ThePipingMart Blog Grades AISI 8617 Alloy Steel (UNS G86170) – Composition, Properties and Uses

AISI 8617 Alloy Steel (UNS G86170) – Composition, Properties and Uses

AISI 8617 Steel

AISI 8617 steel is a low-alloy steel that offers a combination of strength, hardness, and ductility. 8617 Alloy Steel is often used in the machining and fabrication of components because it has excellent corrosion resistance, heat resistance, and wear resistance. AISI 8617 Alloy Steel, also known as UNS G86170 or SAE-AISI 8617 steel, is a high-strength and low-alloy. This alloy is composed of carbon, manganese, nickel, phosphorus, sulfur, and silicon, making it an excellent choice for various industrial applications. As with most alloy steel types, the properties of AISI 8617 can be altered through heat treatment. This steel can be quenched and tempered, increasing hardness and tensile strength. One of the favourable properties of AISI 8617 is its excellent machinability, which makes it ideal for manufacturing gears and requiring high-precision components. Overall, AISI 8617 Alloy Steel is a reliable and cost-effective choice for industries that require high-strength and durable materials. In this article, we’ll explore the characteristics of UNS G86170 and how it can be used in various applications.

What is AISI 8617?

AISI 8617 is an alloy steel made up of carbon, manganese, phosphorus, sulfur, silicon, molybdenum, and chromium. It has good machinability and formability properties and excellent strength and hardness levels. The material also offers good weldability with filler metals and high-strength gas tungsten arc welding (GTAW).

What Forms of AISI 8617 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 8617 Composition

Element Content (%)
Iron, Fe 98
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 0.15-0.20
Sulfur, S 0.04 (max)

AISI 8617 Physical Properties

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

AISI 8617 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 8617 Equivalent

AMS 6272 ASTM A752 AFNOR 22 NCD 2 B.S. 805 H 20
ASTM A29 ASTM A829 DIN 1.6523 B.S. 805 M 20
ASTM A322 SAE J1397 UNI 20 NiCrMo 2 AMS 6272E

AISI 8617 Steel Uses

AISI 8617 steel can be used for a variety of applications, including automotive parts such as camshafts, gears, pinions, shafts, and axles; aerospace parts such as fasteners; power generation components such as turbine blades; medical equipment such as implants; or hand tools such as wrenches. It is also commonly used to produce shafts for pumps or valves due to its excellent corrosion resistance properties.

AISI 8617 Uses in Industries

Construction Industry

AISI 8617 is commonly used in the construction industry for its high strength and durability. It is often used in structural applications such as beams, columns, and trusses. Its corrosion resistance also makes it a popular choice for outdoor structures.

Automotive Industry

The automotive industry also utilizes AISI 8617 due to its high tensile strength and impact resistance. It is commonly used in various parts of vehicles, such as engine components, chassis, and suspension systems.

Aerospace Industry

AISI 8617 is preferred in the aerospace industry due to its ability to withstand extreme temperatures and pressures. It is often used in aircraft engines, landing gear, and other critical components.

Oil and Gas Industry

In the oil and gas industry, AISI 8617 is widely used for its corrosion resistance properties. It is often used in pipelines, offshore platforms, and other equipment exposed to harsh environments.

Manufacturing Industry

The manufacturing sector also relies on AISI 8617 for its versatility and strength. It is commonly used in machinery parts, tools, and equipment for various industries such as agriculture, mining, and food processing.

AISI 8617 Heat Treatment & Corrosion Resistance

One advantage of using AISI 8617 steel is its ability to be heat treated to obtain higher strength levels while still maintaining good ductility. Heat treatment involves heating the material to a specific temperature before cooling it rapidly in order to achieve the desired result. This process can also improve wear resistance while decreasing the risk of cracking during machining operations. Additionally, AISI 8617 steel has excellent corrosion resistance, which makes it suitable for use in environments where exposure to corrosive materials could be an issue.

AISI 8617 Machining & Fabrication

Because of its good machinability properties, AISI 8617 can be easily cut into complex shapes using traditional machining methods such as turning or milling without significant issues like tool chatter or excessive burrs forming on the finished part. The material also has good formability, which allows for bending without breaking or cracking during fabrication operations like welding or punching holes in metal components.


In conclusion, AISI 8617 steel offers a unique combination of strength, hardness, ductility, and corrosion resistance, making it ideal for use in numerous applications across industries like aerospace engineering or power generation engineering where precision metal components are required. Its ability to withstand high temperatures makes it suitable for heat treatment processes which can further enhance its strength levels while maintaining good ductility properties necessary for successful fabrication operations like welding or punching holes in metal pieces without damaging them beyond repair. Finally, its excellent corrosion resistance means that parts created from this material won’t corrode when exposed to harsh environmental conditions, making them ideal for long-term use in corrosive environments like offshore oil rigs or marine vessels. So if you’re looking for an all-purpose alloy steel, then consider choosing AISI 8617!

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