C12 High Density plates currently include 3 mol% Yttria Stabilized Zirconia (3YSZ) plates. C12 Flexible 3YSZ Zirconia Substrates are ideally suited for electronics and applications that require strong, thin ceramic membranes. 3YSZ plates are characterized by their excellent flexibility, very high bending strength, and high fracture toughness. Flexible 3YSZ Zirconia Substrates are an excellent choice for thin and thickfilm processes or curved fittings.