ThePipingMart Blog Grades AMS 5632 Stainless Steel – Composition, Properties, and Uses

AMS 5632 Stainless Steel – Composition, Properties, and Uses

AMS 5632

Stainless steel alloys are widely used in various industries due to their excellent corrosion resistance, high tensile strength, and durability. AMS5632 is a high-quality stainless steel alloy in high demand. It belongs to the austenitic category of stainless steel and is widely used in various applications requiring toughness and fatigue resistance. This blog post will examine AMS 5632 and explore its composition, physical and mechanical properties, uses, hardness, and heat treatment.

What is AMS 5632?

AMS 5632 (also known as 440 Stainless Steel) might not be a familiar term, but it holds considerable significance for those in the know. It is a stainless steel bar, forgings, and ring specification. This specification outlines the requirements for material composition, mechanical properties, and dimensional tolerances, among other things. So, why is it so important? Well, stainless steel is used in various industries, from automotive to aerospace. A reliable and consistent specification like AMS5632 ensures that the material used in these applications meets certain quality standards, ultimately leading to better performance and safety. It may just be a string of numbers and letters, but for the industries that rely on it, AMS5632 is much more than that.

AMS 5632 Composition

AMS 5632 is a high-grade stainless steel alloy that contains chromium, nickel, and molybdenum as major alloying elements. It also contains small amounts of carbon, manganese, phosphorus, sulfur, and silicon. Combining these elements makes AMS 5632 an excellent material with superior corrosion resistance, high flexibility, and toughness.

Grade C Mn Si P S Cr Mo Ni N
AMS 5632 min.











AMS 5632 Physical Properties

AMS 5632 has a density of 7.96 g/cm3 and a melting point of 1400-1450°C. It also has a thermal conductivity of 16.2 W/m-K at 100°C and an electrical resistivity of 72.1 nΩ-m at 20°C. These properties make it an excellent choice for high-temperature applications.

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (μm/m/°C) Thermal Conductivity (W/m.K) Specific Heat
0-100°C (J/kg.K)
Electrical Resistivity (nΩ.m)
0-100°C 0-200°C 0-600°C at 100°C at 500°C
AMS 5632 7650 200 10.1 10.3 11.7 24.2 460 600

AMS 5632 Mechanical Properties

AMS 5632 is known for its excellent mechanical properties, including high tensile and yield strength, good elasticity, and fatigue resistance. Its tensile strength ranges from 715 to 930 MPa, and its yield strength ranges from 310 to 690 MPa, depending on the heat treatment. It also has a good impact strength, making it an ideal choice for demanding applications.

Tempering Temperature (°C) Tensile Strength (MPa) Yield Strength 0.2% Proof (MPa) Elongation (% in 50mm) Hardness Rockwell (HR C) Impact Charpy V (J)
Annealed* 758 448 14 269HB max#
204 2030 1900 4 59 9
260 1960 1830 4 57 9
316 1860 1740 4 56 9
371 1790 1660 4 56 9

AMS 5632 Uses

AMS 5632 is widely used in various applications, including aerospace, chemical processing, food processing, medical, and marine industries. It is well-suited for use in corrosive environments, where its excellent resistance to pitting and crevice corrosion is an asset. It can also be used in high-temperature applications due to its good thermal stability.

AMS 5632 Hardness

The hardness of AMS5632 stainless steel can be varied by changing the heat treatment process. The typical hardness range after annealing is 167-270 HBW, while the hardness range after cold working and heat treatment can reach 600 HV.

AMS 5632 Heat Treatment:

AMS 5632 stainless steel can be heat-treated in different ways to achieve the desired mechanical properties. Annealing at 1010°C followed by rapid cooling results in the softest material, while cold working followed by ageing at 550°C results in the hardest material.


AMS 5632 stainless steel is a high-quality material with excellent mechanical properties, corrosion resistance, and thermal stability. It is widely used in various industries due to its toughness, fatigue resistance, and flexibility. By understanding its composition, physical and mechanical properties, uses, hardness, and heat treatment, you can decide whether to use it for your next project. Choose AMS 5632 stainless steel and enjoy the benefits of a durable and reliable material.

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