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Praseodymium Metal (Pr) is a soft, silvery-white rare-earth metal with exceptional thermal and magnetic properties, critical for advanced industrial applications. With a CAS number of 7440-10-0 and an atomic weight of 140.91 g/mol, this metal offers purity levels of 99.9%-99.99% (depending on grade). Characterized by a melting point of 931°C and a density of 6.77 g/cm³, Praseodymium Metal stands out for its ability to form stable alloys with high-temperature resistance and strong magnetic responses. Its low vapor pressure and ductility make it ideal for precision manufacturing processes requiring both strength and malleability.
High-Temperature Stability: Maintains structural integrity in oxidizing environments up to 800°C, making it a key component in superalloys for aerospace engines.
Magnetic Susceptibility: Enhances the coercivity and remanence of permanent magnets when alloyed with cobalt and iron, critical for electric vehicle motors and wind turbines.
Alloying Versatility: Forms homogeneous mixtures with aluminum, nickel, and titanium, improving corrosion resistance and creep strength in industrial coatings.
Fine Surface Finish: Available in polished ingots and granules with minimal oxide contamination, ensuring consistent performance in high-precision applications.
Low Radioactivity: Naturally occurring isotopes are non-radioactive, simplifying handling and compliance with safety regulations.
In high-temperature alloys, praseodymium is added to nickel-based superalloys such as Inconel to refine grain boundaries. This significantly improves creep resistance, oxidation stability, and mechanical durability of gas turbine blades operating under extreme heat and stress conditions.
Praseodymium is a key component in Pr–Co permanent magnetic materials used for audio speakers, precision sensors, and industrial motors. Compared with neodymium-based magnets, Pr–Co magnets provide superior thermal stability and maintain magnetic performance at higher operating temperatures.
In catalytic applications, praseodymium functions as an effective promoter in petroleum refining catalysts. It enhances hydrocracking reaction efficiency, improves catalyst selectivity, and supports the production of cleaner fuels by increasing conversion rates and reducing undesirable byproducts.
Within the electronics industry, praseodymium is deposited as thin films in magneto-optical storage devices. Its unique magneto-optical properties enhance data recording sensitivity, signal stability, and long-term reliability in advanced optical memory and information storage technologies.
In research and development, praseodymium serves as a reference material in X-ray diffraction analysis and as a dopant in single-crystal growth. These applications support solid-state physics research, enabling precise structural characterization and controlled tuning of electronic properties.
Q: What forms does Praseodymium Metal typically come in?
A: Available as ingots (≥99.9% purity), rods, granules, and sputtering targets, with custom shapes available for specialized manufacturing processes.
Q: How does Praseodymium Metal compare to other rare-earth metals in high-temperature applications?
A: It offers a balance of lower density than dysprosium and higher oxidation resistance than erbium, making it optimal for weight-sensitive high-temperature environments.
Q: Can it be used in additive manufacturing (3D printing)?
A: Yes, as a powder feedstock in laser powder bed fusion, it enables the production of complex-shaped components with enhanced thermal fatigue resistance.
Q: What precautions are needed for long-term storage?
A: Store in sealed containers under dry argon or vacuum to prevent surface oxidation; avoid exposure to moisture, which may cause mild tarnishing.
Q: Is there a minimum order quantity for custom purity grades?
A: Standard orders start at 1 kg, but smaller research quantities (10-100 g) are available upon request with certified purity analysis.
Material name | Praseodymium metal |
Formula | Pr |
CAS No. | 7440-10-0 |
EINECS NO. | 231-120-3 |
Molecular Weight | 140.91 |
Density | 6.71g/cm3 |
Melting point | 931°C |
Bolting point | 3520°C |
Appearance | Silver gray ingot or lump, or other customized size |
Purity/Specification (Pr/REM) | 99%-99.99% |
Purity | 2N | 2N | 2N5 | 2N5 | 3N | |
TRE%min. | 99 | 99 | 99.5 | 99.5 | 99.5 | |
Pr/TRE%min. | 99 | 99 | 99.5 | 99.5 | 99.9 | |
Rare earth impurities %max. | subtotal | subtotal | subtotal | subtotal | subtota | |
Non rare earth impurities | Fe | 0.3 | 0.15 | 0.12 | 0.12 | 0.05 |
Si | 0.05 | 0.05 | 0.05 | 0.03 | 0.03 | |
Ca | 0.03 | 0.02 | 0.01 | 0.01 | 0.01 | |
Mg | 0.03 | 0.02 | 0.01 | 0.01 | 0.01 | |
Al | 0.1 | 0.08 | 0.05 | 0.03 | 0.03 | |
C | 0.05 | 0.05 | 0.03 | 0.03 | 0.02 | |
O | 0.05 | 0.05 | 0.04 | 0.03 | 0.03 | |
Mo+W | 0.05 | 0.05 | 0.05 | 0.04 | 0.03 | |
Cl | 0.03 | 0.03 | 0.01 | 0.01 | 0.01 | |
S | 0.02 | 0.01 | 0.01 | 0.01 | 0.01 | |
P | 0.05 | 0.05 | 0.03 | 0.02 | 0.02 | |
Cd+Pb+Ni+Cr+Ti | 0.05 | 0.04 | 0.03 | 0.03 | 0.02 | |
Praseodymium Metal (Pr) is a soft, silvery-white rare-earth metal with exceptional thermal and magnetic properties, critical for advanced industrial applications. With a CAS number of 7440-10-0 and an atomic weight of 140.91 g/mol, this metal offers purity levels of 99.9%-99.99% (depending on grade). Characterized by a melting point of 931°C and a density of 6.77 g/cm³, Praseodymium Metal stands out for its ability to form stable alloys with high-temperature resistance and strong magnetic responses. Its low vapor pressure and ductility make it ideal for precision manufacturing processes requiring both strength and malleability.
