In addition to being old news, this story isn't all that exciting. They've made an Aluminium-based steel that's 13% lighter than ordinary steel(density of about

In addition to being old news, this story isn't all that exciting. They've made an Aluminium-based steel that's 13% lighter than ordinary steel(density of about 6.83 vs. 7.85) and that isn't brittle like previous Aluminium steels. It could have interesting uses, especially if it can be made cheap and with good properties (weldability, formability, workability, corrosion resistance), but they're just at the small-scale stage and they have a corrosion resistance problem to solve.