[freebeard]

Here's a first pass at an answer, but while it's not raining, I need to get out for a bike ride.

Aluminium - Specifications, Properties, Classifications ...
https://www.azom.com/article.aspx?ArticleID=2863
The specifications, properties, classifications and class details are provided for aluminium and aluminium alloys. ... Alloying, cold working and heat-treating can all be utilised to tailor the properties of aluminium. The tensile strength of pure aluminium is around 90 MPa but this can be increased to over 690 MPa for some heat-treatable alloys.

Basalt Rock Properties and Uses - Science Struck
https://sciencestruck.com/basalt-rock-properties-uses
The rock hardness of basalt is 6 on the Mohs scale, and can be seen through a combination of its compressive strength: 100-300 Mpa (Megapascal), its tensile strength: 10-30 Mpa, and its shear strength: 20-60 Mpa, which denotes that depending on the mineral makeup, basalt rocks fall in the strong - very strong category.

Fiber Reinforced Polymers - Characteristics and Behaviors
https://www.build-on-prince.com/fibe...-polymers.html
Basalt Fiber Reinforced Polymer (BFRP) Basalt fibers have higher tensile strength than E-glass fibers but lower than S-glass, however, its cost is near the cost of E-glass. It has much better resistance than E- and S-glass to the alkalies in concrete.

Basalt Rebar (BFRP) Manufacturer - Made In USA
[/url] https://www.fiberglassrebar.us/basalt-rebar/
KODIAK Basalt Rock Rebar has the advantage of being a little lighter than glass, a little higher tensile strength than common e-glass. Weight is less than 25% the weight of steel with more than 200% the tensile strength of steel. Basalt rock fiber will withstand higher temperatures before weakening.

It's raining again. The bill will be paid later.