Australian steelmaker Bisalloy shares have risen some 40% since December 2023, powered by defence deals signed as part of the AUKUS nuclear submarine deal between Australia, Britain and the United States.Defence contractors large and small are looking at the $237 billion plan to build Australia a fleet of nuclear-powered submarines as a decades-long source of work. Australia will build the vessels to a British design with U.S. technology.Bisalloy said earlier this month it had signed a deal to sell a shipment of steel to part of U.S. shipbuilder Huntington Ingalls Industries, maker of the U.S.