ThePipingMart Blog Grades AMS 4307 Aluminum Alloy – Composition, Properties and Uses

AMS 4307 Aluminum Alloy – Composition, Properties and Uses

AMS 4307

AMS 4307 is a grade of austenitic stainless steel that finds wide use in industrial applications and is known for its excellent corrosion resistance. This alloy can be found in various products, from high-performance automotive components to aerospace parts to food processing equipment. If you’re considering using AMS 4307 in your next project, keep reading to learn about its composition, properties, and uses.

What is AMS 4307?

AMS 4307 is a high-performance steel alloy used in the aviation, aerospace, and defence industries. This alloy is known for its excellent strength-to-weight ratio and exceptional durability, making it a popular option for applications that require reliability and toughness. AMS4307 is made up of a combination of iron, chromium, and nickel, which gives it its unique properties. This alloy can withstand extreme temperatures, making it ideal for high-pressure applications. If you are looking for a material that can withstand the most demanding conditions, then AMS4307 alloy is a great choice.

AMS 4307 Composition

AMS 4307 is a member of the 300 series of stainless steels and is made primarily of iron, with nickel, chromium, and manganese additions. Carbon is kept at a low level to prevent the formation of carbides and ensure good weldability. This composition gives the alloy its unique combination of mechanical strength, excellent corrosion resistance, and flexibility.

AMS 4307 Physical Properties

AMS 4307 has a density of 7.93 g/cm³, typical of austenitic stainless steels. It is non-magnetic in the annealed condition but can become slightly magnetic after cold working. Its coefficient of thermal expansion is similar to that of other austenitic stainless steels, and its specific heat capacity is relatively high. This alloy also has a high electrical conductivity and thermal conductivity.

AMS 4307 Mechanical Properties

AMS 4307 has excellent mechanical properties, including high tensile and yield strength, good elongation, and high fatigue resistance. Its strength is comparable to other high-performance austenitic stainless steel, making it a popular choice for critical applications. The alloy can be easily formed, welded, and machined with no significant loss in its mechanical properties.

AMS 4307 Uses

The unique properties of AMS 4307 make it suitable for numerous industrial applications. It is commonly used in chemical processing equipment, food processing machinery, and oil and gas refining equipment. Its high-temperature resistance is also found in aerospace components, such as fuel tanks, engine parts, and exhaust systems. Other uses include automotive components, medical implants, and architectural applications.

AMS 4307 Hardness

The hardness of AMS 4307 depends on the heat treatment and the cold working it has undergone. The alloy can be annealed to increase its flexibility and reduce its hardness. The hardness of the annealed material is typically around 88 HRB. Cold-working the alloy can increase its strength and hardness up to 40 HRC.

AMS 4307 Heat Treatment

AMS 4307 can be annealed at 1040-1120°C, followed by air cooling or water quenching. Annealing can help to improve the alloy’s ductility, relieve internal stresses, and reduce its hardness. The alloy can also be annealed at temperatures ranging from 1010-1120°C, followed by rapid quenching. This process can help to restore the alloy’s corrosion resistance after it has been cold-worked.


AMS 4307 is an excellent choice of material for applications requiring superior corrosion resistance and high strength. Its unique combination of properties makes it suitable for various industrial applications. AMS 4307 can be tailored to meet specific strength and hardness requirements with proper heat treatment and cold working. Whether you’re developing a new product or replacing an existing component, consider AMS 4307 for your next project.

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