ThePipingMart Blog Grades AISI 8615 Alloy Steel (UNS G86150) – Composition, Properties and Uses

AISI 8615 Alloy Steel (UNS G86150) – Composition, Properties and Uses

AISI 8615 Steel

AISI 8615 steel is a low-alloy chromium, molybdenum, and manganese steel designed for various industrial applications. The UNS G86150 has long been favored for its dependability and its ability to withstand extreme temperatures, making it an ideal choice for many mechanical components. AISI 8615 Alloy Steel, also known as UNS G86150 or simply AISI 8615 Steel, is a low alloy steel commonly used in the automotive industry. It exhibits excellent toughness and strength, making it an ideal material for applications that require high load-bearing capacity. The chemical composition of AISI 8615 Steel includes elements such as chromium, nickel, and molybdenum, which contribute to its exceptional properties. Additionally, SAE-AISI 8615 Steel is known to have good weldability, allowing for ease of fabrication. From its composition to properties, AISI 8615 Alloy Steel is a versatile material trusted by engineers and manufacturers across various industries. In this blog post, we’ll take a look at the different uses of 8615 Alloy Steel and how you can leverage its properties to your advantage.

What Forms of AISI 8615 is Available at Piping Mart?

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

AISI 8615 Composition

Element Content (%)
Iron, Fe Balance
Manganese, Mn 0.70-0.90
Nickel, Ni 0.40-0.70
Chromium, Cr 0.40-0.60
Phosphorous, P 0.035 (max)
Silicon, Si 0.15-0.30
Molybdenum, Mo 0.15-0.25
Carbon, C 0.13-0.18
Sulfur, S 0.04 (max)

AISI 8615 Physical Properties

Properties Metric Imperial
Density 7.7 – 8.03 g/cm3 0.278 – 0.290 lb/in³

AISI 8615 Mechanical Properties

Properties Metric Imperial
Modulus of elasticity 190-210 GPa 27557-30458 ksi
Poissons ratio 0.27 – 0.30 0.27-0.30

AISI 8615 Equivalent

  • AMS 6270
  • AMS 6270G
  • AMS 5333
  • ASTM A29 (8615)
  • ASTM A322 (8615)
  • ASTM A331 (8615)
  • ASTM A506 (8615)
  • ASTM A507 (8615)
  • ASTM A519 (8615)
  • ASTM A752 (8615)
  • ASTM A829
  • ASTM A505
  • SAE J1397 (8615)
  • SAE J770

AISI 8615 Uses

AISI 8615 Alloy Steel is a versatile material that has a wide range of uses across different industries. Its exceptional strength, durability, and toughness make it ideal for manufacturing various high-performance parts and components. This alloy steel is commonly used to produce industrial tools, gears, shafts, and machinery parts. It is also widely utilized in the automotive and aerospace industries, where its ability to withstand high temperatures and extreme pressure is valuable.

AISI 8615 Uses in Industries

Automotive Industry

AISI 8615 is commonly used in the automotive industry to manufacture gears, shafts, and suspension parts. This high-strength steel offers excellent fatigue resistance and can withstand heavy loads, making it ideal for vehicle use.

Construction Industry

In the construction industry, AISI 8615 fabricates structural components such as beams, columns, and trusses. Its high strength-to-weight ratio makes it a popular choice for building structures that must withstand heavy loads.

Aerospace Industry

AISI 8615 is also widely used in the aerospace industry for manufacturing aircraft components such as landing gear, engine mounts, and structural parts. Its high strength and toughness make it suitable for critical applications where safety is paramount.

Defense Industry

The defence industry also utilizes AISI 8615 for manufacturing armoured vehicles, tanks, and other military equipment. Its ability to withstand ballistic impacts and its high strength make it a preferred material for these applications.

Oil and Gas Industry

In the oil and gas industry, AISI 8615 is commonly used to manufacture drilling equipment such as drill bits and pipes due to its high wear resistance and toughness. It is also used in pipelines and offshore structures that require strength and durability.

Industrial Machinery

AISI 8615 finds its application in various industrial machinery such as cranes, excavators, and mining equipment due to its exceptional strength and toughness. It can withstand heavy loads without deforming or breaking, making it an ideal material for these types of machinery.

AISI 8615 Corrosion Resistance

One of the most important properties of AISI 8615 steel is its corrosion resistance. This alloy is highly resistant to oxidation and other forms of corrosion, which makes it ideal for use in environments where exposure to moisture or other corrosive elements is unavoidable. Additionally, the alloy’s low carbon content helps minimize the risk of galvanic corrosion when used with dissimilar metals. With proper maintenance, components made from AISI 8615 will retain their integrity even after years of operation in challenging environments.

AISI 8615 Heat Resistance

Another key feature of AISI 8615 is its heat resistance. The alloy’s chromium-molybdenum composition gives it excellent high-temperature strength and allows it to be used for applications that require frequent exposure to elevated temperatures without compromising performance or durability. This makes it an ideal choice for components subjected to high temperatures, such as engine blocks, exhaust systems, and boilers/heat exchangers.

AISI 8615 Heat Treating & Machining

AISI 8615 can also be easily machined or heat treated if desired. When machined properly, this alloy can produce parts with precise dimensions and smooth finishes. The same goes for heat treating; when done correctly, this process can impart improved strength and wear resistance to components made from AISI 8615 without compromising their dimensional stability or accuracy. Heat treatment may also be used to increase toughness or reduce fatigue life, depending on the application requirements at hand.


By leveraging the unique properties of AISI 8615 steel in various applications, you can benefit from improved performance as well as increased reliability over time. Its corrosion resistance makes it suitable for use in wet environments, while its heat resistance allows it to handle extreme temperatures with ease. Additionally, its machinability ensures you’ll always get consistent results when producing parts out of this alloy, while its heat-treating capabilities give you extra flexibility when needed. All these features make AISI 8615 an ideal choice for any project requiring exceptional performance and reliability over time.

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