One reason biological materials are so amazing (much stronger, etc, like spider silk) is they are essentially made one atom at a time.

If we can do the same thing, but using inorganics we can create some amazing materials. Steel for example is made of a myriad of various crystals and alloys arranged as grains. Tons of work goes into the exact processing needed to encourage one type or another of grain. If we could exactly control where each atom of the iron, carbon, and other elements go we would create a material much much stronger than anything we can do today.