ThePipingMart Blog Grades AMS 5529 Stainless Steel – Composition, Properties, and Uses

AMS 5529 Stainless Steel – Composition, Properties, and Uses

AMS 5529

AMS 5529 is a type of austenitic stainless steel known for its high corrosion resistance and excellent mechanical properties. It is a popular material in the aerospace, medical, and oil and gas industries due to its durability and strength. This blog post will explore AMS5529’s composition, physical and mechanical properties, hardness, and heat treatment.

What is AMS 5529?

AMS 5529 (also known as 17-7 PH Stainless Steel) is a specific type of steel widely used in the Aerospace industry. Being one of the most sturdy and durable materials, steel has been the foundation for many high-quality construction products. AMS5529 features unique properties, such as exceptional resistance to corrosion, fatigue, and wear, making it an ideal material for aircraft components. Moreover, this type of steel is known for its ability to withstand extreme temperatures, allowing it to perform well in harsh environmental conditions. Its properties make it an important material in the aviation industry, ensuring the quality and safety of aircraft for many years to come.

AMS 5529 Composition

AMS 5529 comprises varying amounts of iron, carbon, nickel, and chromium. Its chemical composition is as follows: carbon (max 0.08%), manganese (max 2.00%), phosphorus (max 0.045%), sulfur (max 0.030%), silicon (max 1.00%), chromium (17.0%-19.0%), nickel (9.0%-11.0%), and iron (balance). Adding nickel and chromium to the alloy gives it excellent resistance to corrosion and oxidation.

Element Content (%)
Chromium, Cr 16-18
Nickel, Ni 6.50 – 7.75
Manganese, Mn 1 max
Silicon, Si 1 max
Aluminum, Al 0.75 – 1.50
Carbon, C 0.09 max
Phosphorous, P 0.040 max
Sulfur, S 0.030 max
Iron, Fe Balance

AMS 5529 Physical Properties

AMS 5529 has a density of 0.289 lbs/in^3 and a melting point of 2500°F. It has a specific heat capacity of 0.11 BTU/lb-°F and a thermal conductivity of 9.4 BTU/hr-ft-°F. Its electrical resistivity is 28.3 ohms-coil/ft.

Properties Metric Imperial
Density 7.80 g/cm3 0.282 lb/in3

AMS 5529 Mechanical Properties

AMS 5529 is a high-strength material with excellent mechanical properties. It has a tensile strength of 155 ksi and a yield strength of 75 ksi. Its elongation is 35%, and its hardness is 33 HRC. It also has good impact resistance at low temperatures.

Properties Metric Imperial
Tensile strength 1170 MPa 170000 psi
Yield strength 965 MPa 140000 psi
Modulus of elasticity 204 GPa 29600 ksi
Poisson’s ratio 0.27-0.30 0.27-0.30
Elongation at break 6% 6%
Hardness, Rockwell C 38 38

AMS 5529 Equivalents

AISI 631 AMS 5528 AMS 5529 AMS 5568 AMS 5644
AMS 5678 ASTM A313 (631) ASTM A564 (631) ASTM A579 (631) ASTM A693 (631)
ASTM A705 (631) DIN 1.4568 MIL S-25043 DIN 1.4568 AMS 5673
AMS 5824 ASME SA705 ASTM A579 (grade 62) MIL SPEC MIL-W-46078 SAE J217
SAE J467

AMS 5529 Uses

AMS 5529 is commonly used in the aerospace industry for applications such as aircraft engine components, turbine blades, and structural support components. It is also used in the medical industry for surgical implants and instruments due to its biocompatibility and corrosion resistance. In the oil and gas industry, it is used in downhole tools, valves, and pumps due to its resistance to corrosion and erosion.

AMS 5529 Hardness

AMS 5529 is a relatively hard material with a hardness of 33 HRC. Due to its hardness, it can resist wear and abrasion, making it suitable for applications that require high wear resistance.

AMS 5529 Heat treatment

AMS 5529 is typically heat treated at a temperature range of 1850-2050°F, followed by rapid cooling in water or air. This process is called annealing and helps to improve the material’s ductility and toughness. Alternatively, it can be heat treated at elevated temperatures ranging from 1000-1200°F for stress relief.


AMS 5529 material is a high-performance material with excellent mechanical and physical properties, making it suitable for various industrial applications. Its resistance to corrosion, oxidation, and wear makes it popular in the aerospace, medical, and oil and gas industries. Knowing the composition, physical and mechanical properties, uses, hardness and heat treatment of AMS 5529 is essential in selecting the appropriate material for specific applications.

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