materjali sitke purunemise tulemusena moodustunud hall amorfne murdepind, kui metall on piisavalt sitke, põhjustamaks kristallide pikenemist enne purunemist (vrd teraline murd, siidjas murd; vastand: habras murd), a gray and amorphous fracture that results when metal is sufficiently ductile for the crystals to elongate before fracture occurs (opposite: crystalline fracture; compare: granular fracture, silky fracture)