In easy words, the break strength of a tile is a numerical representation that tells the amount of weight the tile can support. There are different machines that manufacturing companies are making to test different features of the tile. One of the machines is MOR testing machine. MOR or Modulus of rupture testing machine is used by experts to determine the breaking strength of the tile. The break strength is calculated in a lab setting by professionals. Understanding what this number reveals will help you determine the tile strength and for what purpose you can use the tile.