MONEL alloy 506 is an intermediate cast nickel-copper alloy that has higher hardness than cast Monel alloy 410 and better machinability than Monel alloy 505. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as heat treating, machining, and joining. Filing Code: Ni-73. Producer or source: Huntington Alloy Products Division.