why didn’t Iron Man use vibranium for his suits is it because vibranium was too expensive for Tony Stark or did Black Panther refuse to sell it to him the answer is simple Tony’s Visionary mindset always aimed for continuous Improvement in Iron Man 1 he discovered that alloy steel caused Icing at high altitudes so he quickly switched to a gold titanium alloy in Captain America Civil War Ant-Man caused his suit’s weapon systems to fail and during his fight with Captain America and the Winter Sold