IN625 Inconel 625 Superalloy Powder for SLM

Category	Parameter	Value / Range
Typical Applications	Suitable Components	Aero- and space engine casings, guide vanes, mounting flanges, cylinders, fuel manifolds, and other high-performance parts
Applicable Processes	Additive Manufacturing	SLM (Selective Laser Melting), LSF (Laser Solid Forming)
Chemical Composition (wt.%)	C	≤ 0.1
	Cr	20.0–23.0
	Ni	Balance
	Co	≤ 1.0
	Nb	3.15–4.15
	Mo	8.0–10.0
	Al	≤ 0.4
	Ti	≤ 0.4
	Fe	≤ 5.0
	Si	≤ 0.5
	Mn	≤ 0.5
	S	≤ 0.015
	P	≤ 0.015
	Cu	≤ 0.07
	O	≤ 0.02
	N	≤ 0.02
Physical Properties	Particle Size (D10 / D50 / D90)	≥15 μm / 30–40 μm / ≤60 μm
	Sphericity	≥ 0.9
	Apparent Density (g/cm³)	≥ 4.4
	Tap Density (g/cm³)	≥ 5.0
	Flowability (s/50g)	≤ 18
Mechanical Properties (Heat-Treated)	Test Temperature	Room Temp / 815°C
	Tensile Strength (MPa)	≥ 830 / ≥ 350
	Yield Strength (MPa)	≥ 410 / ≥ 240
	Elongation (%)	≥ 35.0 / ≥ 30.0

1. Advantages and Features of This IN625 (Inconel 625) Superalloy Powder

1.1 Optimized for Industrial Applications

IN625 powder is specifically engineered for demanding aerospace and space applications requiring exceptional high-temperature performance and corrosion resistance. With long-term service capability up to 815°C, this nickel-based superalloy powder is ideal for manufacturing critical components such as aero-engine casings, guide vanes, mounting flanges, cylinders, fuel manifolds, and other high-performance parts through additive manufacturing.

1.2 Excellent SLM Processability

The powder’s optimized particle size distribution (D10 ≥15 μm / D50 30–40 μm / D90 ≤60 μm) ensures superior flowability (≤18 s/50g) and excellent powder bed uniformity during SLM processing. High sphericity (≥0.9) minimizes satellite particles and promotes consistent layer spreading, resulting in defect-free printed components with minimal porosity and excellent surface finish.

1.3 Robust Mechanical Performance

IN625 delivers outstanding mechanical properties across temperature ranges. At room temperature, it achieves tensile strength ≥830 MPa, yield strength ≥410 MPa, and elongation ≥35.0%. Even at elevated temperatures of 815°C, it maintains impressive performance with tensile strength ≥350 MPa, yield strength ≥240 MPa, and elongation ≥30.0%, ensuring structural integrity in extreme environments.

1.4 Stable Physical Properties

Consistent powder characteristics including apparent density ≥4.4 g/cm³ and tap density ≥5.0 g/cm³ guarantee reliable packing behavior and predictable thermal conductivity during the SLM process. These stable physical properties contribute to uniform heat distribution and controlled solidification, minimizing residual stress and distortion.

1.5 High Purity & Compositional Control

Strict control of interstitial elements (O ≤0.02%, N ≤0.02%, S ≤0.015%, P ≤0.015%) ensures optimal high-temperature strength and corrosion resistance. The balanced composition with precise chromium (20.0–23.0%), molybdenum (8.0–10.0%), and niobium (3.15–4.15%) content provides excellent oxidation resistance while maintaining weldability and fabricability.

