Titanium
1090 is not by any means the hardest metal or even the hardest steel. 1090 is very ductile, and in the normalized, quenched and tempered state, has a very high modulus of elasticity. This alloy is primarily used for springs.  The fifth strongest metal is an alloy called inconel, which is mostly nickel, but has large amounts of chromium and iron as well, and smaller amounts of niobium, molybdenum, titanium, and aluminum. The tensile strength of a material is the amount of pulling force that can be applied before it weakens and breaks. If something were suspended from a wire, the amount of weight that could be suspended before the wire snapped would be the wire's tensile strength. The two types of strengths don't always go hand in hand Best Answer: Titanium is NOT the strongest metal. It is often thought of as the strongest but actually it has one of the highest strength to weight ratios. I.e., for a metal that is so light-weight, it is extremely strong. Typically it has a ultimate tensile strength of up to 170,000 psi. The question is: What is the strongest metal known to man. The answer could be: Titanium for best strength to weight ratio. Certain steel types if weight is not an issue. Tungsten for all around workable metal. Carbon is NOT metal! Graphene is NOT metal. It is important to know which metals are stronger, so that the most appropriate metal is used for a given job. Strength is especially important when metals are used for tools, construction and transportation. The tensile strength of a material is the amount of pulling force that can be applied before it weakens and breaks. If something were suspended from a wire, the amount of weight that could be suspended before the wire snapped would be the wire's tensile strength. The two types of strengths don't always go hand in hand Carbon steels and alloy steels are designated by a four digit number, where the first digit indicates the main alloying element(s), the second digit indicates the secondary alloying element(s), and the last two digits indicate the amount of carbon, in hundredths of a percent (basis points) by weight. In the 1930s and 1940s the American Iron and Steel Institute (AISI) and SAE were both involved in efforts to standardize such a numbering system for steels. These efforts were similar and overlapped significantly. It might be difficult to determine the strongest metal when considering the different characteristics attributed to metals. That said, it is probably tungsten that is the strongest of the metals (in pure form). It has the highest tensile strength of all pure metals. Alternately, titanium could be considered the strongest, as it has the highest strength-to-weight ratio of any metallic element. The strongest metal in the world is definetly Not TITANIUM. It is a super alloy of barium cobalt and tungsten. Strength and toughness do sometimes get confused. Titanium is a … blend of strength and practicality. Tungsten is the strongest natural metal and has the highest melting point. The metal with the highest Tensile strength is Steel. Steel can be hardened to make it stronger than plain iron or low grade steels. However, high-strength, hardened steels ca … n be quite brittle and will snap like glass when it fails. Titanium is a strong metal for its density. The strongest metal in the world is definetly Not TITANIUM. It is a super alloy of barium cobalt and tungsten. Strength and toughness do sometimes get confused. Titanium is a … blend of strength and practicality. Tungsten is the strongest natural metal and has the highest melting point. The sixth strongest metal is another iron alloy, tool steel, with tungsten, molybdenum, chromium and vanadium added. No. 7 is a tungsten alloy with nickel and copper. Eight and nine are a titanium alloy with aluminum added, and a cobalt-chromium alloy with additions of tungsten, nickel, and carbon. The tensile strength of a material is the amount of pulling force that can be applied before it weakens and breaks. If something were suspended from a wire, the amount of weight that could be suspended before the wire snapped would be the wire's tensile strength. The two types of strengths don't always go hand in hand Maraging steel is a member of the super-strong steel family. It is an alloy—a mixture of metals—that is heat-treated, a process that makes it very hard and tough. Maraging steel also has the ability to withstand pulling forces, or tension (tensile strength). 
http://www.wisegeek.org/what-is-the-hardest-metal.htm http://classroom.synonym.com/top-10-strongest-metals-earth-2595.html https://uk.answers.yahoo.com/question/index?qid=20060606024051AAyKEDB http://classroom.synonym.com/top-10-strongest-metals-earth-2595.html https://en.wikipedia.org/wiki/SAE_steel_grades http://www.answers.com/Q/Which_metal_is_the_strongest http://www.answers.com/Q/Which_metal_is_the_strongest http://classroom.synonym.com/top-10-strongest-metals-earth-2595.html http://www.pbs.org/wgbh/nova/tech/strong-materials.html
what is the strongest type steel