Strongest Steel: Ultimate Tensile Strength 5 GPa

[lemd]

Hi,

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:
http://www.matweb.com/search/datasheet.aspx?matguid=638937fc52ca4683bc0c3f18f54f5a24

Regards.

 

[Astronuc]

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.

 

[AlephZero]

Is it possible or just a mistake because at much lower per weight than that, titanium is used in aerospace industry

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