# What Is The Temperature Of Superconductors?

Until the point where the superconductor undergoes decomposition, it can have any temperature. However, it is important to note that the superconducting material will only display superconductivity at a temperature below its critical temperature. Many metallic elements have the ability to display superconductivity (but they only superconduct at extremely low temperatures). For example, lead (Pb) becomes a superconductor when cooled to temperatures below 4 Kelvin.
Conventional superconductors typically have critical temperatures ranging up to 25 Kelvin. The relatively high-temperature cuprate superconductors are known to exhibit superconductivity at temperatures above 77 Kelvin (which is the temperature of liquid nitrogen). Typically, the temperature at which a superconductor exhibits superconductivity is below 10 Kelvin. The superconducting temperature varies from material to material (since different elements/alloys exhibit superconductivity at different temperatures). Hydrogen sulphide (chemical formula: H2S), when put under over 150 gigapascals of pressure, is a high-temperature superconductor whose transition temperature is approximately 80 Kelvin.