Tungsten

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What Is Silver Tungsten Contact? 32

Tungsten contacts are a type of electrical contact material, with their primary chemical composition including the refractory metal tungsten along with copper, silver, and other metal elements. They exhibit excellent thermal, mechanical, and electrical properties, making them widely used in the power sector. Depending on their chemical composition, tungsten contacts can be classified into tungsten-copper (WCu) contacts and Silver Tungsten (AgW) contacts. Silver Tungsten contact is materials formed by combining silver and tungsten, characterized by a structure where tungsten serves…

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What Is Tungsten Alloy Rod? 24

Tungsten-based alloys can be categorized into different types—tungsten alloy rods, tungsten alloy blocks, tungsten alloy plates, and tungsten alloy spheres—based on their external shapes. These alloys share similar physical and chemical properties but differ in their specific applications. Tungsten alloy rods, also known as tungsten bars, are alloy products made with refractory metal tungsten as the hard phase, supplemented by metal elements such as cobalt, nickel, iron, and copper as binding phases. Leveraging their excellent physicochemical properties, they are widely…

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Tungsten Alloy Rod 26

Depending on their shapes, tungsten-based alloys can be categorized into tungsten alloy rods, tungsten alloy blocks, tungsten alloy plates, and tungsten alloy spheres. While their physicochemical properties are generally similar, their applications differ. Taking tungsten alloy rods as an example, also referred to as tungsten bars, they are alloy products with refractory metal tungsten as the hard phase and metals such as cobalt, nickel, iron, or copper as the binding phase, known in English as tungsten bar. In terms of…

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Tungsten-Copper Contact 33

Like tungsten-silver (WAg) contacts, tungsten-copper (WCu) contacts are also a typical type of tungsten contact. Since both tungsten-silver and tungsten-copper contacts are products based on refractory metal tungsten, their physicochemical properties, production methods, and applications are fundamentally similar. It should be noted that the price of silver is generally higher than that of copper. Taking tungsten-copper contacts as an example, they are electrical contacts primarily composed of tungsten with copper as an auxiliary material, forming a pseudo-alloy product made of…

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Silver-Tungsten Contact 26

Tungsten contacts are electrical contact materials primarily composed of refractory metal tungsten and other metal elements such as copper or silver, exhibiting excellent thermal, mechanical, and electrical properties, and are widely used in the power sector. Based on their chemical composition, they can be classified into tungsten-copper (WCu) contacts and silver-tungsten (AgW) contacts. Conceptually, AgW contacts are materials composed of silver and tungsten, forming a two-phase pseudo-alloy with tungsten as the hard phase and silver as the binding phase, known…

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Applications of High-Density Tungsten Alloy in the Automotive Field 27

In today’s rapidly developing automotive industry, material innovation and application have been key drivers of progress. From traditional steel to the later emergence of aluminum alloys and carbon fiber, each introduction of a new material has brought a qualitative leap in automotive performance. Beyond aluminum alloys and carbon fiber, high-density tungsten alloy is also a critical material in the automotive sector. While it may still seem unfamiliar to the general public, in the eyes of engineers, tungsten alloy is becoming…

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Applications of High-Density Tungsten Alloy in the Medical Field 29

High-Density Tungsten Alloy, also known as “high-specific-gravity tungsten alloy,” is an alloy primarily composed of tungsten (with a tungsten content of 85–99%) and small amounts of elements such as nickel (Ni), copper (Cu), cobalt (Co), molybdenum (Mo), and chromium (Cr). Its density ranges from 16.5–18.75 g/cm3, more than twice that of steel (approximately 7.85 g/cm3). Depending on the alloy composition, it can be classified into series such as W-Ni-Fe (tungsten-nickel-iron), W-Ni-Cu (tungsten-nickel-copper), W-Cu (tungsten-copper), and W-Ag (tungsten-silver). In addition to…

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Applications of Tungsten-Nickel-Iron Alloy in Welding Electrodes 30

Tungsten-nickel-iron alloy, with its unique physical and mechanical properties, demonstrates significant applications value in the field of welding electrodes. When used to manufacture welding electrodes, the high tungsten content (typically over 90%) is the core source of its advantages. Tungsten’s melting point, as high as 3422°C, far exceeds that of most metal materials, enabling the electrode to maintain a stable form in the high-temperature arc environment and preventing excessive wear due to melting. This is crucial for ensuring the continuity…

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Applications of Tungsten-Nickel-Iron Alloy in the Medical Field 26

The applications of tungsten-nickel-iron alloy as a shielding material in the medical field stems from its unique physical properties, such as high density, good chemical stability, and excellent radiation shielding capabilities. With a density typically ranging from 16.5 to 18.75 g/cm3, its ability to attenuate X-rays, γ-rays, and other radiation is comparable to traditional lead shielding materials. Moreover, it is less prone to fracturing or deforming due to impacts or vibrations, giving it a clear advantage in medical radiation protection…

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Impact of Carbon on the Hardness of Tungsten-Nickel-Iron Alloy 36

Carbon plays a critical role in regulating the microstructure and mechanical properties of tungsten-nickel-iron alloys, with its influence on alloy hardness primarily achieved through altering the microstructure, forming carbides, and modulating interface bonding states. From a microstructural perspective, tungsten-nickel-iron alloys are primarily composed of tungsten particles and a nickel-iron binding phase, with carbon preferentially reacting with tungsten or other metal elements. At low carbon levels, carbon dissolves interstitially in the nickel-iron binding phase, leading to solid solution strengthening that enhances…

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