Pure Tungsten
About Us
Tungsten We specialize in supplying high-purity, high-density industrial-grade pure tungsten materials and precision components, covering a full range of products from basic profiles to custom-machined parts. We provide critical material support for high-end fields such as semiconductor, vacuum, high-temperature, and X-ray equipment.
Why Choose Us
Competitive Pricing
We offer competitive pricing for our services without compromising on quality. Our prices are transparent, and we do not believe in hidden charges or fees.
Quality Assurance
We have a rigorous quality assurance process in place to ensure that all our services meet the highest standards of quality. Our team of quality analysts checks each project thoroughly before it is delivered to the client.
Best After Service
Provide professional installation and training. Detailed operation manual and video for customer installation. Any problems will be solved within 24 hours. Broken parts will be sent to the customer by air during the guarantee period.
Customization Services
We understand that each customer's requirements are unique, and thus, we provide customization services. We are very glad to closely collaborate with customers, understand their specific needs, and provide tailored solutions accordingly.
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Tungsten TubeHigh-quality tungsten tubes are precision-machined from pure tungsten or tungsten alloys. Tungsten's high melting point, high density, corrosion resistance, and low coefficient of thermal...read more -
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Tungsten Surgical Electrode NeedleTungsten surgical electrode Needles are made of high-purity tungsten rods through rotary forging, annealing, and fine grinding. The tip angle is optional at 15–25°, and the surface is bright...read more -
![Wolfram Tungsten Electrode]()
Wolfram Tungsten ElectrodeThe Wolfram Tungsten electrodes are made of high-purity tungsten rods through rotary forging, annealing, and precision grinding. The ends can be sharpened or flattened, and diameters of 0.5–10 mm...read more -
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Tungsten Ion Injector PartsTungsten ion-implanted parts are mainly used in the semiconductor industry for ion implantation, helping to produce high-performance chips. Besides, they are also used in high-temperature parts in...read more -
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Tungsten Ion Implanter PartsWe supply tungsten, molybdenum, titanium spare parts for ion implanter in OEM quality. Our main products including cathode, arc chamber, repeller, side/end plate and fastener in ion source. Our...read more -
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Tungsten Ion Implantation Spare PartsWe provides high quality, precision machined molybdenum and tungsten components for processing equipment used in the manufacture of semiconductors, including Ion Implantation, MOCVD, CVD, PVD.Our...read more -
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Tungsten Evaporation BoatTungsten boats are widely used in vacuum coating industries such as gold plating, evaporators, imaging tube mirrors, heating containers, electron beam painting, household appliances (shells),...read more -
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Tungsten BoatTungsten boat is made of Tungsten sheet through a process of cutting, bending, welding, and riveting. Tungsten has a high-temperature strength and good resistance as well as thermal and electrical...read more -
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High Purity Tungsten Boat For EvaporationA tungsten boat is a common tool used in thin film deposition processes, particularly in physical vapor deposition (PVD) techniques such as thermal evaporation. It's essentially a boat-shaped...read more -
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Tungsten Boats For EvaporationTungsten evaporation boats are widely used in vacuum coating, semiconductor manufacturing, metal sintering, and lab research. They help evaporate metals, deposit thin films, and sinter refractory...read more -
