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Rare Earth Metals
Dysprosium Metal
CAS No.: 7429-91-6
Dysprosium Metal
1. Product Overview
Dysprosium Metal is a silvery-white heavy rare earth metal belonging to lanthanide series. It features excellent magnetic properties, widely used as additive for high-temperature NdFeB magnets, nuclear control materials, magnetostrictive alloys and rare earth functional materials.
2. Typical Specifications
(You can adjust purity standard: 99.5% / 99.9% / 99.99% Dy/TREM)
Rare Earth Purity (wt.%)
Dy / TREM: ≥99.9%
Total Rare Earth Impurities (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Ho, Er, Tm, Yb, Lu, Y): ≤0.1%
Non-Rare Earth Impurities (max, ppm)
Fe ≤ 100
Si ≤ 50
Ca ≤ 50
Mg ≤ 30
Al ≤ 50
C ≤ 200
O ≤ 300
N ≤ 100
Form
Ingot / Lump / Chunk / Foil / Rod / Custom size
3. Physical Properties
- Appearance: Silvery-white metallic solid
- Density (20 ℃): 8.55 g/cm³
- Melting Point: 1412 ℃
- Boiling Point: 2562 ℃
- Crystal Structure: Hexagonal close-packed (HCP)
- Mohs Hardness: 5.5
- Thermal Conductivity: 11 W·m⁻¹·K⁻¹
- Electrical Resistivity (20 ℃): 91 μΩ·cm
- Solubility in water: Insoluble
- Odor: Odorless
4. Chemical Properties
- Relatively stable in dry air at ambient temperature; slowly oxidizes to form Dy₂O₃ surface layer.
- Reacts vigorously with hot water, reacts with dilute mineral acids releasing hydrogen.
- Reactive with oxygen, moisture, halogens at elevated temperature.
- Oxidation state: Mainly +3.
- Air & moisture sensitive; avoid prolonged exposure to atmosphere.
5. Storage & Handling
- Storage: Sealed package under inert argon atmosphere; cool, dry warehouse, away from humid air.
- Handling: Avoid dust generation; prevent contact with water, acids.
- Packaging: Vacuum plastic bag + iron drum filled with argon protection.
6. Main Applications
- Additive for sintered NdFeB permanent magnets to improve coercivity & high-temperature demagnetization resistance
- Magnetostrictive rare earth alloys (Terfenol-D series)
- Neutron absorber material for nuclear industry
- Magneto-optical materials, rare earth luminescent materials
- Special alloy & sputtering target raw material
