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Holmium Metal (chemical formula: Ho, CAS No.: 7440-60-0, EINECS NO.: 231-169-0) is a premium rare earth metal renowned for its exceptional ductility and unique physical-chemical properties. With a molecular weight of 164.93 and a density of 8.54g/cm³, this silver white ingot or lump boasts a melting point of 1474°C and a boiling point of 2600°C, making it stable in dry room-temperature air while exhibiting reactive characteristics in humid environments or at elevated temperatures. Available in customized sizes and purity grades ranging from 99% (2N) to 99.99% (4N), holmium metal stands out as a critical material in high-tech industries, leveraging its superior performance to drive innovation across medical, optical, magnetic, and communication sectors.
Our holmium metal is manufactured to strict purity standards, with Ho/REM ratios reaching up to 99.99% (4N) and total rare earth metal (TREM) content as high as 99.9%. Rigorous quality control ensures minimal impurities: rare earth impurities such as Eu, Gd, and Dy are limited to 0.001-0.003%, while non-rare earth impurities like Fe, Si, and Ca are controlled at 0.005-0.15%. This high purity guarantees consistent performance, reducing defects in end products and enhancing reliability in critical applications.
The ductile nature of holmium metal allows for easy processing into various forms—ingots, lumps, or customized shapes—adapting to diverse manufacturing needs. Its ability to react with cold water and rapidly with hot water, combined with stable oxidation resistance in dry conditions, makes it versatile for environments requiring controlled reactivity. With a high density and excellent thermal stability, it maintains structural integrity even at extreme temperatures, a key advantage in high-heat applications like laser technology and magnetic materials.
We offer flexible purity grades (2N, 3N, 4N) to meet specific industry requirements. Whether you need 99% pure holmium for general industrial use or 99.99% high-purity holmium for precision medical devices, our product lineup ensures a perfect match. Customized sizes further optimize compatibility with existing production lines, reducing waste and lowering processing costs for our clients.
Material name | Holmium metal |
Formula | Ho |
CAS No. | 7440-60-0 |
EINECS NO. | 231-169-0 |
Molecular Weight | 164.93 |
Density | 8.54g/cm3 |
Melting point | 1474°C |
Bolting point | 2600°C |
Appearance | Silver white ingot or lump, or other customized size |
Purity/Specification (Ho/REM) | 99%-99.99% |
Purity | 2N | 3N | 4N | 4N |
Ho/TREM(%Min.) | 99 | 99.9 | 99.99 | 99.99 |
TREM(%Min.) | 99 | 99 | 99.5 | 99.9 |
Rare Earth Impurities(in TREM,%Max.) | ||||
Eu | subtotal | 0.001 | 0.002 | 0.002 |
Gd | 0.002 | 0.003 | 0.003 | |
Tb | 0.01 | 0.003 | 0.003 | |
Dy | 0.05 | 0.001 | 0.001 | |
Er | 0.05 | 0.001 | 0.001 | |
Tm | 0.01 | 0.001 | 0.001 | |
Yb | 0.01 | 0.001 | 0.001 | |
Lu | 0.01 | 0.001 | 0.001 | |
Y | 0.03 | 0.001 | 0.001 | |
Non-Rare Earth Impurities(%Max) | ||||
Fe | 0.15 | 0.15 | 0.1 | 0.01 |
Si | 0.01 | 0.01 | 0.01 | 0.005 |
Ca | 0.05 | 0.05 | 0.05 | 0.005 |
Al | 0.01 | 0.01 | 0.01 | 0.005 |
Mg | 0.01 | 0.01 | 0.01 | 0.005 |
W | 0.05 | 0.05 | 0.05 | 0.05 |
Ta | 0.05 | 0.01 | 0.01 | 0.0005 |
0 | 0.2 | 0.15 | 0.15 | 0.015 |
C | 0.03 | 0.01 | 0.01 | 0.005 |
Cl | 0.02 | 0.01 | 0.01 | 0.005 |
Holmium laser has become a gold standard in urology and other medical specialties for non-invasive stone fragmentation. The unique spectral properties of holmium metal enable the production of lasers that target kidney stones, gallstones, and bladder stones with unparalleled accuracy. Compared to traditional surgical methods, holmium lasers minimize tissue damage, shorten recovery times, and improve patient outcomes—making holmium metal an indispensable material in modern minimally invasive surgery.
