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Tungsten is a metal known for its exceptional properties. It has the highest melting point (3422°C), lowest vapor pressure, and highest tensile strength among all metals. It also has a very high density (19.3g/cc), and a high degree of mechanical strength and ductility. These qualities make it a great option for applications that need to withstand high temperatures, remain stable in shape, and have strong mechanical strength.

AEM Metal is an professional tungsten supplier, we provide a variety of tungsten products, including pure tungsten metals, tungsten heavy alloys, tungsten copper, tungsten silver, and tungsten carbide. Our products are of high quality and competitively priced. If you need custom products, feel free to reach out to us.

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The Standards of Tungsten Products

ASTM B760/B760M - Standard Specification for Tungsten Plate, Sheet, and Foil
ASTM B777 - Standard Specification for Tungsten Base, High-Density Metal
ASTM B708 - Standard Specification for Tungsten-Rhenium Alloy Plate, Sheet, and Foil
ASTM B521 - Standard Specification for Tungsten and Tungsten Alloy Wire

Global Tungsten Resource Reserves

Source: USGS

Tungsten is a rare metal, but it is China's dominant resource species. According to statistics from the United States Geological Survey (USGS), the world's proven tungsten metal resource reserves total 3.8 million tons, of which 1.8 million tons are distributed in China, accounting for about half of the world's total reserves. China's tungsten metal exports account for a larger proportion. In 2022, the world produced a total of about 84,000 tons of tungsten, of which 71,000 tons were produced in China, accounting for about 85%. Therefore, it can be said that the global tungsten metal is mainly dominated by China.

Physical Properties of 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

Mechanical Properties of Tungsten

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

Producing Tungsten Based on Powder Metallurgy

W Powder

Mixing Alloys

Pressing

Sintering

Forming

Heat Treatment

Mechanical Processing

Quality Assurance

W Powder: AEM Metal produces and sells high-purity tungsten powder. We use 2-8 um tungsten powder to manufacture pure tungsten products, and we use 2.5-3.5 tungsten powder to manufacture tungsten alloy products.

Mixing Alloys: AEM Metal could manufacture WNiFe, WNiCu, WRe, AgW, WMo and cemented Tungsten Carbide.

Pressing: We compress our metal powder and metal powder mixtures into a so-called green compact. For final products with especially difficult geometries, we then press the green compact into the corresponding final shape.

Sintering: Sintering is the key technological step in powder metallurgy. The green compact is heated in a sintering furnace in a protective gas atmosphere. This makes the powder grains coalesce, resulting in a sinter block with a low porosity.

Forming: We form the sinter blocks into a highly durable semi-finished product. The density and mechanical strength of our materials increase with an increasing degree of forming.

Heat Treatment: Using heat treatment, we balance out the mechanical stress, influence the material properties as well as ensure that the metals are easy to process later on.

Mechanical Processing: AEM Metal could provide turning, milling, grinding, cutting, joining and coating processing steps.

Quality Assurance: AEM Metal provide Quality Certification per each order.

Applications of Tungsten

Electronics & Electrical Devices

Tungsten is used in the production of electronic components, such as filaments in light bulbs and cathodes in vacuum tubes.

Tungsten alloys are used in the manufacturing of contacts and electrodes for electrical switches and relays.

Mining & Drilling

Tungsten carbide, a compound of tungsten and carbon, is widely used in the mining and drilling industries for cutting tools, drill bits, and other wear-resistant applications.

Aerospace & Defense

Tungsten alloys are employed in the aerospace industry for the production of high-performance components like rocket nozzles, balance weights, and rotor blades.

Tungsten is used in the defense industry for armor-penetrating projectiles and as a component in various military applications.

Automotive Industry

Tungsten carbide is used in the production of hard-wearing components for the automotive industry, including cutting tools and wear-resistant parts.

Manufacturing & Metalworking

Tungsten and tungsten alloys are used in the production of high-speed tools, such as cutting tools, milling cutters, and drills.