High-Temperature Stability: Maintains structural integrity in oxidizing environments up to 800°C, making it a key component in superalloys for aerospace engines.
Magnetic Susceptibility: Enhances the coercivity and remanence of permanent magnets when alloyed with cobalt and iron, critical for electric vehicle motors and wind turbines.
Alloying Versatility: Forms homogeneous mixtures with aluminum, nickel, and titanium, improving corrosion resistance and creep strength in industrial coatings.
Fine Surface Finish: Available in polished ingots and granules with minimal oxide contamination, ensuring consistent performance in high-precision applications.
Low Radioactivity: Naturally occurring isotopes are non-radioactive, simplifying handling and compliance with safety regulations.
In high-temperature alloys, praseodymium is added to nickel-based superalloys such as Inconel to refine grain boundaries. This significantly improves creep resistance, oxidation stability, and mechanical durability of gas turbine blades operating under extreme heat and stress conditions.
Praseodymium is a key component in Pr–Co permanent magnetic materials used for audio speakers, precision sensors, and industrial motors. Compared with neodymium-based magnets, Pr–Co magnets provide superior thermal stability and maintain magnetic performance at higher operating temperatures.
In catalytic applications, praseodymium functions as an effective promoter in petroleum refining catalysts. It enhances hydrocracking reaction efficiency, improves catalyst selectivity, and supports the production of cleaner fuels by increasing conversion rates and reducing undesirable byproducts.
Within the electronics industry, praseodymium is deposited as thin films in magneto-optical storage devices. Its unique magneto-optical properties enhance data recording sensitivity, signal stability, and long-term reliability in advanced optical memory and information storage technologies.
In research and development, praseodymium serves as a reference material in X-ray diffraction analysis and as a dopant in single-crystal growth. These applications support solid-state physics research, enabling precise structural characterization and controlled tuning of electronic properties.
Q: What forms does Praseodymium Metal typically come in?
A: Available as ingots (≥99.9% purity), rods, granules, and sputtering targets, with custom shapes available for specialized manufacturing processes.
Q: How does Praseodymium Metal compare to other rare-earth metals in high-temperature applications?
A: It offers a balance of lower density than dysprosium and higher oxidation resistance than erbium, making it optimal for weight-sensitive high-temperature environments.
Q: Can it be used in additive manufacturing (3D printing)?
A: Yes, as a powder feedstock in laser powder bed fusion, it enables the production of complex-shaped components with enhanced thermal fatigue resistance.
Q: What precautions are needed for long-term storage?
A: Store in sealed containers under dry argon or vacuum to prevent surface oxidation; avoid exposure to moisture, which may cause mild tarnishing.
Q: Is there a minimum order quantity for custom purity grades?
A: Standard orders start at 1 kg, but smaller research quantities (10-100 g) are available upon request with certified purity analysis.
Material name | Praseodymium metal |
Formula | Pr |
CAS No. | 7440-10-0 |
EINECS NO. | 231-120-3 |
Molecular Weight | 140.91 |
Density | 6.71g/cm3 |
Melting point | 931°C |
Bolting point | 3520°C |
Appearance | Silver gray ingot or lump, or other customized size |
Purity/Specification (Pr/REM) | 99%-99.99% |
Purity | 2N | 2N | 2N5 | 2N5 | 3N | |
TRE%min. | 99 | 99 | 99.5 | 99.5 | 99.5 | |
Pr/TRE%min. | 99 | 99 | 99.5 | 99.5 | 99.9 | |
Rare earth impurities %max. | subtotal | subtotal | subtotal | subtotal | subtota | |
Non rare earth impurities | Fe | 0.3 | 0.15 | 0.12 | 0.12 | 0.05 |
Si | 0.05 | 0.05 | 0.05 | 0.03 | 0.03 | |
Ca | 0.03 | 0.02 | 0.01 | 0.01 | 0.01 | |
Mg | 0.03 | 0.02 | 0.01 | 0.01 | 0.01 | |
Al | 0.1 | 0.08 | 0.05 | 0.03 | 0.03 | |
C | 0.05 | 0.05 | 0.03 | 0.03 | 0.02 | |
O | 0.05 | 0.05 | 0.04 | 0.03 | 0.03 | |
Mo+W | 0.05 | 0.05 | 0.05 | 0.04 | 0.03 | |
Cl | 0.03 | 0.03 | 0.01 | 0.01 | 0.01 | |
S | 0.02 | 0.01 | 0.01 | 0.01 | 0.01 | |
P | 0.05 | 0.05 | 0.03 | 0.02 | 0.02 | |
Cd+Pb+Ni+Cr+Ti | 0.05 | 0.04 | 0.03 | 0.03 | 0.02 | |
