The thermal properties of tungsten-nickel-iron alloy are important considerations for its application in high-temperature environments, mainly including melting point, thermal stability, thermal expansion coefficient and thermal conductivity. These properties are interrelated and jointly determine the performance of the alloy under different temperature conditions. Due to the high proportion of tungsten in the alloy, and tungsten is one of the metals with the highest melting point (3422℃), the melting point of tungsten-nickel-iron alloy is also relatively high, usually between 1400 – 1600℃. The specific value will fluctuate slightly depending on the content of nickel and iron. The higher the content of nickel and iron, the lower the melting point relatively, but it is still much higher than many common metal materials, which enables it to maintain structural stability in higher temperature environments.
In terms of thermal stability, tungsten-nickel-iron alloy is not easy to oxidize, decompose or undergo phase transformation under long-term high-temperature action, and can maintain its original mechanical properties and structural integrity. This is due to the high-temperature resistance of tungsten and the stable combination between the nickel-iron binding phase and tungsten particles. Even in repeated temperature changes, the alloy is not easy to crack or deform, making it suitable for components that need to work in high-temperature conditions for a long time.
The thermal expansion coefficient is an indicator to measure the degree of thermal expansion of materials. The thermal expansion coefficient of tungsten-nickel-iron alloy is relatively low, generally in the range of 4 – 6×10⁻⁶/℃. A lower thermal expansion coefficient means that its volume changes little when the temperature changes, which is crucial for precision components requiring dimensional stability. For example, in high-temperature structures of aerospace equipment, it can reduce the change of component fit clearance caused by temperature fluctuations.
In terms of thermal conductivity, tungsten-nickel-iron alloy has a certain thermal conductivity, and its thermal conductivity is usually between 50 – 80 W/(m·K). Good thermal conductivity can help the alloy dissipate heat in time during work, avoiding excessive local temperature affecting performance, which plays a positive role in some scenarios requiring rapid heat dissipation, such as heat dissipation components of electronic equipment.
The comprehensive performance of these thermal properties enables tungsten-nickel-iron alloy to adapt to various environments from normal temperature to higher temperature, and is widely used in high-temperature components in aerospace, military, nuclear industry and other fields. By optimizing the composition ratio and preparation process, its thermal properties can also be adjusted to a certain extent to meet the specific needs of different scenarios.
The WeChat public account “China Tungsten Online” updates the prices of various tungstates such as tungstates such as tungstate powder, ammonium tungstate, tungsten products, high-density tungsten alloys, cemented carbides, tungsten concentrates, etc. on a daily basis. At the same time, it provides the most professional WeChat group in the industry for everyone to exchange supply and demand information, and you can exchange information about tungsten powder at any time. Follow “China Tungsten Online” and join the China Tungsten Online WeChat exchange group. Daily tungsten product prices and supply and demand information will be delivered in a timely manner, and real-time communication will be carried out. For more tungsten product market trends, products and information, please follow the “China Tungsten Online” WeChat public account, or visit news.chinatungsten.com to obtain daily updated information.
Contact information: sales@chinatungsten.com
Tel: +86 592 5129696 / 86 592 5129595
Scan the QR code to follow the “China Tungsten Online” WeChat public account and get real-time updated tungsten, molybdenum and rare earth product market prices and information for free every morning.