2. IN625 (Inconel 625) Superalloy Powder Material Overview

2.1 Chemical Composition Characteristics

IN625 is a nickel-based solid solution strengthened superalloy with the following composition (wt.%):

Nickel (Ni): Balance (primary matrix element)
Chromium (Cr): 20.0–23.0% (provides oxidation and corrosion resistance)
Molybdenum (Mo): 8.0–10.0% (enhances strength and creep resistance)
Niobium (Nb): 3.15–4.15% (provides precipitation strengthening)
Iron (Fe): ≤5.0% (cost-effective strengthening element)
Cobalt (Co): ≤1.0% (improves high-temperature stability)
Carbon (C): ≤0.1% (grain boundary strengthening)
Trace Elements: Ti ≤0.4%, Al ≤0.4%, Si ≤0.5%, Mn ≤0.5%, Cu ≤0.07%
Interstitials: O ≤0.02%, N ≤0.02% (strictly controlled for optimal properties)

2.2 Powder Characteristics

Particle Size Distribution: D10 ≥15 μm, D50 30–40 μm, D90 ≤60 μm
Morphology: High sphericity ≥0.9 with smooth surfaces
Density: Apparent density ≥4.4 g/cm³, Tap density ≥5.0 g/cm³
Flowability: ≤18 seconds per 50 grams (Hall flowmeter)
Oxygen Content: ≤0.02% (maintains ductility and weldability)

3. Technical Advantages

IN625 powder offers several key technical advantages for SLM applications:

Superior High-Temperature Strength: Maintains mechanical integrity up to 815°C, making it ideal for hot-section components
Excellent Corrosion Resistance: Chromium and molybdenum content provide exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking
Outstanding Fabricability: Good weldability and formability enable complex geometries and post-processing operations
Controlled Thermal Expansion: Balanced composition ensures predictable thermal behavior during heating and cooling cycles
Consistent Print Quality: Optimized powder characteristics minimize defects and ensure repeatable manufacturing results
Versatile Process Compatibility: Suitable for both SLM and LSF (Laser Solid Forming) processes

4. SLM Process Parameter Recommendations

For optimal results when processing IN625 powder via SLM:

Laser Power: 280–450 W (depending on layer thickness and feature size)
Scan Speed: 800–1300 mm/s
Hatch Spacing: 80–120 μm
Layer Thickness: 30–50 μm
Scan Strategy: Island scanning or chessboard pattern to minimize residual stress
Preheat Temperature: 80–150°C (reduces thermal gradients and distortion)
Atmosphere: Argon or nitrogen with oxygen content <100 ppm
Build Orientation: Consider thermal management and support structure requirements for overhangs
Energy Density: 40–60 J/mm³ (adjust based on specific equipment and part geometry)

5. Post-Processing Procedures

Recommended post-processing steps for IN625 SLM components:

Stress Relief Annealing: 1095–1120°C for 1–2 hours, followed by rapid cooling (water quench or air cool)
Solution Annealing (if required): 1150°C for 1 hour, rapid cooling per AMS 5666/ASTM B446 standards
Support Removal: Mechanical or EDM methods for delicate features
Surface Finishing: Grinding, polishing, or shot peening as needed
Quality Inspection: Dimensional verification, surface roughness measurement, and non-destructive testing
Final Heat Treatment: Depending on specific application requirements

6. Performance Specifications

Mechanical Properties (Heat-Treated Condition)

Property	Room Temperature	815°C
Tensile Strength	≥830 MPa	≥350 MPa
Yield Strength (0.2%)	≥410 MPa	≥240 MPa
Elongation	≥35.0%	≥30.0%

Physical Properties

Density: ~8.44 g/cm³ (bulk material)
Melting Range: 1290–1350°C
Thermal Conductivity: ~9.8 W/m·K at 100°C
Coefficient of Thermal Expansion: ~12.9 × 10⁻⁶/°C (20–100°C)

7. Application Areas

IN625 powder is particularly suited for:

Aerospace: Engine casings, guide vanes, mounting flanges, fuel manifolds, turbine components
Space: Rocket engine components, satellite propulsion systems, thermal protection systems
Energy: Gas turbine components, heat exchangers, nuclear reactor parts
Industrial: Chemical processing equipment, marine components, oil and gas applications
Research & Development: Prototype testing, material validation, process optimization studies

8. Comparison with Similar Powders

Parameter	IN625	Hastelloy X	Inconel 718	Haynes 230
Max Service Temp	815°C	900°C	700°C	1150°C
Tensile Strength (RT)	≥830 MPa	≥700 MPa	≥1200 MPa	≥800 MPa
Corrosion Resistance	Excellent	Good	Good	Excellent
Fabricability	Excellent	Excellent	Good	Moderate
Cost	Moderate	Moderate	High	Very High
SLM Suitability	Excellent	Excellent	Good	Good
Nb Content	3.15–4.15%	None	5.0–5.5%	None