Holmium lamps leverage the metal’s ability to concentrate atoms in the arc zone, significantly boosting radiation efficiency. This results in brighter, more energy-efficient lighting solutions for industrial, medical, and scientific settings. From high-intensity discharge lamps for stadiums to precision analytical instruments, holmium-based lighting systems deliver consistent performance and longer lifespans, reducing maintenance costs and environmental impact.
As an additive in yttrium iron garnet (YIG) or yttrium aluminum garnet (YAG), holmium metal improves the magnetic properties of these materials, enhancing the efficiency and accuracy of surgical instruments. Magnetic tools doped with holmium enable precise tissue manipulation, reduce thermal damage during procedures, and enhance the control of medical devices—revolutionizing fields like neurosurgery and ophthalmology.
Holmium-doped fibers are core components in optical communication devices, including fiber lasers, amplifiers, and sensors. The metal’s unique optical properties allow for efficient signal amplification and transmission over long distances, supporting high-speed internet, 5G networks, and data centers. In fiber optic sensors, holmium-doped materials enable sensitive detection of temperature, pressure, and strain, making them vital for industrial monitoring and aerospace applications.
Our holmium metal is available in four purity grades: 2N (99%), 3N (99.9%), and two 4N variants (99.99% Ho/REM with TREM at 99.5% or 99.9%). Each grade undergoes strict testing to ensure compliance with industry standards, with impurity levels controlled to meet the specific needs of medical, industrial, and high-tech applications.
To protect against oxidation in humid air, holmium metal is sealed in vacuum-packed containers with moisture-absorbing agents. For long-term storage or international shipping, we use airtight aluminum foil bags combined with rigid packaging to prevent physical damage and exposure to moisture. Proper storage ensures the metal retains its ductility and reactivity for extended periods.
Yes, we offer customized processing for holmium metal based on client requirements. Common forms include ingots, lumps, rods, and powders, with sizes ranging from small laboratory samples to large industrial batches. Our engineering team works closely with clients to optimize dimensions for their production processes, ensuring seamless integration and maximum efficiency.
Holmium Metal (chemical formula: Ho, CAS No.: 7440-60-0, EINECS NO.: 231-169-0) is a premium rare earth metal renowned for its exceptional ductility and unique physical-chemical properties. With a molecular weight of 164.93 and a density of 8.54g/cm³, this silver white ingot or lump boasts a melting point of 1474°C and a boiling point of 2600°C, making it stable in dry room-temperature air while exhibiting reactive characteristics in humid environments or at elevated temperatures. Available in customized sizes and purity grades ranging from 99% (2N) to 99.99% (4N), holmium metal stands out as a critical material in high-tech industries, leveraging its superior performance to drive innovation across medical, optical, magnetic, and communication sectors.
Our holmium metal is manufactured to strict purity standards, with Ho/REM ratios reaching up to 99.99% (4N) and total rare earth metal (TREM) content as high as 99.9%. Rigorous quality control ensures minimal impurities: rare earth impurities such as Eu, Gd, and Dy are limited to 0.001-0.003%, while non-rare earth impurities like Fe, Si, and Ca are controlled at 0.005-0.15%. This high purity guarantees consistent performance, reducing defects in end products and enhancing reliability in critical applications.
The ductile nature of holmium metal allows for easy processing into various forms—ingots, lumps, or customized shapes—adapting to diverse manufacturing needs. Its ability to react with cold water and rapidly with hot water, combined with stable oxidation resistance in dry conditions, makes it versatile for environments requiring controlled reactivity. With a high density and excellent thermal stability, it maintains structural integrity even at extreme temperatures, a key advantage in high-heat applications like laser technology and magnetic materials.
We offer flexible purity grades (2N, 3N, 4N) to meet specific industry requirements. Whether you need 99% pure holmium for general industrial use or 99.99% high-purity holmium for precision medical devices, our product lineup ensures a perfect match. Customized sizes further optimize compatibility with existing production lines, reducing waste and lowering processing costs for our clients.
