Abdulaziz Albannai Joo Choi Hello, TiBAl is a Aluminum grain refiner which is added 0.2% of the total Al alloy melt quantity to achieve the desired % of Ti and B for grain refinement of the grains within the required size. Addition levels vary widely between approximately 0.25 to 3.0 kg/mt. A tyoical addition level in DC casting is 1kg/mt. On strip casters addition levels are typically 1 to 3 kg/mt.