What materials are used to make mechanical jacks?

Mechanical jacks are typically made from durable materials such as steel or aluminum for their structural components, providing strength and stability. The lifting mechanism often includes gears and screws, which are also made from high-strength metals to withstand heavy loads. Additionally, rubber or plastic may be used for grips or pads to enhance stability and prevent slipping. These materials collectively ensure the jack's reliability and longevity under load.