Heavy objects are typically made from which type of metals?

Heavy objects are typically made from iron and steel due to their properties that provide strength and durability. Iron is one of the most abundant metals and has been used for centuries in construction and manufacturing due to its ability to bear substantial loads. Steel, an alloy of iron with carbon and other elements, enhances iron's inherent properties, resulting in a material that is both strong and tough, making it suitable for a variety of applications ranging from structural components to industrial machinery.

The combination of these metals allows for the creation of heavy machinery, vehicles, and construction materials that require high tensile strength and resistance to impact. This capability is crucial in industries where safety and reliability under heavy loads are paramount, such as construction, transportation, and manufacturing.

While other options present various materials, they do not have the same combination of weight-bearing capacity and versatility as iron and steel, making them less suitable for applications requiring heavy-duty materials.