ThePipingMart Blog Grades AMS 5732 Stainless Steel Alloy – Composition, Properties, and Applications

AMS 5732 Stainless Steel Alloy – Composition, Properties, and Applications

AMS 5732

AMS 5732 is a type of stainless steel commonly used in aerospace and other applications requiring exceptional strength, corrosion resistance, and high-temperature stability. This material is known for its outstanding physical and mechanical properties, making it the go-to material for many demanding applications. In this article, we will explore the composition, properties, and applications of AMS 5732 to help you better understand this unique material.

What is AMS 5732?

AMS 5732 (also known as Stainless Steel A286) is an alloy known for its excellent strength and durability. This metal comprises elements such as nickel, chromium, and molybdenum, which work together to provide a high level of resistance to corrosion and heat. In addition, AMS 5732 metal can withstand extreme temperatures, making it a popular choice in the aerospace and defence industries. It is strong, durable, and malleable and can be easily formed into various shapes, making it versatile for various applications. Overall, AMS 5732 metal is a reliable choice for a high-quality, long-lasting material.

AMS 5732  Composition

AMS 5732 material is a nickel-based alloy that contains significant amounts of chromium, molybdenum, and tungsten. Its chemical composition typically ranges between 19-22% chromium, 12-14% molybdenum, and 3-4% tungsten. This alloy also contains small amounts of carbon, manganese, silicon, phosphorus, sulfur, and iron. It has a high nickel content, which improves its corrosion resistance and gives it excellent ductility.

Element Content (%)
Iron, Fe 54
Nickel, Ni 25.5
Chromium, Cr 14.8
Titanium, Ti 2.13
Molybdenum, Mo 1.30
Manganese, Mn 1.0
Silicon, Si 0.50
Vanadium, V 0.30
Aluminum, Al 0.18
Carbon, C 0.040
Phosphorous, P 0.020
Sulfur, S 0.015
Boron, B 0.0060

AMS 5732 Physical Properties

AMS 5732 exhibits excellent physical properties, making it suitable for high-temperature applications. It has a melting point of 1350-1450°C and a density of 8.27 g/cm3. It also has a low coefficient of thermal expansion, which means it can withstand significant temperature changes without deformation. Additionally, its electrical and thermal conductivity is relatively high compared to other alloys.

Properties Metric Imperial
Density 7.92 g/cm3 0.286 lb/in3
Melting point 1399°C 2550°F

AMS 5732 Mechanical Properties

AMS 5732 sheets boasts excellent mechanical properties, which make it highly desirable in the aerospace industry. It has a tensile strength of 950 MPa and a yield strength of 420 MPa, with a high degree of elongation and reduction in area. Its hardness is typically around 35 HRC, making it highly resistant to wear and abrasion. These properties make it an ideal material for high-stress applications where durability is critical.

Properties Metric Imperial
Tensile strength 1035 MPa 150100 psi
Yield strength (@strain 0.200%) 759 MPa 110000 psi
Elongation at break 25% 25%
Reduction of area 40% 40%
Hardness, Brinell (estimated from Rockwell C value for Brinell test with 3000 kg load/10 mm diameter ball) 304 304
Hardness, Knoop (estimated from Rockwell C value) 330 330
Hardness, Rockwell C 32 32
Hardness, Vickers (estimated from Rockwell C value) 318 318

AMS 5732 Equivalent

AISI 660 AMS 5525 AMS 5726 UNS S66286 AMS 5734
AMS 5731 AISI 662 AMS 5737 AMS 5804 AMS 5895
AMS 5853 AMS 5805 AMS 5858 DIN 1.4943 SPS M250
DIN 1.4944 GE B50T81 GE B50T12 GE B50T1181 ASTM A453 Grade 660
ASTM A638 Grade 660 stainless steel A-286

AMS 5732 Uses

AMS 5732 is primarily used in high-temperature, high-stress applications in the aerospace industry, such as turbine engines, exhaust systems, and afterburner parts. It is also used in high-performance applications requiring exceptional strength, such as turbine blades, compressor discs, and chemical reactors. Its high-temperature stability, excellent mechanical properties, and corrosion resistance make it an ideal material for these applications.

AMS 5732 Hardness

The hardness of AMS 5732 is typically around 35 HRC, which makes it highly resistant to wear and abrasion. This material can withstand significant mechanical stress and is ideal for exceptional durability applications. It is also relatively easy to machine, making it a versatile material for various applications.

AMS 5732  Heat Treatment

AMS 5732 can be heat-treated to improve its mechanical properties or to achieve a specific hardness level. The heat treatment process typically involves annealing, followed by ageing. Annealing is carried out at temperatures between 1010-1120°C, which helps to reduce stress and improve ductility. Ageing is carried out at temperatures between 720-815°C, which helps to improve the material’s hardness, strength, and resistance to wear.


AMS 5732 material is a unique nickel-based alloy valued for its excellent physical and mechanical properties. Its use in the aerospace industry and other demanding applications is a testament to its strength, corrosion resistance, and high-temperature stability. The composition of AMS 5732, its physical and mechanical properties, applications, hardness, and heat treatment were discussed in detail. AMS 5732 is a versatile material ideal for many demanding applications, and its exceptional performance has made it a go-to material in the aerospace industry.

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