Material name | Holmium metal |
Formula | Ho |
CAS No. | 7440-60-0 |
EINECS NO. | 231-169-0 |
Molecular Weight | 164.93 |
Density | 8.54g/cm3 |
Melting point | 1474°C |
Bolting point | 2600°C |
Appearance | Silver white ingot or lump, or other customized size |
Purity/Specification (Ho/REM) | 99%-99.99% |
Purity | 2N | 3N | 4N | 4N |
Ho/TREM(%Min.) | 99 | 99.9 | 99.99 | 99.99 |
TREM(%Min.) | 99 | 99 | 99.5 | 99.9 |
Rare Earth Impurities(in TREM,%Max.) | ||||
Eu | subtotal | 0.001 | 0.002 | 0.002 |
Gd | 0.002 | 0.003 | 0.003 | |
Tb | 0.01 | 0.003 | 0.003 | |
Dy | 0.05 | 0.001 | 0.001 | |
Er | 0.05 | 0.001 | 0.001 | |
Tm | 0.01 | 0.001 | 0.001 | |
Yb | 0.01 | 0.001 | 0.001 | |
Lu | 0.01 | 0.001 | 0.001 | |
Y | 0.03 | 0.001 | 0.001 | |
Non-Rare Earth Impurities(%Max) | ||||
Fe | 0.15 | 0.15 | 0.1 | 0.01 |
Si | 0.01 | 0.01 | 0.01 | 0.005 |
Ca | 0.05 | 0.05 | 0.05 | 0.005 |
Al | 0.01 | 0.01 | 0.01 | 0.005 |
Mg | 0.01 | 0.01 | 0.01 | 0.005 |
W | 0.05 | 0.05 | 0.05 | 0.05 |
Ta | 0.05 | 0.01 | 0.01 | 0.0005 |
0 | 0.2 | 0.15 | 0.15 | 0.015 |
C | 0.03 | 0.01 | 0.01 | 0.005 |
Cl | 0.02 | 0.01 | 0.01 | 0.005 |
Holmium laser has become a gold standard in urology and other medical specialties for non-invasive stone fragmentation. The unique spectral properties of holmium metal enable the production of lasers that target kidney stones, gallstones, and bladder stones with unparalleled accuracy. Compared to traditional surgical methods, holmium lasers minimize tissue damage, shorten recovery times, and improve patient outcomes—making holmium metal an indispensable material in modern minimally invasive surgery.
Holmium lamps leverage the metal’s ability to concentrate atoms in the arc zone, significantly boosting radiation efficiency. This results in brighter, more energy-efficient lighting solutions for industrial, medical, and scientific settings. From high-intensity discharge lamps for stadiums to precision analytical instruments, holmium-based lighting systems deliver consistent performance and longer lifespans, reducing maintenance costs and environmental impact.
As an additive in yttrium iron garnet (YIG) or yttrium aluminum garnet (YAG), holmium metal improves the magnetic properties of these materials, enhancing the efficiency and accuracy of surgical instruments. Magnetic tools doped with holmium enable precise tissue manipulation, reduce thermal damage during procedures, and enhance the control of medical devices—revolutionizing fields like neurosurgery and ophthalmology.
Holmium-doped fibers are core components in optical communication devices, including fiber lasers, amplifiers, and sensors. The metal’s unique optical properties allow for efficient signal amplification and transmission over long distances, supporting high-speed internet, 5G networks, and data centers. In fiber optic sensors, holmium-doped materials enable sensitive detection of temperature, pressure, and strain, making them vital for industrial monitoring and aerospace applications.
Our holmium metal is available in four purity grades: 2N (99%), 3N (99.9%), and two 4N variants (99.99% Ho/REM with TREM at 99.5% or 99.9%). Each grade undergoes strict testing to ensure compliance with industry standards, with impurity levels controlled to meet the specific needs of medical, industrial, and high-tech applications.
To protect against oxidation in humid air, holmium metal is sealed in vacuum-packed containers with moisture-absorbing agents. For long-term storage or international shipping, we use airtight aluminum foil bags combined with rigid packaging to prevent physical damage and exposure to moisture. Proper storage ensures the metal retains its ductility and reactivity for extended periods.
Yes, we offer customized processing for holmium metal based on client requirements. Common forms include ingots, lumps, rods, and powders, with sizes ranging from small laboratory samples to large industrial batches. Our engineering team works closely with clients to optimize dimensions for their production processes, ensuring seamless integration and maximum efficiency.
