As a materials science expert with a focus on metallurgy, I can tell you that the title of the strongest and lightest metal can be attributed to Magnesium. Magnesium is a lightweight metal with a density of only 1.74 g/cm³, which is about two-thirds that of aluminum. It is also known for its high strength-to-weight ratio, making it an ideal material for applications where weight is a critical factor, such as in the aerospace and automotive industries.

In addition to its strength and lightness, magnesium has other beneficial properties. It is also quite ductile and can be easily machined into various shapes. It has a high resistance to corrosion and is also biocompatible, which makes it useful in medical applications.

However, it's important to note that magnesium is not the strongest metal in terms of absolute strength. There are other metals and metal alloys, such as steel and titanium, that can have higher tensile strength. But when considering the combination of strength and lightness, magnesium stands out.

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New Magnesium based alloy as World's strongest and lightest metal to change the world. Researchers from North Carolina State University have developed a material using magnesium which is light like aluminum, but as strong as titanium alloys. This material has the highest strength-to-weight ratio known to mankind.read more >>