If you’re in the aerospace or gas turbine industry, you’ve likely heard of AMS 5731. It’s a popular stainless steel alloy that has a range of excellent mechanical and physical properties. In this blog post, we’ll delve into what AMS 5731 is, its composition, properties, and applications.
What is 5731?
AMS 5731 (also known as Stainless Steel A286) is a high-performance metal alloy engineered to withstand extreme temperatures and pressure. This alloy is popular among aerospace, marine, and defence manufacturers. What sets AMS5731 apart from other metal alloys is its exceptional strength, durability, and resistance to corrosion. This makes it the ideal material for high-performance applications, such as turbine engine components, rocket motor cases, and missile nose cones. With its unique properties, AMS5731 has become an essential component in producing cutting-edge technology and equipment that pushes the limits of human innovation.
AMS 5731 Composition
AMS 5731 sheet is a type of stainless steel alloy that contains nickel, chromium, molybdenum, and traces of other elements. It has a low carbon content, giving it desirable properties. Its composition is as follows: 19% to 21% chromium, 9% to 10.5% nickel, 5% to 6.5% molybdenum, 0.05% to 0.15% carbon, 0.75% maximum manganese, 0.035% maximum phosphorus, and 0.03% maximum sulfur.
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 5731 Physical Properties
The physical properties of AMS 5731 tubing include a density of 0.288 lb/in3, a melting range of 2625-2750°F, and thermal conductivity of 71.7 BTU/hr ft °F. It is also non-magnetic and has a coefficient of thermal expansion of 9.6 µm/m °C.
Properties | Metric | Imperial |
---|---|---|
Density | 7.92 g/cm3 | 0.286 lb/in3 |
Melting point | 1399°C | 2550°F |
AMS 5731 Mechanical Properties
AMS 5731 material’s mechanical properties are impressive, making it a popular choice for aerospace and gas turbine applications. Its ultimate tensile strength is 195 ksi, with a yield strength of 170 ksi. AMS 5731 also has a high percentage of elongation (30%), ductility, and impact resistance. Additionally, it retains its strength at high temperatures of up to 1500°F.
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 5731 Equivalent
AISI 660 | AMS 5525 | AMS 5726 | AMS 5732 | AMS 5734 |
UNS S66286 | 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 5731 Uses
AMS 5731 bars is widely used in the aerospace and gas turbine industry due to its excellent mechanical and physical properties. It’s often used for parts that require good corrosion resistance, high strength, and temperature resistance. It’s commonly found in turbine engine components, exhaust systems, manifolds, and flanges. The oil and gas industry also uses AMS 5731 for valves, pumps, and other components.
AMS 5731 Hardness
AMS 5731 has a 302-388 HB hardness, which is excellent for a stainless steel alloy. Its hardness makes it ideal for applications requiring high wear resistance, such as shafts and gears.
AMS 5731 Heat Treatment
AMS 5731 can be heat-treated to enhance strength, durability, and ductility. It can be annealed at 1950°F for 30 minutes, followed by rapid air cooling to achieve the desired mechanical properties.
Conclusion:
AMS 5731 material is a popular stainless steel alloy with excellent mechanical and physical properties that make it ideal for the aerospace and gas turbine industry. This blog post discusses its composition, properties, and applications. Its impressive strength, ductility, and high-temperature resistance make it an excellent alloy for demanding applications. So, if you’re in the aerospace or gas turbine industry, AMS 5731 is an alloy you should consider for your next project.
Meet Bhavesh, a seasoned blogger with a wealth of knowledge and experience. From metal products manufacturing to retail, Bhavesh has a diverse background in various industries and is dedicated to sharing his insights and expertise with readers.