, C 0.40 – 0.460
Phosphorous, P 0.035
Molybdenum, Mo 0.30 – 0.45
Vanadium, V 0.050
Sulfur, S 0.040

AMS 6417 Physical Properties

The physical properties of AMS 6417 make it an excellent choice for high-stress applications. It has a high tensile strength and a low coefficient of thermal expansion. Moreover, it can withstand high temperatures and has excellent wear resistance. The material also boasts a desirable combination of toughness and flexibility.

Properties Metric Imperial
Density 7.87 g/cm3 0.284 lb/in³
Melting point 1422°C 2590°F

AMS 6417 Mechanical Properties

The mechanical properties of AMS 6417 are equally impressive. It has a high yield strength, which means it can withstand pressure and tension without deforming. The material also exhibits good fatigue resistance and impact toughness. AMS 6417 can be easily machined and welded, making it a popular choice for manufacturing components that require precision and durability.

Properties Metric Imperial
Shear modulus (typical for steel) 80 GPa 11600 ksi
Elastic modulus 205 GPa 29700 ksi
Poisson’s ratio 0.28 0.28

AMS 6417 Equivalent

  • AMS 6417
  • AMS 6419
  • ASTM A579 (32)
  • ASTM A646 (300M-8)
  • MIL S-8844 (3)
  • MIL S-8844 Class 2

AMS 6417 Uses

AMS 6417 is used across various industries, including aerospace, defence, and automotive. Its strength and durability make it suitable for various applications such as gears, shafts, and aircraft landing gear components. AMS 6417 is also ideal for large industrial machinery and equipment that withstand high pressure and constant wear and tear.

AMS 6417 Hardness

AMS 6417 has a high hardness level, which can be further enhanced through heat treatment processes. The material can be treated with various techniques, including annealing, normalizing, quenching and tempering. These processes alter the material’s microstructure and improve its mechanical and physical properties. Heat treatment also helps enhance the material’s corrosion resistance and toughness.

AMS 6417 Heat Treatment

Heat treatment is a critical process for ensuring the reliability and durability of AMS 6417. This high-performance alloy steel, commonly used in applications requiring exceptional strength and toughness, requires specific thermal treatments to achieve its maximum potential. Heat treatment involves heating the steel to a precise temperature, holding it at that temperature for a specified time, and then rapidly cooling it to achieve the desired properties. Different heat treatment methods, such as annealing, quenching, and tempering, tailor AMS 6417’s mechanical properties to meet specific design requirements. Heat treatment is crucial in producing AMS 6417, essential for achieving optimal performance and durability.


AMS 6417 material is a highly versatile and durable material that has found widespread use in numerous industries. Its impressive mechanical and physical properties, combined with its resistance to corrosion and wear, make it ideal for critical applications. The right material is essential for a successful project, and AMS 6417 promises quality, strength, and endurance.

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