Crystal structure "white tin" respectively. Two more allotropes, γ and σ, exist at temperatures above 161 °C and pressures above several GPa. White tin is metallic, and is the stable crystalline form at or above room temperature. Below 13.2 °C, tin exists in the gray form, which has a diamond cubic crystal structure, similar to diamond, silicon or germanium. Gray tin has no metallic properties at all, is a dull gray powdery material, and has few uses, other than a few specialized semiconductor applications. Although the α–β transformation temperature of tin is nominally 13.2 °C, impurities (e.g. Al, Zn, etc.) lower the
Ballad of a Tin Man Man" was published in the United States by Post Hill Press on September 12, 2017(). John D. Kuhns is an author, artist, businessman and investment banker, known for renewable and alternative energy investments around the world. Ballad of a Tin Man Ballad of a Tin Man is a 2017 novel by John D. Kuhns. The book is based on actual events which took place during Kuhns’ career during the late 1980s. The book finds Jack Davis, the protagonist in this novel as well as Kuhns’s earlier novel China Fortunes, down-and-out. His investment banking business is going nowhere, and his girlfriend