AMS 5662
High-Performance Nickel-Based Superalloy from Premium Alloys
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The AMS 5662 specification defines a particular condition of Inconel 718, a nickel-based superalloy perfect for manufacturers seeking exceptional strength, corrosion and heat resistant properties. Whether you’re designing cutting-edge aerospace components, engineering critical oil and gas equipment, or pushing the boundaries in power generation, understanding AMS 5662 is crucial to your success.
At Premium Alloys, we’re proud to be a growing distributor of this time-tested material, serving diverse industries across the United States. From our base in Houston, Texas, we’re committed to providing responsive service and quality products to support your projects involving this crucial material.
A Trusted Supplier of AMS 5662 Heat Resistant Nickel Alloy
At Premium Alloys, we supply AMS 5662 to aerospace, oil & gas, and power generation industries, prioritizing quality and efficient service. This guide offers an informative overview of AMS 5662 and its applications. While we aim to provide valuable insights, we always recommend consulting with qualified professionals for specific material decisions. Our team is ready to discuss your unique requirements and offer additional information to support your considerations.
Understanding AMS 5662
AMS 5662 (also known by its trade name Inconel 718), is a corrosion and heat resistant nickel alloy. The material can be precipitation hardened to maximize properties. It falls under the category of superalloys, materials engineered to maintain their strength and resist corrosion at extreme temperatures. This classification is crucial for applications where standard alloys would fail under severe conditions.
Chemical Composition
The exceptional properties of AMS 5662 stem from its carefully balanced chemical composition:
Nickel
50-55%
Iron
Balance
Molybdenum
2.8-3.3%
Aluminum
0.2-0.8%
Chromium
17-21%
Niobium (+ Tantalum)
4.75-5.5%
Titanium
0.65-1.15%
This precise blend of elements contributes to the alloy’s remarkable characteristics, which we’ll explore further.
Key Capabilities of AMS 5662
AMS 5662 boasts an impressive array of capabilities that make it ideal for demanding applications:
Tensile Strength
Minimum of 180 ksi (1241 MPa) at room temperature
Elongation
Minimum 12% in 2 inches
Melting Range
2300-2437°F (1260-1336°C)
Electrical Resistivity
775 ohm-cir mil/ft at 70°F (129 μΩ·cm at 21°C)
Yield Strength
Minimum of 150 ksi (1034 MPa) at room temperature
Density
0.297 lb/in³ (8.22 g/cm³)
Specific Heat
0.11 Btu/lb·°F (460 J/kg·K) at room temperature
Additionally, AMS 5662 exhibits excellent creep rupture properties and maintains its high strength from cryogenic temperatures up to 1300°F.
These properties translate to excellent strength-to-weight ratio, high-temperature performance, and corrosion resistance – critical factors in aerospace, oil & gas, and power generation applications.
Solution Heat Treated and Processing
The performance of AMS 5662 is significantly influenced by its heat treatment process, which includes both solution heat and precipitation heat treatments:
- Solution Treatment: 1725-1850°F (940-1010°C), followed by rapid cooling
- Precipitation (Age) Hardening:
- Step 1: 1325-1400°F (718-760°C) for 8 hours, furnace cool to 1150-1200°F (621-649°C)
- Step 2: Hold at 1150-1200°F (621-649°C) for total aging time of 18 hours
This two-step aging process, known as “double aging,” optimizes the alloy’s strength and durability.
Primary Applications of AMS 5662
The exceptional properties of AMS 5662 make it a versatile and heat-resistant alloy with critical applications across several high-demand industries. Let’s explore how this superalloy is utilized in key sectors and how Premium Alloys supports these applications.
Aerospace and Defense Industry
In the aerospace sector, AMS 5662, a heat resistant nickel alloy, has become indispensable.
Key Applications:
- Jet engine components (turbine disks, shafts, cases)
- Fasteners and bolts for high-temperature assemblies
- Rocket motor casings
- Landing gear components
How Premium Alloys Serves This Sector
Our ability to provide quick turnaround times and custom cutting services ensures that aerospace manufacturers can meet tight production schedules without compromising on quality.
Oil and Gas Sector
The oil and gas industry relies on AMS 5662 for its excellent corrosion resistance and high-temperature strength.
Key Applications:
- Downhole tools and equipment
- Wellhead components
- Subsea valves and fittings
- Heat exchanger tubing
- Mechanical tubing
How Premium Alloys Supports Oil & Gas Clients:
We offer just-in-time delivery options and maintain stock levels that align with the cyclical demands of the sector. Our in-house cutting capabilities allow us to provide custom lengths that meet the exact specifications required for challenging downhole environments.
Power Generation Applications
In power plants, where efficiency and longevity are crucial, AMS 5662 plays a vital role.
Key Applications:
- Gas turbine components
- Steam turbine bolting
- Nuclear reactor internals
- Exhaust system components
How Premium Alloys Serves Power Gen Customers:
We understand the critical nature of power generation equipment and the cost of downtime. We also provide material certifications and traceability documentation crucial for regulatory compliance in this sector.
Pumps and Valves
The chemical processing and general industrial sectors rely on AMS 5662 for critical pump and valve components.
