Refractory Metal
Products
Your Premier Supplier of High-Quality
Molybdenum Products
Located strategically in an area renowned for its connections and expertise in the field of refractory metals, EST Metal stands as your trusted partner for superior molybdenum products. Leveraging our strategic location, we have cultivated strong connections within the industry, enabling us to procure the finest quality materials and deliver exceptional solutions to our clients worldwide.
Molybdenum Sheets
Thickness Range: 0.1 mm to 7.0 mm
Diameter Range: 2.5 mm to 150.0 mm
Rectangular Molybdenum
Thickness Range: 0.1 mm to 5.0 mm
Long Side: 1.0 mm to 70.0 mm
Short Side: 0.2 mm to 10.0 mm
Applications
Our molybdenum products find utility in various industrial applications:
W/Mo-Cu Wafer in LED Lighting
Arcing Contacts and Vacuum Contacts in high and medium voltage breakers or vacuum interrupters
Electrodes in electric spark erosion cutting machines
Heat Sinks as passive cooling elements of electronic devices
Electrodes for Resistance Welding
Advantages
High Arc Resistance combined with good electrical conductivity
High Thermal Conductivity
Low Thermal Expansion
Explore our range of molybdenum products and experience the EST Metal advantage — where quality meets reliability through strategic sourcing and industry connections.
Niobium Bars Specifications
Standard: ASTM B392, RO4210, or RO4200
Type:
Pure Niobium Bar
Niobium Alloy Bar
Niobium Bar Grades:
R04200
R04210
R04251
R04261
Specifications: ASTM B392, ASME SB392
Size: Diameter 3.0mm to 65mm x Length 3000mm Processing Method : Sintering Polishing Grinding Cold Rotay Swaging Forging
| Designation | d(mm) | Diameter tolerance (mm) | classification | |||
| Sintering | forging | Flattening | Grinding Or | |||
| (black) | (black) | machinina | ||||
| 3.0~3.5 | ±0.05 | ±0.05 | 500~1500 | ±5 | ||
| 3.5~4.5 | ±0.07 | ±0.07 | —— | 500~1500 | ±5 | |
| Nb1 | =4.5~10.0 | ±0.10 | ±0.1 | 500~1500 | ±5 | |
| Nb2 | >10~13 | ±0.15 | ±0.15 | 300~1500 | ±5 | |
| F Nb1 | ≥13~16 | ±0.2 | 200~1500 | ±20 | ||
| F Nb2 | =16~18 | ±1.0 | ±0.3 | 200~1500 | ±20 | |
| R04210-2 | >18~25 | ±1.5 | ±0.4 | 150~1500 | ±20 | |
| R04261-4 | =25~40 | ±2.0 | ±0.5 | 100~1500 | ±20 | |
| =40~50 | ±2.5 | ±0.6 | 100~1500 | ±20 | ||
| =50~65 | ±3.0 | ±0.8 | 100~1500 | ±20 | ||
| =65~200 | ±3.5 | ±1.0 | 100~1500 | ±20 | ||
Niobium is a refractory metal known for its soft and ductile properties. It has a shiny white color but takes on a bluish tint when exposed to air at room temperature. With a high melting point, niobium finds applications in high-temperature engineering systems like those utilized in the Gemini space program. Additionally, it is favored in the nuclear industry due to its low capture cross-section for thermal neutrons. When alloyed with zirconium, niobium exhibits superconductive properties, making it valuable in the production of superconductive magnets. Moreover, its attractive shiny blue tint has led to its use in body jewelry.
Grade: Nb1, Nb2, Nb Alloy
Size: Customized
Certification: ISO9001:2008
Pure Metal: Niobium (99.9%, 99.95%)
Alloy: Nb-1%Zr, Nb-10%Zr, Nb-47%Ti
Corrosion Resistance:
Niobium demonstrates exceptional corrosion resistance, making it ideal for demanding applications. It finds common use in overhead condensers and related heat/recovery sections of nitric acid facilities. Its benefits include exceptional durability, excellent heat transfer properties, prolonged performance without lost production, and the elimination of the added expense of backup equipment.
