Tungsten

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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 28

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 31

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 27

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 37

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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Tungsten Alloy 25

As an important product of the inorganic metal tungsten, tungsten alloy has an extremely wide range of applications, including electronics, automotive, defense, military, aerospace, aviation, maritime, optoelectronics, and medical fields. 1. Definition Tungsten alloy, also known as tungsten-based alloy, high-density alloy, or high-specific-gravity alloy (Tungsten Alloy in English), is an alloy with tungsten as the hard phase and elements such as nickel, iron, copper, cobalt, or molybdenum as the binding phase. Generally, the tungsten content ranges from 85% to 99%.…

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Unlocking the Performance Secrets of Tungsten-Nickel-Iron Alloy 34

In the vast starry sky of modern industry, tungsten-nickel-iron alloy shines like a brilliant star, occupying a pivotal position in numerous critical fields due to its excellent mechanical, chemical, and thermal properties. From precision components in aerospace to core equipment in defense and military applications, from high-end medical instruments to tools in industrial manufacturing, its presence is ubiquitous. This alloy is not a mere amalgamation of individual elements but a sophisticated material born from the synergistic interplay of tungsten, nickel,…

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Impurity Elements in Tungsten-Nickel-Iron Alloy 28

Tungsten-nickel-iron alloy, a crucial tungsten-based alloy, uses tungsten as its matrix, with tungsten content typically ranging from 90% to 98%, forming the alloy’s foundational structure. Nickel and iron, as primary additive elements, play critical roles, with common nickel-to-iron ratios of 7:3 or 1:1. Tungsten-nickel-iron alloy boasts numerous remarkable properties. Its high density, ranging from 16.5 to 18.75 g/cm3, makes it ideal for applications requiring high-density materials. Additionally, it exhibits high strength, with tensile strength reaching 900-1000 MPa, enabling it to…

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Applications of Tungsten Wire 41

The high strength, high temperature resistance, corrosion resistance and electrical and thermal conductivity of tungsten wire make it irreplaceable in scenarios that require high reliability and durability. The following is an introduction to its main applications: 1. Lighting Industry: Tungsten wire is mainly used for the filament of incandescent bulbs. Due to its high melting point (about 3422°C) and high temperature resistance, it can emit light for a long time at high temperature without melting. In some fluorescent lamps or…

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