Brass melting point of brass (, depending on composition) and its flow characteristics make it a relatively easy material to cast. By varying the proportions of copper and zinc, the properties of the brass can be changed, allowing hard and soft brasses. The density of brass is . Today, almost 90% of all brass alloys are recycled. Because brass is not ferromagnetic, it can be separated from ferrous scrap by passing the scrap near a powerful magnet. Brass scrap is collected and transported to the foundry where it is melted and recast into billets. Billets are heated and extruded into the
Industrial metal were initially influenced by the Earache roster (namely Godflesh, Napalm Death and Bolt Thrower). The German band Oomph! after their second album Sperm started to play industrial metal combined with elements of death metal and groove metal until the album Plastik. Sepultura singer Max Cavalera's Nailbomb, a collaboration with Alex Newport, also practiced a combination of extreme metal and industrial production techniques. A lesser-known example of industrial death metal is Meathook Seed, made up of members of Napalm Death and the Florida death metal group Obituary. An industrial music fan, Obituary guitarist Trevor Peres suggested drum machines for "The End