Why anode of x ray tube made of tungsten?

The anode of an X-ray tube is made of tungsten primarily because of its high atomic number, which enhances X-ray production efficiency through increased photon emission. Tungsten also has a high melting point (about 3,422 °C), allowing it to withstand the intense heat generated during the X-ray production process without deforming or melting. Additionally, tungsten's Excellent thermal conductivity helps dissipate heat, further ensuring the longevity and performance of the X-ray tube.