Hidurax 7 is a nickel and silicon hardened bronze grade with tensile properties slightly lower than Hidurax 1 (see Alloy Digest Cu-740, February 2006). The alloy has high impact properties and low magnetic permeability. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, machining, and joining. Filing Code: CU-741. Producer or source: Langley Alloys.