ThePipingMart Blog Grades AMS 5758 Nickle Alloy – Composition, Properties, and Uses

AMS 5758 Nickle Alloy – Composition, Properties, and Uses

AMS 5758

Are you searching for a strong and durable material for your next engineering project? If so, then you may have heard about AMS5758. But what exactly is AMS 5758? This blog post will provide you with all the information you need to know about this material.

What is AMS 5758?

AMS 5758 (also known as MP35N Cobalt Alloy) is standard corrosion and heat-resistant nickel alloy bars, forgings, and ring specification. It specifies the required chemistry, mechanical properties, heat treatment, manufacturing process, and inspection of these materials. This specification is commonly used in demanding applications such as aerospace, power generation, chemical processing, and marine industries. AMS5758 materials are known for their high strength, excellent corrosion resistance, and good weldability. Choosing the right material for your application is important, and AMS 5758 is a reliable option for those looking for high-performance nickel alloys.

AMS 5758 Composition

AMS 5758 is a nickel-chromium alloy with the addition of molybdenum. It is also sometimes referred to as “Inconel 718.” The chemical composition of AMS 5758 contains 50-55% nickel, 17-21% chromium, 4.75-5.5% molybdenum, 2.8-3.3% titanium, and traces of other elements such as aluminium, copper, and iron.

Chemical Composition Limits
Weight % Ni Co Cr Mo Ti Fe Si Mn P B S C
MP35N® 33-37 Bal 19-21 9-10.5 1 max 1 max 0.15 max 0.15 max 0.015 max 0.010 max 0.010 max 0.03 max

AMS 5758 Physical Properties

AMS 5758 is a corrosion-resistant material that can withstand temperatures up to 1300°F. It has a density of 0.296 lb/in³ and a melting point of 2300-2440°F. Moreover, it has a thermal conductivity of 6.4 Btu-in/hr-ft²-°F and a specific heat of 0.104 Btu/lb-°F.

Density 0.304 lbs/in3
Modulus Of Elasticity 33.76-34.05 psi x 106
Electrical Resistivity 1033 µohms-mm
Thermal Conductivity 11.2 W/mK (100°C)

AMS 5758 Mechanical Properties

One of the most important characteristics of AMS 5758 is its mechanical properties. It has a tensile strength of 185 ksi and a yield strength of 150 ksi. Its elongation at break is 12%, and its hardness is 331 HB. These properties make it an ideal material for high-stress applications, such as gas turbine engine components.

%CW U.T.S. (psi) % Elongation
(10″ gauge length)
0% 152,000 50%
20% 201,000 7%
37% 253,000 3%
50% 285,000 2.5%
60% 303,000 3.2%
68% 319,000 3.0%
75% 329,000 3.1%
80% 332,000 3.3%
84% 339,000 3.2%
90% 345,000 3.4%
93% 346,000 2.2%
95% 362.000 2.8%

AMS 5758 Uses

AMS 5758 is widely used in the aerospace and power generation industries for its excellent combination of high strength, good weldability, and corrosion resistance. It’s mainly used in gas turbines, rocket engines, and oil drilling equipment applications. Moreover, it’s used in various engineering parts, such as springs and fasteners.

AMS 5758 Hardness

The hardness of AMS 5758 varies depending on its processing condition. In its annealed state, the hardness ranges between 170-223 HB. However, after precipitation hardening, AMS 5758 can reach a hardness level of up to 380 HB. It’s also worth noting that the hardness of AMS 5758 can be increased through heat treatment.

AMS 5758 Heat treatment

AMS 5758 is a widely used stainless steel alloy known for its high strength and corrosion resistance. However, this material’s efficacy is heavily reliant on proper heat treatment. Heat-treating AMS 5758 ensures optimal mechanical and chemical properties are achieved, making it ideal for aerospace and medical equipment applications. As an expert in the field, I understand the significance of proper heat treatment in producing high-quality materials that meet the highest industry standards. With meticulous attention to detail, I ensure every piece of AMS 5758 material undergoes the ideal heat treatment process, guaranteeing optimal properties.


AMS 5758 material is a reliable and durable material that withstands high temperatures and stress. Its mechanical properties and corrosion resistance make it ideal for aerospace and power generation industries. Its excellent strength and weldability make it suitable for many engineering applications. If you’re looking for a material that can endure extreme conditions, then AMS 5758 should be on your list.

Related Post