Nimonic 115

About Nimonic 115 Superalloy

Name and Equivalent Name

Nimonic 115, Nickel-Chromium-Cobalt Alloy 115, is identified by UNS N07015. It meets DIN/EN 2.4636 (NiCr22Co20MoTi) and AMS 5911 standards. The alloy is optimized for components that withstand extreme temperatures and mechanical stress.

Nimonic 115 Basic Introduction

Nimonic 115 is a high-performance superalloy designed for high-temperature environments, especially in the aerospace and energy sectors. With excellent creep resistance and fatigue strength, this alloy maintains its mechanical properties at temperatures up to 1050°C.

Its resistance to thermal stress and long service life make it suitable for critical components like turbine blades, exhaust valves, and heat exchangers. Nimonic 115 provides outstanding strength and stability, ensuring cyclic and continuous operations reliability.

Alternative Superalloys of Nimonic 115

Nimonic 90 offers comparable thermal stability but with different creep properties, making it useful in specific turbine applications. Inconel 718 and Rene 41 are alternatives for corrosion resistance and long-term fatigue strength.

Waspaloy performs well in high-temperature environments for oxidation resistance. Hastelloy X can also be used when thermal stability and corrosion resistance are critical for chemical processing applications. Selection depends on specific operating conditions and performance requirements.

Nimonic 115 Design Intention

Nimonic 115 is designed for high-temperature strength, creep resistance, and thermal stability in demanding applications. The alloy's unique composition allows it to resist deformation and fatigue, even under continuous thermal stress at 1050°C.

The high cobalt and chromium content provides excellent oxidation resistance, while aluminum promotes precipitation hardening to enhance mechanical strength. This alloy is ideal for components exposed to severe stress and cyclic loading in turbines, jet engines, and industrial applications.

Nimonic 115 Chemical Composition

Nimonic 115's composition ensures a balance of strength, creep resistance, and thermal stability.

Nimonic 115 Physical Properties

Nimonic 115 provides outstanding physical properties that ensure performance at elevated temperatures.

Metallographic Structure of Nimonic 115 Superalloy

Nimonic 115 exhibits a face-centered cubic (FCC) crystal structure typical of nickel-based alloys. The alloy’s aluminum and titanium promote precipitation hardening by forming gamma prime (γ') phases, enhancing strength and creep resistance.

Under extreme thermal conditions, the alloy maintains microstructural stability, preventing grain boundary sliding and phase transformation. This stability ensures the long-term performance of components, even after prolonged exposure to high temperatures.

Nimonic 115 Mechanical Properties

Nimonic 115’s mechanical properties make it suitable for high-stress applications, with excellent fatigue resistance and thermal stability.

Key Features of Nimonic 115 Superalloy

1. High-Temperature Strength Nimonic 115 provides exceptional mechanical strength at temperatures up to 1050°C, ensuring that components maintain integrity under extreme heat.

2. Creep Resistance The alloy offers excellent creep resistance, reducing deformation under continuous stress, making it ideal for turbine and exhaust components.

3. Oxidation Resistance With high chromium and cobalt content, Nimonic 115 provides superior resistance to oxidation, ensuring long-term durability in harsh environments.

4. Thermal Stability The alloy’s stable microstructure allows it to withstand repeated thermal cycling, ensuring reliability for applications exposed to continuous heating and cooling.

5. Precipitation Hardening The presence of aluminum and titanium facilitates precipitation hardening, enhancing the alloy's strength and making it suitable for high-stress applications in the aerospace and energy sectors.

Nimonic 115 Superalloy’s Machinability

Nimonic 115 can be used in Vacuum Investment Casting due to its excellent fluidity and thermal resistance, ensuring high-precision components for aerospace applications.

It is not suitable for Single Crystal Casting, as it is not designed to form single-crystal structures necessary for advanced jet engines.

This alloy performs well with Equiaxed Crystal Casting, providing uniform mechanical properties suitable for high-stress turbine components.

Nimonic 115 is compatible with Superalloy Directional Casting, which enhances creep resistance by aligning grain boundaries along stress directions.

It is not ideal for Powder Metallurgy Turbine Disc production, as its properties are optimized for casting and forging rather than powder consolidation.

This alloy is well-suited for Superalloy Precision Forging, delivering high mechanical strength and creep resistance for demanding aerospace applications.

Nimonic 115 is not recommended for Superalloy 3D Printing, as the high-temperature processing limits additive manufacturing capabilities.

The alloy works efficiently with CNC Machining, offering precision and dimensional stability in complex components.

Nimonic 115 supports Superalloy Welding, though advanced techniques are required to avoid cracking due to its high chromium and cobalt content.

It responds well to Hot Isostatic Pressing (HIP), improving fatigue strength and eliminating internal voids for enhanced performance.

Nimonic 115 Superalloy Applications

In Aerospace and Aviation, Nimonic 115 is used in turbine blades and jet engine components, where high-temperature strength and fatigue resistance are essential.

For Power Generation, it ensures reliability in gas turbines, industrial boilers, and heat exchangers subjected to continuous thermal stress.

In the Oil and Gas industry, the alloy is applied to high-temperature pipelines, valves, and drilling tools, delivering excellent mechanical and corrosion resistance.

Nimonic 115 enhances Energy systems, including turbines and furnaces, providing long-term performance under extreme thermal loads.

This alloy offers corrosion resistance for marine applications, such as exhaust systems, engine components, and propulsion units exposed to saltwater.

Mining uses it in pump housings, drill bits, and wear-resistant components exposed to harsh environments.

For Automotive applications, Nimonic 115 is utilized in turbochargers and exhaust systems, offering durability under high thermal loads.

The Chemical Processing industry relies on the alloy for reactors and heat exchangers, where corrosion resistance is critical under high-temperature conditions.

In Pharmaceutical and Food applications, Nimonic 115 ensures non-reactive, heat-resistant valves and pumps.

For Military and Defense, the alloy is used in jet engines and missile systems, providing thermal stability and fatigue resistance under extreme conditions.

In Nuclear industries, Nimonic 115 ensures reliable performance in reactors and heat exchangers exposed to high radiation and temperature.

When to Choose Nimonic 115 Superalloy

Nimonic 115 is the perfect material for custom superalloy parts requiring high thermal stability, creep resistance, and mechanical strength. It excels in applications that expose components to continuous thermal and mechanical stress, such as jet engines, turbines, and industrial furnaces.

This alloy is highly recommended for aerospace, power generation, and oil and gas industries, where operational reliability under extreme conditions is critical. Nimonic 115 ensures long-lasting performance with minimal maintenance, making it a cost-effective solution for high-temperature operations.

Explore our custom superalloy parts service to find the best solution tailored to your industry’s requirements.