Hardness/YSZ PSZ Y-TZP Ceramic/Yttria Stabilized Zirconia Ceramic Tube/INNOVACERA Typically, ceramic screws are used in low-stress & high temperature conditions. These conditions are most commonly found in electronic equipment, where ceramic screws are particularly attractive due to their lack of electrical conductivity. Another benefit of ceramic screws over polymer based ones are that they have much higher and longer lasting performance due to their ability to withstand sustained heat cycling.