Purity 99.95% Tungsten Wire

Tungsten wire including stranded gold plated/rhenium/black/cleanded tungsten wire.

Grade: W1Size: 0.05mm~2.00mm

Density: Purity 99.95% minQuality

Standard: ASTM B760-86

State: in coil or straight;

Color: black wire and white wire.

Tungsten wire with 99.95% purity is a high-purity metal wire, primarily composed of tungsten, with a tungsten content of 99.95%. Tungsten is a chemical element possessing many unique physical and chemical properties. It has the highest melting point of all metals, approximately 3,422°C, and an extremely high density of about 19.3 g/cm³, comparable to uranium and gold. Additionally, tungsten exhibits very low vapor pressure at high temperatures, a small thermal expansion coefficient, and excellent electrical and thermal conductivity. Its electrical conductivity is about 30% that of copper, while its thermal conductivity is approximately 43% that of copper.

W-wire is regular black covered with graphite. After graphite is removed it is metallic luster.

Raw Material Preparation: Extract tungsten powder from high-purity tungsten ore, ensuring a purity level of 99.95% or higher.

Powder Compaction: Mix the tungsten powder with a small amount of binder and press it into a compact shape to form a tungsten billet with sufficient strength.

Sintering: Sinter the tungsten billet at high temperatures (2000-2500°C) to achieve densification.

Wire Drawing: Gradually draw the tungsten billet into the desired wire diameter through multiple drawing processes, with intermediate annealing steps to relieve internal stresses.

Heat Treatment: Perform final annealing on the drawn tungsten wire to ensure optimal mechanical properties and dimensional stability.

Quality Inspection: Test the wire for dimensions, surface quality, and performance to verify compliance with standards.

Packaging & Storage: Package qualified tungsten wire in vacuum or inert gas and store it in a dry, clean environment.

Excellent High-Temperature Performance: Due to tungsten's high melting point and low vapor pressure, 99.95% pure tungsten wire performs exceptionally well in high-temperature environments, maintaining structural stability under extreme heat and demonstrating outstanding thermal stability in non-oxidizing atmospheres.

High Strength and Toughness: Tungsten wire exhibits extremely high tensile strength and retains considerable strength even at elevated temperatures, making it highly reliable for applications requiring resistance to high stress.

Superior Dimensional Consistency: Tungsten wire features excellent diameter uniformity and minimal weight variation, meeting the demands of high-precision machining and applications.

Excellent Surface Quality: The wire has a smooth surface, free from cracks, burrs, fissures, pits, spots, or oil contamination, enhancing its performance and lifespan in various applications.

Strong Corrosion Resistance: At room temperature, tungsten is highly resistant to corrosion from air and water, with only slow erosion occurring under extreme conditions such as exposure to strong acids or alkalis.

Lighting Applications: Tungsten wire is widely used as filaments in incandescent and halogen lamps. Its high melting point and excellent thermal stability allow it to emit light stably at high temperatures, delivering bright and long-lasting illumination.

Electronics Industry: In electronic device manufacturing, tungsten wire is used for wire bonding in semiconductor devices and integrated circuits, ensuring reliable electrical connections within chips. Additionally, it is employed in vacuum tubes, field-emission displays, and other electronic components to enhance overall performance and service life.

High-Temperature Heating Elements: Tungsten wire is commonly used in industrial electric furnaces and laboratory heating equipment. In processes such as metal forging and annealing, tungsten heating elements maintain structural integrity under extreme temperatures.

Vacuum Metallurgy: In vacuum metallurgy, tungsten wire serves as a critical material for electron beam welding and electron beam melting, enabling high-precision welding in aerospace and automotive components. It is also used in vacuum evaporation technology for depositing thin films and specialized coatings in the electronics and optics industries.

Medical Devices: In medical imaging, tungsten wire is utilized in X-ray tubes and CT scanner anode wires. Its high atomic number facilitates efficient X-ray generation, producing clear and accurate diagnostic images.

Aerospace & Defense: The aerospace sector leverages tungsten wire's high strength, density, and heat resistance for jet engine components and high-performance aviation systems. In defense applications, it is used in missile guidance systems and electronic warfare equipment to improve precision and anti-jamming capabilities. Furthermore, tungsten's high density makes it ideal for counterweights and ballast in various defense applications.

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