The materials used in the construction of an electric wire rope hoist crane can vary depending on factors such as the specific application, the environment in which it will be operating, and the manufacturer's design choices. However, some common materials typically found in electric wire rope hoist cranes include:

Steel: Steel is the primary material used in the construction of the structural components of the crane, including the main frame, beams, and support structures. Steel is favored for its strength, durability, and ability to withstand heavy loads.

Aluminum: In some cases, aluminum may be used for certain components of the crane, particularly in lighter-duty applications or where weight considerations are important. Aluminum offers advantages such as corrosion resistance and reduced weight compared to steel.

Wire Rope: The wire rope used in the hoisting mechanism is typically made of high-strength steel wires twisted or braided together. These steel wires provide the necessary strength and durability to lift heavy loads safely.

Electrical Components: Various electrical components, such as motors, gears, switches, and wiring, are typically made of materials suitable for electrical conductivity and insulation. These may include copper, aluminum, and various plastics and polymers.

Bearings and Bushings: Bearings and bushings are used in moving parts of the crane, such as pulleys, sheaves, and rotating joints. These components are often made of steel or other metals, with lubricants or coatings to reduce friction and wear.

Fasteners: Nuts, bolts, screws, and other fasteners used to assemble the crane are typically made of steel for strength and durability.

Protective Coatings: Many components of the crane may be coated or treated to provide protection against corrosion, abrasion, and other forms of wear and tear. Common coatings include paint, galvanization, and specialized corrosion-resistant coatings.

Safety Features: Various safety components, such as emergency stop buttons, limit switches, and safety guards, may be made of materials such as plastics, metals, or other durable materials designed to withstand impacts and harsh environments.

Overall, the materials used in the construction of an electric wire rope hoist crane are selected to ensure durability, safety, and reliable performance in the intended application and operating conditions.