Is aluminum alloy bicycle frame better or high carbon steel better?

Aluminum alloy has better corrosion resistance and long life, which meets the outdoor environment requirements of mountain bikes.
1. Frame:
The high-carbon steel frame is slender; the aluminum alloy frame is relatively sturdy.
2. Pipe shape:
High-carbon steel pipes are mostly round or elliptical, with fewer special-shaped pipes; aluminum alloys have many changes in shape, and the pipes of the frame have special-shaped structures.
3. Solder joints:
High-carbon steel welded joints are relatively small, usually not polished; aluminum alloy welded parts usually have large welded joints.
4. Weight:
High-carbon steel is heavier; aluminum alloy frames are much lighter than high-carbon steel frames.