Ni25 Powder: Industry-Leading Alloy for Corrosion and Heat Resistance

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If you’re working in industries requiring high-performance materials, you’re probably familiar with nickel-based alloys. One such material that stands out for its strength, corrosion resistance, and thermal stability is Ni25 powder. This versatile alloy, often used in additive manufacturing, thermal spraying, and high-temperature applications, is optimized for extreme conditions requiring durability and performance.

In this extensive guide, we’ll dive deep into what makes Ni25 powder so special. From its composition and properties to its applications and pricing, this article is your one-stop resource for all things Ni25. Whether you’re working in aerospace, automotive, or chemical processing, this guide will help you understand how Ni25 powder can be a game-changer for your projects.


Overview of Ni25 Powder

Ni25 powder is a nickel-based alloy containing approximately 25% chromium, which gives it excellent oxidation resistance and corrosion protection at elevated temperatures. This alloy is particularly suited for applications that demand high mechanical integrity, even under extreme conditions. It maintains its strength and durability when exposed to thermal cycling, oxidizing atmospheres, and corrosive environments.

Key Features :

  • Exceptional Corrosion Resistance: Performs well in oxidizing and slightly reducing environments.
  • High-Temperature Integrity: Retains mechanical strength at temperatures up to 1000°C.
  • Thermal Stability: Withstands repeated thermal cycling without losing performance.
  • Mechanical Durability: High tensile strength and creep resistance at elevated temperatures.
  • Versatile Industrial Applications: Used in additive manufacturing, thermal spraying, and chemical processing.

Composition and Properties of Ni25 Powder

The unique chemical composition of Ni25 powder is what gives it its superior properties. By combining nickel with chromium and other alloying elements, manufacturers can create a material that excels in high-temperature environments while maintaining corrosion resistance. Below, we’ll take a closer look at the composition and mechanical properties of Ni25 powder, providing insight into why it’s so widely used.

Chemical Composition

ElementWeight Percentage (%)Function
Nickel (Ni)70.00 – 75.00Forms the base of the alloy, providing overall corrosion resistance and oxidation resistance.
Chromium (Cr)24.00 – 26.00Enhances oxidation resistance and adds high-temperature corrosion protection.
Iron (Fe)1.00 – 2.50Contributes to the mechanical strength of the alloy.
Carbon (C)0.05 maxProvides hardness and improves wear resistance.
Silicon (Si)0.50 maxEnhances oxidation resistance and improves hot-forming properties.
Manganese (Mn)0.50 maxImproves toughness and helps with deoxidation during melting.

Mechanical and Thermal Properties

PropertyValue
Density8.45 g/cm³
Melting Point1350°C – 1400°C
Ultimate Tensile Strength750-950 MPa
Yield Strength (0.2% Offset)400-620 MPa
Elongation at Break20-30%
Thermal Conductivity12.5 W/m·K
Oxidation ResistanceEffective up to 1000°C in oxidizing atmospheres.
Corrosion ResistanceExcellent in oxidizing and slightly reducing environments, such as sulfuric acid.

Why These Properties Matter

When selecting a material for high-temperature applications, you need something that can endure heat without degrading. Ni25 powder’s ability to retain its structural integrity under thermal cycling makes it the gold standard for industries like aerospace and chemical processing. Its corrosion resistance also enhances its durability, reducing the frequency of repairs and replacements, saving both time and money in the long run.


Applications of Ni25 Powder

Ni25 powder is an incredibly versatile material, used across a broad range of industries. Its combination of corrosion resistance, thermal stability, and mechanical strength makes it ideal for critical applications in challenging environments. Below, we’ll explore some of the most common uses of Ni25 powder by industry.

Common Applications

IndustryApplication
AerospaceUsed in turbine blades, exhaust systems, and combustion chambers.
AutomotiveIdeal for turbocharger components, exhaust valves, and manifolds.
Chemical ProcessingApplied in heat exchangers, reactors, and piping systems for handling corrosive fluids.
Power GenerationSuitable for gas turbines, boilers, and steam turbine components.
Oil & GasUtilized in downhole drilling equipment and high-temperature valves.
Additive ManufacturingPerfect for 3D printing high-strength, corrosion-resistant parts in aerospace and medical.
Thermal Spray CoatingsUsed for surface coatings in boilers, turbines, and chemical processing equipment.

Ni25 Powder in Aerospace Applications

In the aerospace industry, Ni25 powder is often used in gas turbine blades and combustion chambers, where oxidation resistance and high-temperature strength are critical. The ability of Ni25 to withstand thermal cycling makes it ideal for components that experience extreme heat and cooling cycles during flight operations.

Ni25 Powder in Automotive Applications

In the automotive industry, Ni25 powder is used to manufacture turbocharger components and exhaust valves. These components are subjected to high heat and pressure, making Ni25 the perfect choice for ensuring long-term durability and performance. Its corrosion resistance also makes it an excellent option for components exposed to chemical by-products from combustion.


Specifications, Sizes, and Standards for Ni25 Powder

When purchasing Ni25 powder, it’s essential to choose the right specifications to fit your specific needs. Whether you’re using it for additive manufacturing, thermal spraying, or high-performance components, the particle size, density, and composition can vary depending on the application.

