What is the most durable material for the elevator shaft of family villa?

I recommend aluminum alloy as the best material. For example, ZADIM Xibeim household elevator adopts high-strength aluminum alloy hoistway frame structure, the wall thickness of the main structure is above 3.5mm, and the maximum thickness is 7mm, which makes the aluminum profile of the hoistway still have high strength and mechanical properties under the condition of small interface. ZADIM Xibeim household elevator adopts steel belt traction, reinforced car frame drive and multiple protection safety.