IN939 Powder: Comprehensive Insights into This High-Performance Alloy

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Welcome to the comprehensive guide on IN939 powder, one of the most robust et high-performance superalloys you’ll encounter in the world of advanced manufacturing et turbine technology. Whether you are dealing with extreme temperatures, high stress, or corrosive environments, IN939 powder is a material you need to know inside and out.

This article will take you on a journey through the composition, properties, applicationset much more about IN939 powder, ensuring you have all the information you need to make des décisions éclairées about whether this nickel-based alloy is right for your project.

Let’s get started!


Overview: What is IN939 Powder?

IN939 powder est un superalliage à base de nickel designed specifically for applications that demand high-temperature strength, oxidation resistanceet excellent creep resistance. Developed primarily for gas turbine components, IN939 has found its way into a wide range of industries where parts must maintain their integrity under extreme operating conditions.

This material is popular in fabrication additive et métallurgie des poudres, where it’s used to create components that must perform in high-pressure et high-temperature environments—such as turbine blades, combustorset seals.

Key Features of IN939 Powder:

  • High strength retention at temperatures up to 850°C (1562°F).
  • Supérieure resistance to oxidation et corrosion in severe environments.
  • Excellent creep resistance for long-term applications in extreme conditions.
  • Suitable for fabrication additive techniques like powder-bed fusion et direct energy deposition.
  • Largement utilisé dans gas turbines, aérospatialeet power generation industries.

Now, let’s dive into the most important aspect of any material: its composition chimique et key properties.


Composition and Key Properties of IN939 Powder

Le performance de IN939 powder is directly linked to its composition chimique, which is engineered to deliver exceptional performance en high-temperature et oxidative environments. Each element in the alloy contributes to its la force, résistance à la corrosion, and overall durability.

Chemical Composition of IN939 Powder

ÉlémentPourcentage (%)Rôle dans l'alliage
Nickel (Ni)50-55Forms the primary base of the alloy, providing high-temperature strength and resistance to oxidation.
Chrome (Cr)22-23Enhances oxidation resistance, particularly in high-temperature settings.
Cobalt (Co)17-20Improves la force et hardness at elevated temperatures.
Titane (Ti)3.0-4.0Contributes to durcissement par précipitation, improving the overall strength and creep resistance.
Aluminium (Al)1.5-2.0Enhances oxidation resistance and supports strength retention at high temperatures.
Tungstène (W)1.0-2.0Adds to the alloy’s creep resistance by reinforcing the crystal structure.
Molybdène (Mo)1.0-2.0Provides additional high-temperature strength and resistance to corrosion.
Niobium (Nb)1,0 maxContributes to durcissement par précipitation, increasing the alloy’s strength.
Carbone (C)0,15 maxIncreases hardness, but must be limited to maintain ductility.
Bore (B)0,006 maxImproves grain boundary strength and aids in creep resistance.
Zirconium (Zr)0,04 maxEnhances creep resistance by stabilizing the grain boundaries.

Key Properties of IN939 Powder

IN939 powder owes its high-performance characteristics to its carefully balanced composition. Below are some of the key mechanical et propriétés thermiques that make it stand out.

PropriétéValeur/Description
Densité8,19 g/cm³
Plage de fusion1310°C – 1370°C
Résistance à la traction950 MPa
Limite d'élasticité650 MPa
Allongement à la rupture15-20%
Résistance au fluageExcellent, particularly up to 850°C
DuretéTypically 200-230 HB (Brinell Hardness)
Conductivité thermiqueLow, which enhances its high-temperature performance.
Résistance à l'oxydationOutstanding in environments up to 850°C
Résistance à la corrosionExceptional, particularly against oxidative et acidic environments.
SoudabilitéGood, though requires preheat et post-weld heat treatments to avoid cracking.

Advantages of IN939 Powder: Why Choose It?

So why should you seriously consider IN939 powder for your next project? Let’s break down the key advantages that make it a top choice for engineers and manufacturers alike.

1. High-Temperature Performance

If your project involves extreme heat, IN939 powder will keep its cool. This material is designed to retain its propriétés mécaniques at temperatures up to 850°C, making it ideal for gas turbines, exhaust systemset heat shields. Unlike many other alloys, IN939 doesn’t lose its strength or become brittle in such conditions.

2. Excellent Oxidation and Corrosion Resistance

In industries like aérospatiale ou power generation, components are often exposed to oxidative et corrosive environments. Thanks to its high chromium et aluminum content, IN939 powder provides superior oxidation resistance, even at elevated temperatures. This makes it perfect for use in turbine blades et combustors, where failure is not an option.

3. Creep Resistance

When a material is subjected to constant stress at high temperatures, it tends to slowly deform over time—a phenomenon known as creep. IN939 powder is designed with this in mind, offering excellent creep resistance, which is essential for long-term reliability in critical components like turbine discs et seals.

4. Versatile Manufacturing Capabilities

Whether you’re working with fabrication additive, métallurgie des poudres, or investment casting, IN939 powder is versatile enough to meet your needs. It’s commonly used in Impression 3D to create complex, high-performance parts with fine detailing et intricate geometries.


Applications of IN939 Powder: Where It Shines

Given its outstanding properties, IN939 powder is used in some of the most demanding industries around the world. Its ability to maintain strength, resist oxidationet withstand high temperatures makes it a staple in gas turbines, aérospatialeet power generation.

