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What Is The Thermal Conductivity Of Rock Wool?

Dec 19, 2025

The thermal conductivity of rock wool varies depending on density and other factors. Common rock wool thermal conductivity ranges are usually between 0.03 and 0.05 W/(m·K). The specific thermal conductivity value may vary depending on the manufacturing process of the rock wool, density, fiber length and other factors.

In practical applications, the thermal conductivity of rock wool can be determined by relevant test methods. These test methods include steady-state thermal conductivity tests and non-steady-state thermal conductivity tests. Through these tests, the thermal conductivity of rock wool can be accurately evaluated and determined to be suitable for specific thermal insulation applications.

In summary, the thermal conductivity of rock wool is usually between 0.03 and 0.05 W/(m·K), but the specific value may vary depending on factors such as the manufacturing process and density of the rock wool.

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