ThePipingMart Blog Grades AMS 4132 Aluminum Alloy – Composition, Properties and Uses

AMS 4132 Aluminum Alloy – Composition, Properties and Uses

AMS 4132

Engineering materials have evolved to meet the increasing demands of modern industries. One such material is the AMS 4132, a unique alloy steel grade with numerous applications across different fields. AMS 4132 is known for its excellent physical and mechanical properties, which make it a valuable material in various industrial operations. In this blog post, we’ll delve into the composition, physical, and mechanical properties of AMS4132, its uses, hardness, and heat treatment techniques.

What is AMS 4132?

AMS 4132 (also known as 2618 Aluminum Alloy) is a specification for a high-strength, low-alloy steel specifically designed for aircraft and other high-stress applications. This particular alloy has a unique combination of properties that make it ideal for these applications, including high strength, excellent fatigue resistance, and good weldability. In addition, it is also resistant to corrosion and can maintain its properties at high temperatures. Overall, AMS4132 is a top-choice material for those seeking a high-performance alloy that can withstand extreme conditions.

AMS 4132 Composition

AMS4132 is an alloy steel of several metals, including chromium, molybdenum, nickel, and carbon. The composition of the alloy plays a key role in determining its properties, including its flexibility, strength, and corrosion resistance. The carbon content of AMS 4132 ranges between 0.28% and 0.33%, while chromium and molybdenum contents are held between 0.80% and 1.10% and 0.15% and 0.25%, respectively. Nickel is added to enhance resistance to corrosion.




1.9 – 2.7




0.9 – 1.3


1.3 -1.8


0.04 – 0.1


0.9 – 1.2




92 – 94

AMS 4132 Physical Properties

AMS4132 is dense and heavy steel with a specific gravity of 7.8. It has a melting point of 1420℃, which makes it useful in high-temperature applications. The alloy has a thermal conductivity of 41.9 W/m.K and an electrical conductivity of 22.7% IACS. Its coefficient of thermal expansion is 12.6 x 10-6/°C, meaning that the alloy expands when heated.





2.76 g/cc

0.0997 lb/in^3

Melting Point

549 – 638 °C

1020 – 1180 °F

AMS 4132 Mechanical Properties

AMS 4132 has exceptional mechanical properties, including high tensile and yield strength and good elongation, toughness, and impact resistance. The tensile strength of AMS 4132 ranges between 860 and 1000 MPa, while the yield strength is between 570 and 700 MPa. The alloy has a high elongation of up to 17%, which helps to prevent cracking and deformation under stress.




Tensile Strength

372 MPa

54000 psi

Tensile Strength, Ultimate

441 Mpa

64000 psi

Shear Strength

262 Mpa

38000 psi

Fatigue Strength (completely reversed stress; RR Moore machine/specimen)

124 Mpa

18000 psi

Elastic Modulus (AA; Typical; Average of tension and compression)

74.5 Gpa

10800 ksi

Poisson’s ratio



Elongation at Break

10% at -28.0 °C

10% -18.4 °F

14% at 149 °C

14% at 300 °F

50% at 260 °C

50% at 500 °F

AMS 4132 Uses

Because of its excellent physical and mechanical properties, AMS 4132 is used in various applications across numerous industries. The alloy is commonly used in aerospace, automotive, and oil and gas manufacturing components and in producing machine parts, tools, and bearings. It is also used in the construction of pipelines and pressure vessels.

AMS 4132 Hardness

Hardness is a measure of the resistance of a material to permanent deformation under load. The hardness of AMS 4132 can be measured using the Rockwell C scale, which ranges from 20 to 70. The alloy typically has a Rockwell C hardness of between 50 and 55. This hardness value makes it ideal for use in applications where abrasion and wear are concerns.

AMS 4132 Heat Treatment

AMS 4132 can be heat-treated using various techniques, such as annealing, normalizing, quenching and tempering. Annealing involves heating the alloy to a specific temperature and cooling it slowly to improve its flexibility. Normalizing involves heating the alloy to a specific temperature and cooling it in the air to enhance its strength. On the other hand, quenching and tempering involve heating the alloy to a high temperature and then rapidly cooling it to increase its hardness and strength.


AMS 4132 material is a unique grade of alloy steel widely used in various industrial applications. Its excellent physical and mechanical properties and corrosion resistance make it valuable in high-temperature and high-stress environments. Understanding the composition, physical, and mechanical properties of AMS 4132 and its applications, hardness, and heat treatment techniques is essential for anyone working with this material. With its exceptional properties, AMS 4132 remains a popular and highly sought-after material in engineering.

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