Tungsten is used as a material for resistance welding electrodes.

Medical Devices

Tungsten is used in medical applications for X-ray tubes, radiation shielding, and collimators. Tungsten alloys are used in radiation therapy for cancer treatment due to their high density and radiation-absorbing properties.

Nuclear Applications

TTungsten is used in nuclear reactors and as a radiation shield due to its high density and ability to absorb radiation.

Tungsten alloys are used in the production of collimators and shielding materials for nuclear medicine.

Electrodes and Arc Welding

Tungsten electrodes are commonly used in gas tungsten arc welding (GTAW or TIG welding) for their high melting point and stability at high temperatures.

Sporting Goods

Tungsten alloys are used in the production of darts, golf club heads, and fishing weights due to their high density and small size.

Jewelry and Fashion Accessories

Tungsten carbide is used in the jewelry industry to create durable and scratch-resistant rings and other accessories.

Photovoltaic

Photovoltaic silicon wafers will develop in the direction of "large size" and "thin wafer" in the future. Under the trend of "thinnerization", "fine wire and high speed" are the main development trends of diamond wire. Tungsten wire has the advantages of large thin wire space, high tensile strength, strong breaking force, good toughness, fatigue resistance and corrosion resistance. It will gradually replace high carbon steel wire and become a new generation of diamond cutting wire busbar.

Your Comprehensive Guide to Purchasing Tungsten

Define Your Requirements

Material Form: Determine the form of tungsten you need (e.g., bars, sheets, rods, wires, powder). Purity: Specify the required purity level (e.g., 99.95%, 99.99%) based on your application.
Understand Tungsten Grades

Familiarize yourself with different tungsten grades, such as pure tungsten (W) and tungsten alloys (e.g., WNiFe, WNiCu, WRe, WMo, WCu, AgW, WC).
Application Considerations

Consider the specific application requirements (e.g., high-temperature stability, radiation shielding, electrical conductivity) to choose the most suitable tungsten form and grade.
Quality Standards

Ensure that the tungsten meets relevant quality standards, such as ASTM specifications for tungsten and tungsten alloys.
Research Suppliers

Identify reputable tungsten suppliers or manufacturers. Check supplier certifications, quality control processes, and industry reputation.
Request for Quotations (RFQ)

Prepare a detailed RFQ outlining your requirements, including quantity, specifications, delivery timeline, and any specific quality standards.
Evaluate Quotations

Evaluate received quotations based on factors such as price, lead time, and supplier reputation. Pay attention to any additional services offered by the supplier (e.g., custom machining)
Material Testing and Certification

Request information on material testing and certifications to ensure compliance with specified standards.
Supplier Communication

Engage in open communication with potential suppliers to clarify any queries and ensure mutual understanding of requirements.Email, call, Whatsapp, Wechat, LinkedIn, skype
Customization

If your application requires specific modifications (e.g., custom shapes, sizes), prepare the the drawings first.
Shipping and Logistics

Confirm shipping terms, logistics, and packaging methods with the supplier.
Be aware of any import/export regulations and customs requirements.
Payment Terms

Agree on payment terms and conditions with the supplier.
Ensure transparency in pricing and any additional costs.
Supplier Reliability

Assess the supplier's reliability, on-time delivery track record, and responsiveness to queries.
Review Contracts

Review and formalize contracts, including specifications, quality standards, delivery terms, and payment conditions.
Continuous Communication

Maintain ongoing communication with the supplier to address any issues promptly and ensure a smooth procurement process.
Quality Inspection upon Receipt

Conduct quality inspections upon receiving the tungsten to verify compliance with specifications and standards.
Documentation

Keep thorough documentation of the procurement process, including contracts, certificates, and inspection reports.
Feedback and Continuous Improvement

Provide feedback to the supplier based on your experience.
Use the feedback to improve the procurement process for future purchases.

By following these steps, you can enhance the likelihood of a successful tungsten procurement process that aligns with your specific application needs.

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