Kubota alloy KHRSA is very highly alloyed to produce some of the best strength and oxidation resistance of any of the heat-resisting casting grades. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep and fatigue. It also includes information on high temperature performance. Filing Code: Ni-623. Producer or source: Kubota Metal Corporation, Fahramet Division.