Metals:

Aluminum: Aluminum alloys are widely used in robotics due to their lightweight, high strength-to-weight ratio, and good corrosion resistance.

Steel: Steel is chosen for its strength, durability, and toughness, especially for structural components and gears.

Titanium: Titanium alloys offer a high strength-to-weight ratio, excellent corrosion resistance, and biocompatibility, making them suitable for advanced robotic applications.

Copper: Copper is utilized for its excellent electrical conductivity, making it useful for electrical components and wiring in robots.

Magnesium: Magnesium alloys are lightweight and have good mechanical properties, making them suitable for weight-sensitive robot parts.

Plastics:

ABS (Acrylonitrile Butadiene Styrene): ABS is a commonly used thermoplastic known for its impact resistance and durability. It is often used for robot housing and structural components.

Polycarbonate (PC): PC is a tough, transparent plastic that offers good impact resistance and high temperature resistance. It is used for robot covers and protective shields.

Nylon:Nylon, or polyamide, is valued for its strength, flexibility, and wear resistance. It is used for gears, bearings, and flexible components in robots.

Polypropylene (PP): PP is a lightweight and chemical-resistant plastic. It finds applications in robot casings and components requiring chemical resistance.

Polyethylene (PE): PE is a versatile plastic with good chemical resistance and low friction properties. It is used for various robot components, including cables and connectors.