How realistic are Mass-Strength Ratios >1?

[Incarnation of Chaos]

So iv'e had this question for a while but only recently have really been working with planes enough for it to really nag me; when you're using procedural wings there's a slider to increase "Mass-Strength Ratio" which i tend to set at 2 to prevent hypersonic shock from tearing them into pieces.

Spoiler

https://imgur.com/a/Ar8Z5z4

But it's had me wondering; how realistic is this? Are there materials that exist now with such ratios?  Are there any in common use with higher ratios? Are they metallic or composite?

[bewing]

Very realistic. Just stepping up from aircraft aluminum alloys to titanium alloys easily gets you a factor of 2 to 3 in the ratio.

And you can get another factor of 10 by going to composites.

 

[Incarnation of Chaos]

48 minutes ago, bewing said:

Very realistic. Just stepping up from aircraft aluminum alloys to titanium alloys easily gets you a factor of 2 to 3 in the ratio.

And you can get another factor of 10 by going to composites.

 

Awesome; thx for answering my dumb question xD.

[Snark]

Moving to Add-on Discussions, since this is about a mod and not the stock game.