These are some notes I copied from information we got at the Hoba site.
The Hoba consists of 82.4% iron, 16.2% nickel and the rest Cobalt and other elements. It weighs 60 tons and it hit Namibia 80,000 years ago. Its thickness varies between 122 and 75 cm so its actually pretty small. The shallow pits and depressions on the horizontal upper surface of the meteorite are typical of high temperature meteorite corrosion during the passage through the earths atmosphere. Minor oxidation has occurred on the surface.