New material for armor

[Aleshandre]

I created a new material for mecha/spacecraft/etc. armor and superstructure. It's based on a material that I know is being developed currently, so I made it PL 6. The basic idea is that it is lighter than steel and stronger (the RL material is intended for armor plating for tanks). I'm leaving out the flavor text and name, because they're really irrelevant to the stats.
The question is how balanced is it as written? Is it over the top?
For Mecha superstructure
Hardness: 17
Base Purchase Modifier: +2

For Mecha armor
Equipment bonus: +9
Armor Penalty: -4
Speed Penalty: None
Purchase DC: 15 +1/2 Base Purchase DC

 

[domino]

For what system?

Also, is this Amorphous Metal? Because that's cool stuff.

 

[Aleshandre]

It's for D20 Future - and no, it's not amorphous metal.