The porcelain used in tiles is typically a fine-grained, white ceramic material known for its high strength, durability, and resistance to stains and chemicals. Porcelain tiles are widely used in the United States due to their superior quality and aesthetic appeal. According to the American Ceramic Society, porcelain tiles account for approximately 60% of the total tile market in the U.S. This popularity is attributed to several factors.

Firstly, porcelain tiles are highly durable and can withstand heavy foot traffic, making them ideal for both residential and commercial settings. Their dense composition prevents water absorption, which reduces the risk of mold and mildew growth. This feature is particularly important in areas with high humidity, such as bathrooms and kitchens. Additionally, porcelain tiles are resistant to scratches and chips, ensuring a long-lasting finish.

Secondly, porcelain tiles offer a wide range of design options. They come in various colors, patterns, and finishes, allowing homeowners and designers to create unique and personalized spaces. The ability to mimic natural stone, wood, and other materials makes porcelain tiles a versatile choice for any project.

Data from the Tile Council of North America (TCNA) reveals that porcelain tiles have a water absorption rate of less than 0.5%, which is the standard for porcelain tile classification. This low absorption rate contributes to the tiles' durability and makes them suitable for outdoor applications as well. Furthermore, porcelain tiles are easy to maintain, requiring only a simple cleaning routine to keep them looking new.

In conclusion, porcelain is the preferred material for tiles in the United States due to its exceptional durability, design versatility, and ease of maintenance. The high demand for porcelain tiles in the U.S. tile market is a testament to their superior quality and functionality.