ThePipingMart Blog Grades AMS 5605 Inconel Alloy – Composition, Properties, and Uses

AMS 5605 Inconel Alloy – Composition, Properties, and Uses

AMS 5605

Every industry that relies on advanced materials and components understands the importance of material selection. High-performance materials such as AMS5605 are critical in demanding applications where heat, corrosion, and mechanical stress are in play. This blog post will dive into AMS 5605, including its composition, physical and mechanical properties, applications, hardness, and heat treatment.

What is AMS 5605?

AMS 5605 (also known as Inconel 706 Alloy) is a martensitic steel used in applications that require high strength and corrosion resistance. This material is commonly used in the aerospace and defence industries and for medical devices. Its unique composition gives it excellent tensile strength and toughness, making it ideal for environments that require durability and reliability. So, the next time you come across AMS5605, remember that it’s a type of stainless steel with impressive properties.

AMS 5605 Composition

AMS 5605 is martensitic stainless steel with a composition that includes high levels of chromium, nickel, and molybdenum. It also contains small amounts of carbon, manganese, and silicon. This unique composition contributes to its excellent corrosion resistance, strength, and toughness under high temperatures and stress.

Elements Content (%)
Nickel, Ni 39-44
Iron, Fe 38
Chromium, Cr 14.5-17.5
Niobium, Nb 2.50-3.30
Cobalt, Co ≤ 1
Titanium, Ti ≤ 0.40
Copper, Cu ≤ 0.35
Manganese, Mn ≤ 0.35
Silicon, Si ≤ 0.35
Carbon, C ≤ 0.30
Aluminum, Al ≤ 0.060
Phosphorous, P ≤ 0.020
Sulfur, S ≤ 0.015
Boron, B ≤ 0.0060

AMS 5605 Physical Properties

The following are some physical properties of AMS 5605: Density – 0.28 lb/in³, Melting Point – 2540 °F, Specific Heat Capacity – 0.11 BTU/lb·°F, and Thermal Conductivity – 14.1 BTU·in./(hr·ft²·°F).

Properties Metric Imperial
Density 8.05 g/cm³ 0.291 lb/in³
Melting point 1360°C 2480°F

AMS 5605 Mechanical Properties

AMS 5605 possesses exceptional mechanical properties such as high tensile strength, impact strength, and fatigue resistance, making it ideal for use in harsh environments. The material exhibits a tensile strength of up to 200 ksi, yield strength of up to 170 ksi, and elongation of 10-15%.

Properties Metric Imperial
Tensile strength 757 MPa 109800 psi
Yield strength (at strain 0.200%) 383 MPa 55500 psi
Poisson’s ratio (precipitation hardened, calculated by mfr) 0.382 0.382
Modulus of elasticity (precipitation hardened, dynamic method) 210 GPa 30500 ksi
Elongation at break 47% 47%

AMS 5605 Equivalent

  • AMS 5605
  • AMS 5606
  • AMS 5701
  • AMS 5702
  • AMS 5703

AMS 5605 Thermal  Properties

Properties Metric Imperial
Thermal expansion co-efficient (at 24-100°C/75.2-212°F) 13.46 µm/m°C 7.478 µin/in°F
Thermal conductivity 12.5 W/mK 86.8 BTU in/hr.ft².°F

AMS 5605 Uses

AMS 5605 is widely used in the aerospace and defence industry, especially in components that require high strength, corrosion resistance, and durability. It is also utilized in the oil and gas industry, chemical processing, and marine applications.

AMS 5605 Hardness

AMS 5605 is typically measured using the Rockwell C scale, which ranges from 20HRC to 50HRC, depending on the heat treatment condition.

AMS 5605 Heat Treatment

AMS 5605 is heat-treated to improve its mechanical properties, such as hardness, strength, and toughness. The most common heat treatment processes for AMS 5605 include Quenching and Tempering, Aging, Annealing, and Stress Relieving.


In conclusion, AMS 5605 is an excellent material with exceptional properties that make it ideal for applications that demand high strength, toughness, and corrosion resistance. Its unique composition, physical and mechanical properties, and heat treatment capabilities make it a top pick in various industries. Understanding its composition, properties, and applications is critical to selecting the suitable material for your next project.

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