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Tungsten Crucible Cover For Crystal Growth FurnaceAs the heat shield parts of sapphire growth furnace, the most important efforts made by tungsten crucible cover and tungsten heat shield are sealing the products inside the furnace and keeping the...read more
Properties Of Pure Tungsten
| Density | lb/in3 | 0.7 |
| gm/cm3 | 19.27 | |
| Melting Point | °F | 6170 |
| °C | 3410 | |
| Thermal Conductivity | Cal/cm2/cm°C/sec | 0.48 |
| Specific Heat | Cal/gm/°C | 0.032 |
| Coefficient of Linear Thermal Expansion | micro-in/°F x 10-6 | 4.3 |
| micro-in/°C x 10-6 | 2.4 | |
| Electrical Resistivity | micro-ohm-cm | 5.5 |
| Tensile Strength | KSI (Mpa)-RT | 250 (1725) |
| KSI (Mpa)-500°C | 150 (1035) | |
| KSI (Mpa)-1000°C | 75 (515) | |
| Elongation | % in 1.0". | -- |
| Hardness | DPH | 300 |
| Modulus of Elasticity | KSI | 58000 |
| Gpa | 400 |
| Pure Tungsten Product Specifications Reference Table | ||||
| Form | Size range | Standard tolerance grades | Surface condition | Status of supplied materials |
| Plates/Sheets/Foils |
Thickness:0.1mm - 50mm Width: ≤500mm |
±2%/±0.05mm |
Machined/ground/polished/cleaned
|
Sintered/stress-relieved/annealed |
| Rods/Bars |
Dia. : 1mm - 150mm Length:≤2000mm |
±1%/ ±0.1mm |
Ground/centerless ground/turned
|
Sintered/forged/annealed |
| Wires |
Dia. : 0.1mm - 3mm |
±0.005mm - ±0.02mm |
—— |
Drawn/annealed |
| Custom-made Parts |
acc. the customer drawing |
acc. the customer drawing |
acc. the customer drawing |
Based on application requirements |
Forms: plates/sheets/foils
Specification: (1.0-42.0)mm x (30-450)mm x≤500mm.
Purity: 99.95%
Standard: GB/T3875 ASTM B760 GB/T 3975.
Size tolerance: ±0.025mm.
Squareness: 0.025mm.
Surface roughness: Ra 0.8.
Forms: rods/bars/wires
Standards: ASTM B760, GB/T 4187
Purity: ≥99.95%
Density: 18.3 g/cm3
Melting point: 3,410 ℃
Size: Custom diameter and length. Diameter: 0.5 - 200 mm
Surface: Sintering surface, forged surface, ground surface, polished surface
Process: Powder metallurgy
Filaments
Vacuum Furnaces
Electrical Contacts
Glass-to-metal Seals
Supports
Electrodes, Cathodes And Anodes
Electronics
Radiation Shielding
Medical Devices
X-ray Targets
Ion Implantation Parts
Windings And Heating Elements For Electrical Furnaces
Sputtering Targets
Heat Shields
Heat Bodies
Tungsten Boats And Crucibles
Material Properties & Engineering Selection
Pure tungsten, due to its unique physical properties, is a key material in high-end industrial applications.
Key Physical Properties
| Performance indicators | Value | Remarks |
| Density | 19.1 - 19.3 g/cm³ | |
| Melting point | ~3422°C | |
| Thermal conductivity (20°C) | 155 - 175 W/(m·K) | Providing efficient heat dissipation capabilities |
| Resistivity (20°C) | ~5.6×10⁻⁸ Ω·m | Affecting the design of heating elements |
| Coefficient of thermal expansion | 4.4 - 4.6×10⁻⁶ /K | Matching key thermal management designs |
Recommend Product Forms Based on Applications
| Application Scenarios | Recommended Forms | Core Strengths and Areas of Focus |
| Vacuum coating and evaporation | Boat, foil, wire, target | High purity, low outgassing, and customized evaporation shapes ensure coating uniformity. |
| Semiconductor equipment components | Precision-machined parts, ion source components | We can provide ultra-high purity materials (≥99.95%), with strict control over impurity elements, meeting the requirements for cleanroom assembly. |
| High-temperature furnace thermal field | Heater, insulation screen, connectors | It exhibits excellent high-temperature strength and creep resistance, significantly extending the service life of hot-field components. |
| X-ray equipment | Electrodes, shielding devices, and collimator components | Its high density and high melting point effectively generate or contain X-rays, ensuring the stable operation of the equipment. |
Important Usage Restrictions and Precautions
To avoid issues regarding the application of tungsten, keep in mind the following material characteristics:
Brittleness: Due to poor ductility, design and assembly must be stress-free and impact-free.