Chemical Composition:
| UNS | Type | C | O | N | H | Ta | Fe | Ti | W | Mo | Si | Ni | Zr | Nb |
| R04210 | Pure | 0.004 | 0.015 | 0.003 | 0.0015 | 0.05 | 0.004 | 0.002 | 0.005 | 0.005 | 0.004 | 0.002 | / | Balance |
| R04261 | Nb-Zr | 0.004 | 0.015 | 0.003 | 0.0015 | 0.05 | 0.004 | 0.002 | 0.005 | 0.005 | 0.004 | 0.002 | 1 | Balance |
| Nb-Zr | 0.004 | 0.015 | 0.003 | 0.0015 | 0.05 | 0.004 | 0.002 | 0.005 | 0.005 | 0.004 | 0.002 | 10 | Balance |
Tantalum is a lustrous, silvery-colored metal known for its heaviness, density, malleability, and ductility in its pure form. It is typically found in small quantities in minerals, often in association with niobium. The isolation process involves conversion to the oxide followed by the formation of the fluoro-complex, K2TaF7, from which the pure metal is obtained via electrolysis.
Specifications:
Available Purity: 99.95%
Dimension: Customizable as per your request
Available Shapes: Round, Rectangle
Density: 16.654 g/cm³
Melting Point: 2996°C
Boiling Point: 5425°C
Chemistry %
| Designation | Chief component | Impurities maxmium | |||||||||||
| Ta | Nb | Fe | Si | Ni | W | Mo | Ti | Nb | O | C | H | N | |
| Ta1 | Remainder | 0.004 | 0.003 | 0.002 | 0.004 | 0.004 | 0.002 | 0.03 | 0.015 | 0.004 | 0.0015 | 0.002 | |
| Ta2 | Remainder | 0.01 | 0.01 | 0.005 | 0.02 | 0.02 | 0.005 | 0.08 | 0.02 | 0.01 | 0.0015 | 0.01 | |
| TaNb3 | Remainder | 3.5 | 0.01 | 0.01 | 0.005 | 0.02 | 0.02 | 0.005 | 0.02 | 0.01 | 0.0015 | 0.01 | |
| TaNb20 | Remainder | 17.023.0 | 0.01 | 0.01 | 0.005 | 0.02 | 0.02 | 0.005 | 0.02 | 0.01 | 0.0015 | 0.01 | |
| Ta2.5W | Remainder | 0.005 | 0.003 | 0.002 | 3 | 0.006 | 0.002 | 0.04 | 0.015 | 0.005 | 0.0015 | 0.006 |
Chemical composition
| Chemical Requrements: | ||||
| Content,Max,Weight % | ||||
| Element | Grand:R05200 | Grand:R05255 | Grand:R05252 | Grand:R05240 |
| Unalloyed | 90%Tantalum | 97.5%Tantalum | 60%Tantalum | |
| Tantalum | 10%Tungsten | 2.5%Tungsten | 40%Niobium | |
| C | 0.01 | 0.01 | 0.01 | 0.01 |
| 0 | 0.015 | 0.015 | 0.015 | 0.02 |
| N | 0.01 | 0.01 | 0.01 | 0.01 |
| H | 0.0015 | 0.0015 | 0.0015 | 0.0015 |
| Fe | 0.01 | 0.01 | 0.01 | 0.01 |
| Mo | 0.02 | 0.02 | 2 | 0.02 |
| Nb | 0.1 | 0.1 | 0.5 | 35.0~42.0 |
| Ni | 0.01 | 0.01 | 0.01 | 0.01 |
| Si | 0.005 | 0.005 | 0.005 | 0.005 |
| Ti | 0.01 | 0.01 | 0.01 | 0.01 |
| W | 0.05 | 9.0～11.0 | 2.0~3.5 | 0.05 |
| Ta | Remainder | Remainder | Remainder | Remainder |
Tungsten Wire Twisted is a specialized form of tungsten wire that is braided or twisted together. It boasts exceptional purity, high density, and a range of grades tailored to specific applications. With outstanding features such as a high melting point, resistance to oxidation, and corrosion resistance, tungsten wire twisted finds utility in various industrial sectors.