Common Applications of IN939 Powder

L'industrieApplication
AérospatialeAubes de turbine, afterburners, combustor componentset rotors exposed to high temperatures and oxidative environments.
Production d'électricitéTurbine discs, sealset blades en gas turbines et steam turbines.
AutomobileComposants du turbocompresseur that require both high strength and resistance to extreme heat.
Pétrole et gazOutils de fond de puits, valveset seals exposed to high-pressure, high-temperature environments.
Fabrication additivePièces imprimées en 3D pour aérospatiale, énergieet automotive components where high temperature and strength are essential.

From jet engines à turbine blades, IN939 powder is trusted by engineers around the globe for applications de haute performance that demand superior materials.


Specifications, Sizes, Grades, and Standards for IN939 Powder

En choisissant IN939 powder for your project, it’s crucial to understand the available specifications, sizeset standards. This ensures you get the right material for the right application, without sacrificing performance.

Specifications for IN939 Powder

SpécificationsDétails
Taille des particulesRanges from 15 to 53 microns, depending on the application (e.g., fabrication additive ou thermal spray).
Morphologie des poudresTypically spherical particles for improved flowability and even deposition.
Normes ASTMASTM B637 for nickel-based alloys used in aérospatiale et industrial applications.
Normes ISOISO 15156 for materials used in sour gas environments.
AMS StandardsAMS 5397 covers nickel-chromium-cobalt alloys like IN939 for precision components.
UNS NumberUNS N07090

Choisir le bon specification ensures that IN939 powder will meet the exacting requirements of your specific industry ou application.


Suppliers and Pricing of IN939 Powder

Le prix des IN939 powder can vary considerably based on supplier, particle sizeet volume. While it is generally more expensive than standard materials, its long-term performance often justifies the investment, especially in high-stress et high-temperature applications.

Suppliers and Pricing of IN939 Powder

FournisseurFourchette de prix (par kg)Notes
Höganäs AB$500 – $700A global leader in metal powders, including IN939 for additive manufacturing and powder metallurgy.
Technologie des charpentiers$520 – $730Specializes in high-performance alloys, offering custom particle sizes for specific applications.
Oerlikon Metco$510 – $720Provides IN939 powder for thermal spray coatings and 3D printing applications.
Sandvik$550 – $750Offers advanced materials for aerospace and energy sectors, including IN939 powder.
Kennametal$530 – $720Supplier of premium nickel-based alloys, including IN939, for industrial and energy applications.

On average, you can expect prices to range between $500 and $750 per kilogram, depending on the supplier et exigences spécifiques.


Comparing the Pros and Cons of IN939 Powder

Before you settle on IN939 powder for your project, it’s essential to consider the avantages et limitations to ensure it’s the right choice for your needs.

Avantages

AvantageDescription
Résistance à haute température: Retains mechanical properties up to 850°C.Ideal for jet engines, gas turbineset combustors.
Résistance à l'oxydation: Excels in oxidative environments.Perfect for components exposed to hot gases et air at high temperatures.
Résistance au fluage: Long-term stability under stress.Ensures reliability in critical applications like turbine discs et seals.
Versatile Manufacturing: Compatible with Impression 3D, thermal sprayet métallurgie des poudres.Allows for géométries complexes en fabrication additive.
Résistance à la corrosion: Excels in corrosive environments.Adds longevity to components exposed to acidic ou oxidative environments.

Limites

LimitationDescription
Coût élevé: More expensive than many other materials.May not be suitable for budget-sensitive des applications.
Difficulté d'usinage: Requires specialized tools for precision machining.Increases machining time and cost, especially for intricate parts.
Disponibilité limitée: Not always readily available in large quantities.Can lead to longer lead times, especially for custom formulations or large orders.
Oxidation at Very High Temperatures: Oxidation can become an issue above 850°C without coatings.May require protective coatings for applications at extreme temperatures.

FAQ

Still have questions? Below are some answers to common inquiries about IN939 powder.

QuestionRépondre
What is IN939 powder used for?It is commonly used in aérospatiale, power generationet oil and gas industries for high-temperature and high-stress parts like turbine blades et seals.
How much does IN939 powder cost?The price typically ranges from $500 to $750 per kilogram, depending on the supplier and specific requirements.
Can IN939 powder be used in 3D printing?Yes, it is widely used in fabrication additive processes like powder-bed fusion to create high-performance components.
What industries use IN939 powder?It’s used extensively in aérospatiale, power generation, automobileet oil and gas industries.
Is IN939 powder corrosion-resistant?Yes, IN939 offers excellent résistance à la corrosion, particularly in oxidative et acidic environments.
What are the main advantages of IN939 powder?IN939 provides high-temperature strength, oxidation resistanceet creep resistance, making it ideal for environnements extrêmes.
What are the machining challenges of IN939 powder?IN939’s high strength makes it more difficult to machine, often requiring specialized tools et techniques for precision fabrication.
Can IN939 powder handle extreme heat?Yes, IN939 maintains its mechanical properties at temperatures up to 850°C, making it ideal for turbines et combustor components.
What are the limitations of IN939 powder?The main limitations are its high cost et machining difficulty, which may increase production time et coûts.

Conclusion: Is IN939 Powder Right for Your Project?

If you’re working in an industry that demands high-temperature strength, oxidation resistanceet long-term stability, it should absolutely be on your radar. Its high-performance characteristics make it a top choice in aérospatiale, power generationet energy sectors, where reliability is paramount.

While it may come with a higher price tag and some machining challenges, the long-term benefits of using it—including durability, resistance to extreme environments, and high creep resistance—often make it a cost-effective solution in the long run.

In the end, if your project demands a material that can truly go the extra mile, it is a rock-solid investment that delivers exceptional performance where it matters most.

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