Specifications and Standards

Specification/StandardDetails
UNS NumberN06625
ASTM StandardsASTM B444 (Nickel Alloy Seamless Pipe), ASTM F3055 (Powder for Additive Manufacturing)
AMS StandardsAMS 5599 (Nickel Alloy Sheet, Strip, and Plate)
ISO StandardsISO 15156-3 (Materials for use in sour gas environments)
Powder Particle SizeTypically ranges from 15 to 45 microns, depending on the application (e.g., 3D printing, thermal spray).
Density8.45 g/cm³
Melting Range1350°C – 1400°C

Available Sizes and Forms

FormAvailable Sizes
PowderParticle sizes typically range from 15 to 45 microns, ideal for additive manufacturing and thermal spraying.
Bars/RodsDiameters from 0.5 inches to 3 inches, used for structural components.
Sheets/PlatesThicknesses from 1 mm to 50 mm, suitable for heat exchangers and reactor parts.

Suppliers and Pricing of Ni25 Powder

When sourcing Ni25 powder, it’s important to find a reliable supplier who can provide high-quality material at a competitive price. Various factors, like order volume, particle size, and supplier reputation, can affect the price.

Suppliers and Pricing

SupplierPrice Range (per kg)Notes
Höganäs AB$180 – $300Specializes in metal powders for additive manufacturing and thermal spray applications.
Sandvik Materials$190 – $310Offers advanced materials for aerospace and industrial applications.
Oerlikon Metco$185 – $295Known for high-quality powders used in thermal spraying and laser cladding.
Kennametal Stellite$175 – $290Provides powders for corrosion-resistant and high-temperature applications.

The cost of Ni25 powder typically ranges from $175 to $310 per kilogram, depending on the supplier, particle size, and order volume.


Advantages and Limitations of Ni25 Powder

Like any material, Ni25 powder comes with its own set of advantages and limitations. Understanding these pros and cons can help you make an informed decision about whether this material fits your specific application needs.

Advantages

AdvantageDescription
High-Temperature Strength: Retains strength at temperatures up to 1000°C.Ideal for aerospace, automotive, and industrial applications.
Corrosion Resistance: Performs exceptionally well in oxidizing environments.Perfect for chemical processing and oil & gas industries.
Thermal Stability: Withstands thermal cycling and prolonged exposure to high heat.Ensures long service life in high-temperature environments.
Versatile Applications: Suitable for a wide range of industries, including additive manufacturing.Allows for customized components in 3D printing and thermal spraying.

Limitations

LimitationDescription
Cost: More expensive than many other nickel alloys and stainless steels.May not be suitable for budget-conscious projects.
Density: Heavier than some other materials like aluminum or titanium.Not ideal for applications where weight is a critical factor.
Machinability: Can be challenging to machine due to its high hardness.Requires specialized machining techniques, which may increase manufacturing time and cost.

Ni25 Powder vs. Other Nickel-Based Alloys

How does Ni25 powder compare to other nickel-based alloys? Below is a comparison with commonly used high-temperature materials.

AlloyStrengthsLimitations
Ni25 PowderExcellent oxidation resistance, high strength at elevated temperatures.Higher cost, more challenging to machine.
Inconel 625Superior corrosion resistance in aqueous environments.Less thermal stability than Ni25 at high temperatures.
Monel 400Excellent in marine applications due to corrosion resistance.Limited oxidation resistance at elevated temperatures.
Stainless Steel 316Lower cost, good general corrosion resistance.Poor high-temperature performance compared to Ni25.

FAQs

Have more questions about Ni25 powder? Below are answers to some of the most commonly asked questions.

QuestionAnswer
What is Ni25 powder used for?It is used in aerospace, automotive, chemical processing, and power generation industries for high-temperature, corrosion-resistant components.
How much does Ni25 powder cost?Prices typically range from $175 to $310 per kilogram, depending on the supplier, particle size, and order volume.
Can Ni25 powder be used in 3D printing?Yes, it is suitable for additive manufacturing in high-performance parts requiring corrosion resistance and thermal stability.
What industries use Ni25 powder?Industries such as aerospace, automotive, oil & gas, and chemical processing make extensive use of Ni25 for its thermal and corrosion resistance.
Is Ni25 powder weldable?Yes, it can be welded, but it requires specialized techniques due to its high melting point and oxidation resistance.
How does Ni25 powder compare to Inconel 625?While both are nickel-based alloys, Ni25 powder offers better thermal stability at elevated temperatures, but Inconel 625 excels in aqueous corrosion resistance.

Conclusion: Why Ni25 Powder is the Ideal Choice for High-Temperature and Corrosive Applications

To wrap things up, Ni25 powder is a highly versatile and high-performance material that offers excellent resistance to oxidation, corrosion, and high temperatures. Whether your focus is on aerospace, automotive, or chemical processing, Ni25 powder provides the mechanical strength and thermal stability needed for critical applications.

While it may have a higher cost compared to some other nickel-based alloys, the long-term benefits of using Ni25 powder — such as its durability and reduced maintenance — make it a worthwhile investment for demanding environments. If you’re looking for a material that can withstand the heat and perform reliably, Ni25 powder is an excellent choice.

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