What is the difference between black and gray fiberglass tissue?

Black and gray fiberglass tissue differ primarily in their color and the raw materials used. Black fiberglass tissue is made from basalt fibers, which are known for their high tensile strength, heat resistance, and chemical stability. It is often used in high-temperature applications and for reinforcing materials. Gray fiberglass, on the other hand, is made from E-glass fibers and is characterized by its good electrical insulation properties and resistance to water and most chemicals. It is commonly used in electrical insulation, construction, and automotive applications. The choice between black and gray fiberglass tissue depends on the specific requirements of the application, such as temperature resistance, strength, and environmental factors.