9. Precautions

When working with IN625 powder for SLM:

Powder Handling: Use appropriate PPE and follow safety protocols for metal powder handling
Storage: Store in sealed containers under inert atmosphere to prevent moisture absorption and oxidation
Recycling: Limit powder reuse cycles to maintain consistent properties; monitor oxygen content regularly
Thermal Management: Account for high thermal conductivity during build planning to avoid overheating
Support Structures: Design adequate supports for overhangs and thin features to prevent warpage
Post-Processing: Plan for potential distortion during stress relief and heat treatment operations
Heat Treatment: Follow AMS 5666/ASTM B446 standards for optimal mechanical properties

10. Summary

IN625 powder, also known as Inconel 625 powder, is a premium nickel-based superalloy specifically engineered as additive manufacturing powder for selective laser melting (SLM) applications. This high-temperature alloy powder offers exceptional corrosion resistance and high-temperature strength, making it ideal for aerospace AM materials and critical aero-engine components such as gas turbine powder applications. As a nickel-chromium-molybdenum powder with spherical superalloy powder morphology, it ensures optimal SLM processability and consistent build quality. The heat-resistant powder is perfect for demanding metal AM powder requirements in chemical processing powder applications, and Forgecise customization services can tailor AM material specifications to meet specific project needs, whether for research, prototyping, or industrial-scale production of high-performance components requiring oxidation resistant powder characteristics.
IN625 (Inconel 625) superalloy powder represents an excellent choice for SLM manufacturing of high-performance components requiring exceptional corrosion resistance, good high-temperature strength up to 815°C, and reliable mechanical performance. Its optimized powder characteristics ensure excellent processability, while the balanced chemical composition with niobium strengthening provides the ideal combination of strength, corrosion resistance, and thermal stability for demanding aerospace, space, and industrial applications. With proper process parameters and post-processing, IN625 enables the production of complex, high-performance components that would be difficult or impossible to manufacture using traditional methods.

11. Customization Services by Forgecise

Forgecise delivers comprehensive superalloy powder customization solutions, spanning the complete spectrum from standard high-temperature formulations to customer-specific high-performance nickel-based superalloys. We support mainstream superalloy grades including Haynes 230, Inconel series, and Hastelloy variants, with the capability to precisely tailor chemical composition, particle size distribution, sphericity, oxygen/nitrogen content, and thermal expansion coefficient to match your exact industrial and manufacturing requirements. Our superalloy powders are optimized for demanding additive manufacturing processes including SLM and EBM, ensuring consistent printability, high density, superior high-temperature mechanical properties, and reliable performance in your final aerospace, energy, and industrial components.

FAQ:

Q1: What types of High-Temperature Alloy powders can Forgecise customize?

A: We provide comprehensive high-temperature alloy powder customization solutions tailored for extreme environment applications in aerospace, energy, and industrial sectors:
Haynes 230 Series (Nickel-Chromium-Tungsten-Molybdenum): Our flagship high-temperature superalloy offering exceptional oxidation resistance and thermal stability. Features tensile strength ≥800 MPa at room temperature and ≥230 MPa at 900°C, with elongation ≥30%. Ideal for aero-engine combustion chambers, turbine components, and high-temperature furnace fixtures.
Inconel Series (Nickel-Chromium-Iron): Including Inconel 625, 718, and 738 formulations optimized for high-strength, corrosion-resistant applications. Inconel 718 delivers outstanding tensile strength (≥1200 MPa) and excellent fatigue resistance for turbine blades and rocket engine components.
Hastelloy Series (Nickel-Molybdenum-Chromium): Such as Hastelloy X and C-276, designed for extreme corrosion resistance in aggressive chemical environments while maintaining high-temperature strength. Perfect for chemical processing equipment and exhaust systems.

Q2: Can the particle size and morphology of customized High-Temperature Alloy powders be precisely controlled?