Specifications:
Purity: 99.95% (W1)
Density: 19.3 g/cm³
Grades: W1, W2, WAL1, WAL2
Shape: Customizable as per drawing
Features:
High melting point
High-temperature oxidation resistance
Long service life
Resistance to corrosion
Applications:
Tungsten Wire Twisted is utilized in diverse applications, including:
– Manufacturing filaments for incandescent lamps, fluorescent lamps, and halogen lamps.
Electrodes for HID lamps.
– Heating components in various industrial processes.
– Vacuum metalizing coils for coating applications.
– TIG welding electrodes for precise and high-performance welding.
Dimension:
Min Diameter (mm): 0.02 (WAL1, WAL2 Black Wire), 0.005 (W1, W2 White Wire), 0.4 (W1, W2)
Max Diameter (mm): 1.8 (WAL1, WAL2 Black Wire), 0.35 (W1, W2 White Wire), 0.8 (W1, W2)
Chemical Composition:
| Brand | Tungsten Content /%≥ | The sum of impurity elements /%≤ | The content of each element /%≤ |
| WAl1,WAl2 | 99.95 | 0.05 | 0.01 |
| W1 | 99.95 | 0.05 | 0.01 |
| W2 | 99.92 | 0.02 | 0.01 |
Application by Grade:
WAL1: Manufacturing wire of high-color lamp, shockproof lamp wire, double-spiral wire, incandescent lamp wire, cathode of transmitting tube, hyperthermia electrode, reaming tungsten wire, folding heating cord of electron tube.
WAL2: Manufacturing wire of fluorescent lamp, heating cord of electron tube, incandescent lamp wire, reaming tungsten wire, folding heating cord of electron tube, grid wire, cathode.
W1: Manufacturing reaming tungsten wire, heating components.
W2: Manufacturing grid side rod of electron tube, reaming tungsten wire.
This overview encapsulates the characteristics, specifications, applications, and chemical composition of tungsten wire twisted, offering a comprehensive understanding of its versatility and utility in various industries.
A Tungsten Boat is a specialized vessel or container made from tungsten, typically in the shape of a boat or trough. It is commonly used in high-temperature environments and vacuum applications, particularly in material deposition processes such as thermal evaporation or sputtering.
Size Options: All kinds of Evaporation Boat and Coil of Tungsten for vacuum metalizing are available according to the requests of customers.
Characteristics:
Material: Tungsten, known for its high melting point and excellent thermal and electrical conductivity.
Shape: Boat-shaped or trough-shaped, with a hollow interior to hold materials.
High Temperature Resistance: Tungsten boats can withstand extremely high temperatures, making them suitable for use in vacuum chambers and high-temperature processes.
Chemical Stability: Tungsten exhibits excellent chemical stability, ensuring that the boat does not react with the materials being heated or evaporated.
Durable: Tungsten boats are robust and durable, capable of withstanding repeated heating and cooling cycles without deformation or damage.
Applications:
Thin Film Deposition: Tungsten boats are commonly used in physical vapor deposition techniques such as thermal evaporation and electron beam evaporation to deposit thin films of materials onto substrates.
Semiconductor Industry: Tungsten boats are used in semiconductor manufacturing processes for deposition of metal or semiconductor thin films used in integrated circuits and microelectronics.
Research and Development: Tungsten boats find applications in research laboratories and academic institutions for various experiments and material deposition studies.
Optical Coating: Tungsten boats are utilized in optical coating processes to deposit thin films on optical components for applications in lenses, mirrors, and filters.
Surface Modification: Tungsten boats can be used to modify the surface properties of materials through deposition of thin films, coatings, or layers.
Tungsten Boats from EST Metal offer a wide range of size options, ensuring that customers can obtain the perfect vessel for their vacuum metalizing needs.