What material are escalator steps typically made of?

Escalator steps are typically made of steel or aluminum with a traction surface for several reasons. First, these materials provide the necessary strength and durability to withstand heavy foot traffic and the mechanical stresses that occur during operation. Steel is particularly favored for its structural integrity and resistance to wear, while aluminum offers a lighter alternative that still meets strength requirements.

Additionally, the traction surface is critical for safety, as it minimizes the risk of slipping when users step on or off the escalator. This surface is often designed with grooves or patterns that enhance grip, contributing to overall user safety. By using steel or aluminum, manufacturers ensure that the escalator steps can endure long periods of use while maintaining the safety and comfort of passengers. This design consideration aligns with industry standards and regulations for escalators, further reinforcing this choice as the correct answer.