ThePipingMart Blog Grades AISI 6150 Alloy Steel (UNS G61500) – Composition, Properties and Uses

AISI 6150 Alloy Steel (UNS G61500) – Composition, Properties and Uses

AISI 6150 Steel

AISI 6150 steel is often used in a variety of industries for its strength, machinability, and corrosion resistance properties. UNS G61500 is an alloy that contains chromium and manganese, making it a great choice for applications that require heat treatment and heat resistance. It also has excellent machinability characteristics and can be readily formed into the desired shape with minimal effort. AISI 6150 Alloy Steel, or UNS G61500, is a popular steel option for various applications. Its composition comprises high levels of chromium and vanadium, giving it good toughness, wear resistance, and strength properties. The AISI 6150 steel is often used to manufacture parts for machinery, springs, and even heavy-duty truck parts. Its impressive mechanical properties make it a reliable option for these applications, and it has been a favourite among manufacturers for years. Additionally, this steel can be heat-treated to achieve desired mechanical characteristics for specific applications. Overall, AISI 6150 Alloy Steel is a versatile material with unique composition and properties, making it an excellent choice for various industries. This blog will discuss how 6150 Alloy Steel can benefit your business and why it makes sense to use this particular material in your next project.

What Forms of AISI 6150 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 6150 Composition

Element Content (%)
Iron, Fe 97.095 – 97.72
Chromium, Cr 0.800 – 1.10
Manganese, Mn 0.7 – 0.9
Carbon, C 0.480 – 0.530
Silicon, Si 0.150 – 0.3
Vanadium, V ≥ 0.150
Sulfur, S ≤ 0.04
Phosphorous, P ≤ 0.0350

AISI 6150 Physical Properties

Properties Metric Imperial
Density 7.85 g/cm3 0.284 lb/in³

AISI 6150 Mechanical Properties

Properties Metric Imperial
Tensile strength, ultimate 670 MPa 97200 psi
Tensile strength, yield 415 MPa 60200 psi
Izod impact 27 J 19.9 ft-lb
Modulus of elasticity 190-210 GPa 27557-30458 ksi
Shear modulus (typical for steel) 80 GPa 11600 ksi
Bulk modulus (typical for steel) 140 GPa 20300 ksi
Poissons ratio (calculated) 0.27 – 0.30 0.27-0.30
Elongation at break (in 50 mm) 23% 23%
Hardness, Brinell 197 197
Hardness, Vickers (converted from Brinell hardness) 207 207
Hardness, Knoop (converted from Brinell hardness) 219 219
Hardness, Rockwell B (converted from Brinell hardness) 92 92
Hardness, Rockwell C (converted from Brinell hardness, value below normal HRC range, for comparison purposes only) 13 13
Machinability (annealed and cold drawn. Based on 100% machinability for AISI 1212 steel) 55 55

AISI 6150 Thermal Properties

Properties Metric Imperial
Thermal conductivity 46.6 W/mK 323 BTU in/hr.ft2. °F

AISI 6150 Equivalent

AMS 6448 AMS 6455C ASTM A519 (6150) SAE J404 (6150) SS 2230
AMS 6448C AMS 7301 ASTM A752 (6150) SAE J412 (6150) B.S. 735 A 50
AMS 6450 ASTM A29 (6150) ASTM A829 AFNOR 50 CV 4 B.S. En. 47
AMS 6450C ASTM A322 (6150) MIL S-8503 DIN 1.8159
AMS 6455 ASTM A331 (6150) SAE J1397 (6150) UNI 5OCrV 4

AISI 6150 Uses

AISI 6150 steel is an alloy that is commonly used in a variety of applications. It is characterized by its toughness and strength and has been used heavily in the automotive, agricultural, and defence industries. In the automotive industry, it can be found being used to create crankshafts and other parts that require strong but flexible metal alloys to withstand the pressures of everyday usage. In the agricultural sector, this type of steel is often seen as a staple for use in ploughshares, harrow discs, and cutting edges across fields of crops. And when it comes to defence applications, AISI 6150 steel is often times employed for creating a wide range of weapons, from melee weapons like swords and knives to bayonets and even firearms barrels that need high levels of strength and durability.

AISI 6150 Uses in Industries

Automotive Industry

One of the most common uses for AISI 6150 steel is in the automotive industry. This steel’s high strength and durability make it ideal for use in components such as suspension systems, engine parts, and gears. Its ability to withstand high stress and fatigue makes it a popular choice for race car chassis.

Aerospace Industry

AISI 6150 steel is also widely used in the aerospace industry due to its high strength-to-weight ratio. This makes it an excellent choice for aircraft landing gear, engine components, and structural parts that require both strength and lightweight.

Oil and Gas Industry

In the oil and gas industry, AISI 6150 steel is commonly used to make drill collars, essential for drilling deep into the earth’s surface. The high tensile strength of this steel allows it to withstand the intense pressure and torque involved in drilling operations.

Construction Industry

The construction industry also utilizes AISI 6150 steel in various applications. Its excellent toughness and wear resistance make it suitable for use in heavy equipment parts, such as bulldozer blades and crane hooks. It is also used in building structures that require high load-bearing capacity.

Tool Manufacturing

Due to its hardness and abrasion resistance, AISI 6150 steel is commonly used in tool manufacturing processes such as forging, stamping, and die cutting. It is often used to make tools such as punches, chisels, and hammers that require high-impact strength.

AISI 6150 Corrosion Resistance

AISI 6150 steel offers superior corrosion resistance properties thanks to its high levels of chromium and manganese. This makes it ideal for use in areas where there is frequent exposure to moisture or other corrosive elements. Additionally, the alloy’s hardness helps resist wear from abrasion or impact damage. This increases the longevity of any part made from AISI 6150 steel compared to other materials with lower corrosion resistance properties.

AISI 6150 Heat Resistance

AISI 6150 steel has excellent heat resistance properties due to its high chromium content. This allows parts made from this alloy to withstand extreme temperatures without losing their strength or durability over time. Additionally, this property also makes it an ideal choice for applications that involve welding since welds will not lose their strength at higher temperatures when using AISI 6150 steel as the base material.

AISI 6150 Machining

AISI 6150 steel offers great machinability characteristics thanks to its low carbon content and good toughness values. This means that parts made from this alloy can be easily machined into complex shapes with minimal effort when compared with some other materials on the market today. Additionally, this property helps reduce costs associated with manufacturing complex parts since fewer tools are needed during the production process when using AISI 6150 as a base material for your projects.


AISI 6150 is an excellent option for businesses looking for a strong yet corrosion-resistant material that can withstand extreme temperatures without compromising on strength or durability over time. Its excellent machining characteristics make it easy to form into complex shapes while still reducing costs associated with production processes significantly compared to other materials on the market today. For these reasons, businesses should seriously consider using AISI 6150 in their next project if they want maximum performance at an affordable price point!

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