Generally contains 25% kaolin, 45% quartz, and 30% feldspar, firing at lower temperatures.
Acts as a "flux," melting during firing to create a glassy matrix that bonds the other ingredients together, making the final piece non-porous (vitrified). Porcelain
Often reinforced with alumina or ball clay for extreme durability in commercial use. Generally contains 25% kaolin, 45% quartz, and 30%
Higher feldspar content (70–85%) mixed with quartz and a small amount of kaolin for aesthetic translucency. Generally contains 25% kaolin
The specific "recipe" or content for porcelain determines its final properties like whiteness, strength, and translucency.
The foundational ingredient. It provides structural integrity and maintains the white color at high temperatures.
Typically 50% kaolin, 25% quartz, and 25% feldspar.