Key Applications:
- Impellers and shafts for high-performance pumps
- Valve stems and seats for severe service conditions
- Sealing components in corrosive environments
- Bolting for high-pressure systems
How Premium Alloys Supports This Market:
Our diverse inventory of AMS 5662 bar stock allows us to cater to the varied needs of pump and valve manufacturers. We offer custom cutting services to provide near-net-shape pieces, reducing waste and machining time for our customers. Our technical team can assist in material selection and provide guidance on optimal machining parameters for AMS 5662.
Advantages of AMS 5662
Understanding the unique advantages of AMS 5662 is crucial for engineers and procurement specialists seeking the optimal materials for their applications. Let’s explore the key benefits that make this superalloy stand out in high-performance applications.
High-Temperature Strength and Stability
One of the most significant advantages of AMS 5662 is its ability to maintain exceptional mechanical properties at elevated temperatures.
Key Points:
- Retains strength up to 1300°F (704°C)
- Excellent creep resistance at high temperatures
- Maintains dimensional stability in thermal cycling environments
- Bolting for high-pressure systems
Additionally, AMS 5662 exhibits strong resistance to stress rupture, making it ideal for applications subjected to significant mechanical stress and elevated thermal conditions.
Industry Impact: This heat-resistant property is particularly crucial in jet engine components and gas turbines, where materials must withstand extreme temperatures without losing structural integrity.
We source our AMS 5662 from mills with proven track records in producing high-quality, consistent material. Our rigorous quality control processes ensure that every batch meets the specified high-temperature performance criteria.
Excellent Corrosion Resistance
AMS 5662 exhibits superior resistance to a wide range of corrosive environments.
Key Points:
- Resistant to pitting and crevice corrosion
- Performs well in both oxidizing and reducing atmospheres
- Withstands stress-corrosion cracking in chloride environments
Industry Impact: This property is invaluable in oil and gas applications, where exposure to corrosive fluids and gases is common, and in chemical processing equipment handling aggressive media.
Our team can provide guidance on selecting the appropriate surface finish and post-processing treatments to further enhance the corrosion resistance of AMS 5662 for your specific application.
Superior Fatigue and Creep Resistance
The unique microstructure of AMS 5662 contributes to its exceptional resistance to both fatigue and creep.
Key Points:
- High cycle fatigue strength
- Excellent low cycle fatigue properties
- Superior creep rupture strength compared to many other superalloys
Industry Impact: These properties are critical in aerospace and power generation applications where components undergo cyclic loading and prolonged exposure to high stresses at elevated temperatures.
We can provide material with specific grain structures optimized for either fatigue or creep resistance, depending on your application requirements.
Good Machinability and Formability
Despite its high strength, AMS 5662 offers relatively good machinability and formability compared to other superalloys.
Key Points:
- Can be machined using conventional methods with proper tooling and parameters
- Suitable for both hot and cold forming processes
- Responds well to various joining methods, including welding and brazing
Industry Impact: This versatility in processing makes AMS 5662 attractive for complex part geometries in aerospace and industrial applications.
Our in-house machining capabilities allow us to provide near-net-shape pieces, reducing your machining time and material waste. We also offer technical support to optimize your machining processes for AMS 5662.
Excellent Weldability
AMS 5662 exhibits good weldability, a crucial factor in many fabrication processes.
Key Points:
- Can be welded using various methods, including TIG, MIG, and resistance welding
- Maintains high joint efficiency in welded structures
- Less susceptible to post-weld cracking compared to some other high-strength alloys
Industry Impact: This property is particularly valuable in the fabrication of large structures in aerospace and power generation sectors.
Manufacturing and Processing Considerations
Understanding the nuances of manufacturing and processing AMS 5662 is crucial for optimizing its performance in your applications. This section will guide you through key considerations and how Premium Alloys supports your manufacturing processes.
Melting and Refining Techniques
Vacuum Induction Melting (VIM):
- Primary melting method for AMS 5662
- Ensures high purity and precise composition control
- Reduces gas content and minimizes non-metallic inclusions
Vacuum Arc Remelting (VAR):
- Secondary refining process
- Improves chemical and structural homogeneity
- Enhances mechanical properties and cleanliness
Additionally, consumable electrode remelting is crucial in the melting practice used to produce corrosion and heat-resistant nickel alloys. This technique ensures the alloy is multiple melted to
Key Takeaways
Unparalleled Performance
AMS 5662’s unique and heat-resistant composition and microstructure provide superior strength and stability at elevated temperatures, making it indispensable in many high-performance applications.
Versatility
Whether in aerospace, oil and gas, power generation, or emerging technologies, AMS 5662 demonstrates remarkable adaptability to diverse and challenging environments.
Processing Expertise
Proper manufacturing and processing are crucial to fully leveraging the capabilities of AMS 5662, from precise melting and forging to specialized heat treatments.
Industry Trends
The demand for AMS 5662 continues to grow, driven by advancements in aerospace, energy, and other high-tech sectors.
Future Innovations
Ongoing research in areas such as additive manufacturing and microstructure optimization promises to further enhance the capabilities of AMS 5662.
Sustainability
As industries focus more on environmental impact, the recyclability and long service life of AMS 5662 become increasingly valuable.
Take the Next Step with Premium Alloys
Whether you’re designing cutting-edge aerospace components, developing corrosion-resistant oil and gas equipment, or pushing the boundaries in any high-performance application, Premium Alloys is here to support your success with AMS 5662.