Oxidation: In the presence of air and at operating temps higher than 350 °C, tungsten will rapidly oxidize. However, it can be used for long periods at temps over 2000 °C in a vacuum or inert gas.
Contamination: For applications that are ultra-clean (for example, in semiconductor manufacturing), special cleaning, double vacuum packaging, and reports on the measurement of particulate and impurity elements are included in the contamination control.
Machining: Fine machining should be done with diamond tools or grinding and by qualified personnel, and this is especially true for tungsten.
Manufacturing and Quality Assurance System
We understand the stringent requirements of industrial customers regarding material consistency, reliability, and traceability. Therefore, our quality assurance system goes beyond just process control; it is reflected in verifiable evidence and data for every batch of product.
Verification system
1. Comprehensive testing and verification capabilities
Before shipment, all products are tested and verified by our internal labs to meet the requirements of the order and the standards. The main testing parameters are:
Chemical composition: The main elements are verified by spectroscopic analysis, and trace elements (oxygen, nitrogen, hydrogen, and carbon) are determined by specialized tools, such as the fusion of inert gases.
Physical and mechanical properties: The density, hardness, and microstructure/grain size analysis.
Dimensions and surface: The geometric and surface finishing dimensions are verified with coordinate measuring machines, precise measuring tools, and surface roughness testers.
2. Quality Documentation for Traceability
Every shipment comes with a full set of quality documentation for your review and record-keeping.
Quality Certificate: Every Certificate of Analysis (COA) contains the following standard components: details of the supplier, description of the product, grade, specification, batch number, individual test results for each parameter, associated standard limits, test methodologies, and inspector’s signature.
Declaration of Conformity: Every Certificate of Conformity (COC) states that the product batch complies with the technical, standard, and legal requirements specified in the order.
3. Thorough Batch Traceability System
Using the furnace number/batch number, we can trace the history of every product both forwards and backwards. The traceability records consist of the following:
Source of Raw Material: Forwards and backwards identification of the suppliers, batches, and raw material inspection (e.g., tungsten powder) reports.
Key Process Records: Including records of sintering/forging temperature, machining, and heat treatment, etc.
Inspection and Release Records: Connected to all original inspection data and reports about that batch.
4. Specialized Controls for Semiconductor Applications
For applications that require high levels of purity and in semiconductor-related fields, we implement specific additional steps related to contamination control that go even beyond our standard procedures.
Processing in Clean Rooms: Final machining, cleaning, and inspection are completed in designated clean room areas to prevent contamination by unbounded particulates.
Packaging: To prevent both contamination and oxidation, vacuum packaging and packaging in dry, sealed nitrogen are performed in Class 100/1000 clean room bags, which are double vacuum sealed.
Reports: If asked, we can provide reports of particle counts from pre-packaging as well as test data regarding specific surface contaminants.
International Trade and Delivery Terms
1. Trade Terms
We offer flexible international trade terms to suit your different supply chain strategies:
EXW/FOB/CIF/DDP
Please specify your chosen terms in your inquiry or order, and we will provide an accurate quotation accordingly.
2. Lead Time and Minimum Order Quantity (MOQ)
Lead time and MOQ vary depending on the product type, specifications, and order quantity, aiming to provide you with maximum flexibility.
3. Packaging and Documentation Guarantee
We use professional packaging and provide complete documentation, controlling transportation risks throughout the entire process.
Professional Packaging: Based on the characteristics of the materials, we use anti-oxidation vacuum bags + desiccants + custom-made reinforced wooden crates to ensure safe long-distance sea/air transportation. Specified shipping marks can be printed upon request.
Our Factory
FAQ
We're professional pure tungsten suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy discount pure tungsten in stock here and get free sample from our factory. For price consultation, contact us.
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