Classes of metals Classes of metals Class A metals are metals that form hard acids. Hard acids are acids with relatively ionic bonds. These metals, such as iron, aluminium, titanium, sodium, calcium and the lanthanides, would rather bond with fluorine than iodine. They form stable products with hard bases, which are bases with ionic bonds. They target molecules such as phospholipids, nucleic acids and ATP. Class B metals are metals that form soft acids. Soft acids are acids with relatively covalent bonds. These metals, such as lead, gold, palladium, platinum, mercury and rhodium, would rather bond with iodine than fluorine. They form stable
Metals Service Center Institute Metals Service Center Institute The Metals Service Center Institute (MSCI) is a trade association and nonprofit organization based in Rolling Meadows, Illinois, in the United States. It was established as the American Horseshoe and Heavy Hardware Association in 1909 and was subsequently known as the American Steel Warehouse Association, then the Steel Service Center Institute. The organization's members are primarily metal service centers that inventory and distribute metals for industrial customers and perform first-stage processing. MSCI has approximately 400 members operating from 1,500 locations primarily in North America. MSCI members purchase about 75 million tons of steel, aluminum and other