ThePipingMart Blog Grades AMS 5622 Stainless Steel – Composition, Properties, and Uses

AMS 5622 Stainless Steel – Composition, Properties, and Uses

AMS 5622

AMS 5622 is a common stainless steel alloy known for its superior strength, corrosion resistance, and durability. This alloy is widely used in various industries, including aerospace, automotive, and medical. This blog post will closely examine the composition, physical and mechanical properties, hardness, heat treatment, and uses of AMS 5622 material.

What is AMS 5622?

AMS 5622 (also known as 17-4 PH Stainless Steel) is a specification created by the Aerospace Material Specification Committee for manufacturing stainless steel bars, wire, and forgings. The material must meet certain requirements for chemical composition, mechanical properties, and surface quality to ensure high strength and corrosion resistance. It is commonly used in the aerospace, defence, and medical industries, where precision and reliability are crucial. Understanding the specifications of AMS5622 is essential for manufacturers and engineers who use stainless steel in their products. This specification has been carefully crafted to guarantee that the stainless steel products meet the highest quality standards, making them a dependable and crucial component in many applications.

What Form is AMS 5622 Available at Piping Mart?

  • Screws

AMS 5622 Composition

The AMS 5622 alloy is considered a low-carbon martensitic stainless steel with a high level of chromium and molybdenum content. The alloy also contains small amounts of manganese, nickel, and silicon. The carbon content is kept low to avoid any possible corrosion issues associated with carbon.

Chemical Element % Present
Carbon (C) 0.0 – 0.07
Chromium (Cr) 15.00 – 17.00
Manganese (Mn) 0.0 – 1.50
Silicon (Si) 0.0 – 0.70
Phosphorous (P) 0.0 – 0.04
Sulphur (S) 0.0 – 0.03
Nickel (Ni) 3.00 – 5.00
Copper (Cu) 3.00 – 5.00
Molybdenum (Mo) 0.0 – 0.60
Niobium (Columbium) (Nb) 0.0 – 0.45
Iron (Fe) Balance

AMS 5622 Physical Properties

AMS 5622 welding wire boasts excellent physical properties, including a high melting point of 1399–1454°C, a density of 7.73g/cm³, and a thermal conductivity of 24 W/mK. The alloy has an austenite/ferrite dual-phase structure, enhancing strength and toughness. AMS 5622 can withstand high temperatures and resist wear, erosion, and fatigue.

Physical Property Value
Density 7.75 g/cm³
Thermal Expansion 10.8 x10^-6 /K
Modulus of Elasticity 196 GPa
Thermal Conductivity 18.4 W/m.K
Electrical Resistivity 0.8 x10^-6 Ω .m

AMS 5622 Mechanical Properties

The mechanical properties of AMS 5622 material are impressive, making it an ideal material for demanding applications. The alloy has a tensile strength of 2077 MPa, yield strength of 1569 MPa, and elongation of 9%. AMS 5622 is also highly resistant to hydrogen embrittlement, making it suitable for harsh environments.

Properties Metric Imperial
Shear modulus 77.4 GPa 11200 ksi
Elastic modulus 190-210 GPa 27557-30458 ksi
Poisson’s ratio 0.27-0.30 0.27-0.30
Hardness, Brinell 352 352
Hardness, Knoop (estimated from Rockwell C) 363 363
Hardness, Rockwell C 36 36
Hardness, Vickers (estimated from Rockwell C) 349 349

AMS 5622 Equivalents

AISI 630 ASTM A693 (630) AMS 5342 MIL-S-81506
AMS 5604 ASTM A705 (630) AMS 5343 SAE J467 (17-4PH)
AMS 5622 MIL C-24111 AMS 5344 ASME SA705
AMS 5643 MIL P-47183 AMS 5355 ASME SA564
ASTM A564 (630) MIL S-81591 AMS 5825

AMS 5622 Uses

AMS 5622 sheet plates is a versatile alloy used in various industries where strength, durability, and resistance to corrosion are critical. It is commonly used in the aerospace and defence industries, where it is used for the manufacturing of bearings, gears, and other components that require high strength and toughness. AMS 5622 is also used in the automotive industry for brake rotor hubs and other critical components. It is also utilized in the medical industry, where its anti-corrosion properties make it useful for surgical instruments.

AMS 5622 Hardness

AMS 5622 is impressive, with a Rockwell hardness of C43. This makes the alloy highly resistant to deformation, wear, and scratches. The hardness also ensures the alloy maintains its shape under high stresses and extreme conditions.

AMS 5622 Heat treatment

Heat treatment can be used to improve the mechanical properties of AMS 5622. Heat treatment can harden the alloy to increase its strength and durability. Heat treatment involves heating the alloy to 980°C and quenching it in oil or air. This process results in the formation of martensite, which gives the alloy its strength and toughness.


AMS5622 is a high-performance stainless steel alloy with excellent mechanical and physical properties. Its composition, hardness, and heat treatment make it an ideal material for various aerospace, automotive, and medical applications. Understanding the properties and potential of AMS 5622 material is key to its successful application in demanding environments. As technology advances, the continued use of AMS 5622 is expected, making it a critical material in modern industries.

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