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Strongest steel?

  1. Feb 19, 2012 #1

    What is the strongest steel?

    I did a quick search and found this steel with ultimate tensile strength over 5 GPa. Is it possible or just a mistake because at much lower per weight than that, titanium is used in aerospace industry, while this steel application seems consist nothing important:

  2. jcsd
  3. Feb 19, 2012 #2


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    Staff: Mentor

    From the cited link:

    Applications: punches, dies for blanking, piercing dies, forming rolls and dies, cold heading, steel mill rolls, cold extrusion, slitter knives, shears, pelletizer blades, nozzles, woodworking tools, cold extrusion barrels, cold extrusion liners, plastic injection molds, compacting tools

    Those seem pretty important applications.
  4. Feb 19, 2012 #3


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    Science Advisor
    Homework Helper

    The most common aerospace alloy Ti 6-4, has a UTS of about 1 GPa, not 5GPa.
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