Which property would be a crucial consideration for materials used in high-temperature applications?

In high-temperature applications, thermal resistance is a critical property because it determines how well a material can withstand and insulate against high temperatures without degrading or losing its structural integrity. Materials that exhibit high thermal resistance can endure extreme heat without melting, deforming, or undergoing chemical changes, which is essential for safety and performance in environments such as aerospace, automotive, and industrial applications.

For instance, materials like ceramics and certain metals are often selected for their ability to maintain strength and stability when exposed to elevated temperatures. This property also helps prevent heat transfer, making thermal resistant materials essential for energy efficiency and protecting sensitive components from overheating.

While other properties like flexibility, density, and corrosiveness may be important in different contexts, they do not directly pertain to a material's ability to endure and perform in high-temperature environments as thermal resistance does.