Used as an alloying agent in steel production to improve strength, toughness, and wear resistance. Essential in aluminum alloys for corrosion resistance, especially in beverage cans. Employed in dry-cell batteries as a cathode material. Plays a key role in the production of fertilizers and animal feed as a micronutrient. Utilized in water treatment to remove iron and hydrogen sulfide. Also used in pigments for ceramics and glass, and as a catalyst in chemical processes.