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 collaborations with and remixes from industrial metal musicians. When industrial metal climbed the charts of the late 1990s, its sudden popularity was met with negative reactions from the early innovators of industrial music. Peter Christopherson told "The Wire" that he no longer felt any kinship with the industrial scene: "this is not me, this is not what I'm about". Lustmord, a prominent early industrial musician, declared that "Ministry just doesn't interest [him]" and "[he has] no time for all this rock and roll shit they're doing now." Skinny Puppy frontman Nivek Ogre dismissed Nine Inch Nails as "cock rock" but