How much physical pressure can bata alumina inggil withstand?

Wis kondhang bata alumina inggil are divided into three grades according to the content of aluminum Al2O3. The compressive strength of the first grade high alumina brick is 55MPa at room temperature, the compressive strength of the second grade high alumina brick is 50MPa, and the compressive strength of the third grade high alumina brick is 45MPa, 1MPa. It is equivalent to 10 kilograms.