A: Absolutely. High-temperature alloys require stringent control to ensure defect-free printing, consistent high-temperature performance, and reliable long-term service in extreme environments. We ensure:
Particle Size Range: Fully customizable D50 from 15–65 μm.
15–45 μm: Optimized for high-precision SLM to achieve fine surface finishes and complex geometries critical for thin-walled combustion chambers and intricate cooling channels.
45–105 μm: Suitable for larger-format printers, EBM processes, or components requiring higher build rates without sacrificing density.
Morphology & Flowability: We guarantee high sphericity (>95%) and smooth surfaces with minimal satellite particles. This ensures excellent flowability (≤18 s/50g for Haynes 230) and high packing density, which are critical for uniform powder spreading, reducing porosity, and achieving >99.5% relative density in printed high-temperature components.
Special Handling: High-temperature alloy powders are sensitive to oxygen and nitrogen pickup, which can compromise high-temperature strength and oxidation resistance. We provide inert gas packaging and recommend storage under argon atmosphere to maintain interstitial element levels (O < 0.02%, N < 0.02%) throughout the printing lifecycle.

Q3: How long does the customization process take? How is quality guaranteed?

Development Timeline: Small-batch prototyping (1–10kg) typically takes 3–4 weeks. Mass production timelines depend on order volume and atomization scheduling.
Quality Assurance: Tool steel powders are sensitive to moisture and oxidation. Every batch comes with a comprehensive Certificate of Analysis (CoA), including:Chemical Composition: Precise ICP analysis of alloying elements (Ni, Co, Mo, Ti) and interstitials (O, N, C). Low carbon content is critical for weldability.
Particle Size Distribution: Laser diffraction analysis (D10, D50, D90) to ensure printability.
Powder Characterization: Hall Flowmeter testing and Apparent/Tapped Density measurements.
Morphology: SEM imaging to verify sphericity and check for internal porosity or satellites.
Standards Compliance: We strictly adhere to ASTM and ISO standards for metal powders to ensure consistency and repeatability in your additive manufacturing process.

Q4: What is the minimum order quantity (MOQ)? Do you support R&D-scale small batches?

A: We offer flexible solutions to support every stage of innovation:
R&D Validation: We support orders starting from 1kg, allowing researchers and mold designers to screen materials and optimize print parameters (laser power, scan speed) without high inventory costs.
Pilot Production: 10–100kg batches with rapid delivery to support pilot runs, mold trials, and small-series manufacturing.
Scaled Supply: We have ton-scale continuous production capacity to ensure a stable supply chain for industrial manufacturing and large-scale mold production.
We understand that material innovation starts small, so we provide barrier-free access for startups, universities, and research labs developing next-generation tooling.

Q5: How do I initiate a customization project? What information is required?

A: Three simple steps to get started:
Requirement Discussion: Provide your target application (e.g., injection molding inserts, aerospace brackets, cutting tools), key performance needs (hardness, toughness, thermal conductivity), and the specific 3D printing equipment you are using.
Solution Design: Our materials engineers will recommend the optimal alloy system, particle size distribution, and atomization process to balance performance, cost, and printability.
Sample Confirmation: We deliver prototype powder → You validate via printing and heat treatment → Mass production delivery upon approval.
Simply submit your preliminary requirements via email or our online form, and we will provide technical support within 48 hours.

Key Features

High Speed, High Precision, High Quality

Laboratory setting showing gloved hands holding innovative 3D printed metal structures.

Forgecise Metal 3D Printers – SLM Series

Excellent as-built surface finish – Parts achieve good surface quality without post-polishing.
High dimensional accuracy – Ideal for producing precision prototypes.
Direct fabrication of metal end-use parts – Eliminates intermediate steps.
Fully dense metallurgical structure (>99% density) – Eliminating the need for post-processing.
Rapid build times – Parts can be completed depending on size and complexity.
Complex geometries made possible – Functional features such as snap-fits and living hinges can be printed directly.
Broad material compatibility – Supports a wide range of metal powders.
Perfect for custom, low-volume production – small-batch manufacturing.

IN625 Inconel 625 Superalloy Powder for SLM | High-Temperature AM Material | Forgecise

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