PERMANICKEL alloy 300 is an age-hardenable high-nickel alloy similar to DURANICKEL alloy 301 in its strength and corrosion resistance, but having higher thermal and electrical conductivity. The alloy is somewhat difficult to heat treat, and DURANICKEL alloy 301 is recommended in preference to it except for applications requiring its superior conductivity or magnetic properties. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-126. Producer or source: The International Nickel Company Inc..