Which is the better home folding ladder, aluminum or carbon steel?

Carbon steel is heavier, but sturdy. Aluminum, lightweight. As long as the purchase in the load-bearing range, never heard of aluminum alloy can be crushed. Household folding ladder carbon steel material and aluminum alloy material, each has its own strengths and weaknesses. Household folding window is characterized by easy to move. Aluminum alloy material folding ladder, lightweight, easy to move and load, in the residential decoration project is commonly used. The carbon structural steel folding ladder, due to its rigidity, hardness, strength, are due to aluminum alloy, so in the outdoor elevation work, especially can be telescopic folding ladder, mostly using carbon structural steel materials.