The phrase "strongest metal" refers to a type of metal that is very difficult to break or bend. It means that the metal has a high level of strength and can withstand a lot of force or pressure without getting damaged. Full definition
That would mean a slightly thicker body, smaller bezels, and stronger metal on the sides. (sammobile.com)
Weight storage and capacity: The best power racks and squat racks are made of strong metals that provide the perfect mix of strength and stability. (aimworkout.com)
The materials vary slightly, but they're all really strong metals. (geekwrapped.com)