GRCop-42 Copper Alloy Spherical Powder (CuCrNb) Description
GRCop-42 Copper Alloy Spherical Powder is specially formulated for the additive manufacturing of components that demand high-strength dispersion and enhanced conductivity. This powder is created through an argon and nitrogen atomization process, ensuring quality and consistency.
The inclusion of chromium and niobium in the alloy composition enables it to maintain strength at elevated temperatures. Additionally, GRCop-42 exhibits outstanding creep resistance and possesses a prolonged low-cycle fatigue life, making it an ideal material for demanding applications.
GRCop-42 Copper Alloy Spherical Powder (CuCrNb) Specifications
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Composition
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CuCrNb
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Shape
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Spherical Powder
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Density (g/cm3)
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8.79
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Particle Size (μm)
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15 to 45
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Oxygen content
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<200 ppm
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Chemical Composition (%)
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Cr
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3.1-3.4
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Nb
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2.7-3.0
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O
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0.04
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Al
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≤0.005
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Fe
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≤0.005
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Si
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≤0.005
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Cu
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Bal.
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GRCop-42 Powder Advantages
GRCop-42 is a novel copper alloy strengthened by chromium (Cr) and niobium (Nb). Unlike conventional copper alloys where strengthening elements dissolve uniformly into the matrix, Cr and Nb in GRCop-42 form stable Cr₂Nb intermetallic compounds. This unique microstructure provides several key advantages:
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Exceptional Thermal Conductivity: The incorporation of Cr₂Nb maintains excellent thermal transport properties. Specifically, GRCop-42 achieves 85% of the International Annealed Copper Standard (IACS) at room temperature, outperforming GRCop-84 (75% IACS). This enhanced heat dissipation capability makes it particularly suitable for high-temperature applications like rocket engine liners.
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Significant Strength Enhancement: The Cr₂Nb precipitates effectively inhibit grain growth, maintaining a refined microstructure that improves overall strength. Furthermore, these intermetallic compounds strengthen the material through Orowan hardening mechanism by impeding dislocation movement.
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Outstanding High-Temperature Stability: The superior thermal stability of the Cr₂Nb phase ensures reliable performance under extreme conditions. Even when exposed to severe thermal environments such as those in rocket engines, the alloy maintains its mechanical properties without significant degradation.
GRCop-42 Copper Alloy Powder Properties
GRCop-42 is a copper alloy powder specifically designed for additive manufacturing, meeting the requirements of high-strength and high-temperature applications.
- High Sphericity & Good Flowability: Ensures even spreading of the powder and excellent formation of the prints.
- Uniform Particle Size Distribution & High Packing Density: Results in high-density printed objects with low porosity and improved polishing efficiency.
- Low Oxygen Level: Enhances dimensional stability and surface finish of printed objects.
- High Laser Absorption Rate: The Cr₂Nb increases the material's laser absorption at temperatures below. Compared to pure copper and traditional copper alloy powders, GRCop-42 powder process a higher density and better surface roughness.
Spherical GRCop-42 Copper Alloy Powder Applicable Processes
- Selective Laser Melting (SLM)
- Electron Beam Melting (EBM)
- Direct Laser Deposition (DLD)
- Powder Metallurgy (PM)
- Metal Injection Molding (MIM)
- Laser Cladding
Spherical GRCop-42 Copper Alloy Powder (CuCrNb) Applications
- Aerospace Industry: GRCop-42 is often used in the aerospace sector for additive manufacturing of components such as rocket nozzles, thrusters, and other parts that require both high-strength properties and excellent thermal conductivity.
- Electronics: The high conductivity makes it suitable for applications in the electronics industry
- Energy Sector: GRCop-42 can be utilized in the energy sector for manufacturing components in power generation systems
- Automotive: the production of components like engine parts, heat exchangers, and electrical connectors.
- Medical Devices: GRCop-42 may find applications in the medical field
- Industrial Equipment: Various industrial applications
Comparison of GRCop-42 vs. GRCop-84 Copper Alloy Powders
Among Cu-Cr-Nb ternary alloys, the most prominent are GRCop-84 (Cu-8Cr-4Nb) and GRCop-42 (Cu-4Cr-2Nb).
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Characteristics
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GRCop-42
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GRCop-84
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Alloy Composition
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Cu-4Cr-2Nb (Copper-4% Chromium-2% Niobium)
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Cu-8Cr-4Nb (Copper-8% Chromium-4% Niobium)
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Strengthening Phase
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Cr₂Nb intermetallic compounds
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Cr₂Nb intermetallic compounds
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Key Advantage
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Excellent balanced performance with optimal thermal conductivity-strength balance
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Exceptional strength and creep resistance
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Thermal Conductivity
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Higher (~85% IACS)
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High (~75% IACS)
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Strength/Hardness
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High
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Very High
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Creep Resistance
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Excellent
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More Excellent
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SLM Suitability
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Well-suited with good printing performance
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Suitable, though higher powder hardness may increase processing difficulty
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Selection Consideration
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Ideal for applications requiring both good thermal conductivity and high strength
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Suitable for extreme high-temperature and stress environments where durability and creep resistance are primary concerns.
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GRCop-42 Copper Alloy Spherical Powder (CuCrNb) Packaging
Our GRCop-42 Copper Alloy Spherical Powder, CuCrNb is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
