NI6628 Alloy 20 Nickel-based Alloy Powder

Alloy 20 Powder Description

Alloy 20 Powder is a nickel-chromium-based material (typically with a Cr content of ~20% and additions of tungsten, molybdenum, and aluminum for performance enhancement), designed for extreme thermal and mechanical demands. The powder produced by gas atomisation exhibits a highly spherical morphology (>95% sphericity) and ensures excellent flow properties (>25 s/50g) and packing density (>4.5 g/cm³), critical for precision-controlled processes such as selective laser melting (SLM) and directed energy deposition (DED). The narrow particle size distribution (15-53 µm) and low porosity (<0.3%) enable the production of dense, structurally uniform components with minimal post-processing. The high-temperature properties of the alloy are anchored by a stable Cr₂O₃ oxide layer, which provides exceptional oxidation resistance up to 1,100 °C and robust creep resistance under prolonged stress. At 800 °C, it achieves a tensile strength of over 650 MPa and a hardness of ~250 HV, alongside remarkable corrosion resistance in sulfidising, acidic, and oxidising environments. These properties, combined with a high laser absorption rate (~70%) for efficient energy utilisation during 3D printing, make Ni20 ideal for turbine blades in aerospace, core components of nuclear reactors, and industrial high-temperature tools, where geometric accuracy and thermomechanical reliability are paramount.

Specifications of Alloy 20 Powder

Properties

Chemical Composition. %

*The above product information is based on theoretical data. For specific requirements and detailed inquiries, please contact us.

Alloy 20 Powder Applications

1. Aerospace:

Turbine blades, combustion chamber linings, and exhaust nozzles in jet engines.

Provides oxidation resistance up to 1,100 °C and creep resistance under extreme temperature fluctuations.

2. Energy Sector:

Core components of nuclear reactors, such as fuel cladding and heat exchanger tubes.

Offers radiation tolerance and resistance to stress corrosion cracking in coolant environments.

3. Additive Manufacturing:

Production of complex, nearly net-shaped parts via SLM or DED.

Applications include lightweight rocket engine components and custom medical implants with biocompatibility.

The optimised particle size (15-53 µm) and spherical morphology allow for high-quality 3D printing.

4. Industrial Tooling:

Die casting moulds and extrusion tools.

High hardness (250 HV) and resistance to thermal fatigue enhance service life in high-temperature applications.

Packaging of Alloy 20 Powder

Our products are packaged in custom boxes of various sizes based on material dimensions. Smaller items are securely packaged in PP cartons, while larger items are placed in custom wooden crates. We strictly adhere to customised packaging and use appropriate cushioning materials to ensure optimal protection during transport.

Packaging: Box, wooden crate, or customised.

Manufacturing Process

1. Testing Procedures

1. Chemical composition analysis - Verified using techniques such as GDMS or XRF to ensure compliance with purity requirements.

FAQs on Alloy Powder 20

Q1: How is Ni20 Powder produced?

A1: It is produced through gas atomisation, resulting in spherical particles (>95% sphericity) with excellent flowability (>25s/50g) and high packing density (>4.5g/cm³), ideal for additive manufacturing.

Q2: Why is Ni20 suitable for additive manufacturing (AM)?

A2: The controlled particle size (15-53 µm), low porosity (<0.3%), and high laser absorption (~70%) enable dense, crack-free 3D printed parts in the SLM/DED processes.

F3: How should Ni20 Powder be stored?

A3: Store in sealed, moisture-tight containers under inert gas (e.g. argon) to prevent oxidation. Handle in dry environments with personal protective equipment to avoid inhalation.

Performance Comparison Table with Competing Products

Related Information

1. Raw Materials - Nickel (Ni)

Nickel enhances toughness, ductility, and corrosion resistance. It stabilises the solid solution phase and improves the alloy's ability to retain strength under thermal cycles and mechanical stress.

Raw Materials - Iron (Fe)

Iron (Fe), the fourth most abundant element on Earth (5% of the Earth's crust mass), is crucial for life and industry. This magnetic metal (melting point 1,538 °C) transitions between crystalline structures and rusts (Fe₂O₃) in moisture while supporting the oxygen transport of haemoglobin. It constitutes 85% of Earth's core and primarily exists in oxide forms (hematite) and meteoric metal. Over 90% of global metal consumption is accounted for by carbon alloy steel, produced in blast furnaces, which is now being advanced with hydrogen-based "green steel" to combat 7% of CO₂ emissions. Although mining impacts ecosystems, the recyclability of over 90% reduces energy consumption by 60%. From tools of the Iron Age to King Tut's sky dagger and ancient Chinese corrosion-resistant swords, the legacy of steel spans all civilisations. Forged in dying stars, iron connects cosmic history with modern technological wonders.

Raw Materials - Chromium (Cr)

Chromium enhances the corrosion and oxidation resistance of the alloy by forming a stable, protective oxide layer on the surface. It also contributes to the overall hardness and wear resistance.