金屬：材料、來源與特性：練習題

Which property describes a metal's ability to be drawn out into a long, thin wire without breaking?

In the context of material origins, bauxite is the primary ore used to produce which metal?

A structural engineer is designing a beam to span a large distance. They decide to use a standard I-beam section instead of a solid rectangular bar of the same material. What is the primary reason for this?

Which of the following is a non-ferrous metal commonly used in the manufacture of drinks cans due to its lightweight and corrosion-resistant properties?

Which property is specifically defined as the ability of a metal to be permanently deformed or stretched by pulling forces without fracturing?

Identify one common use for the non-ferrous metal copper and state a property that makes it suitable for this application.

Explain why stainless steel is often selected for the manufacture of kitchen sinks despite being more expensive than mild steel.

Evaluate the use of 7000 series aluminium for high-performance bicycle frames, referencing its specific mechanical properties and the ecological footprint associated with its processing.

A local charity is commissioning a small batch of commemorative medallions to celebrate its 50th anniversary. The medallions must be durable, have a distinctive golden appearance, and be easy to cast into a detailed mold.

(a) Identify the most suitable non-ferrous metal for these medallions from the following list: Aluminium, Copper, Brass. (1 point)

(b) State two reasons why the chosen metal is appropriate for this specific application. (2 points)

A specialized aerospace company is selecting a material for a structural component that must withstand high temperatures and resist corrosion while remaining lightweight.

(a) Evaluate why Titanium would be selected over Mild Steel for this specific aerospace application. (2 points)

(b) Describe how the ecological footprint of extracting titanium compares to iron ore, referring to the energy required for processing. (2 points)