Classify materials, including recognising and describing how engineers classify materials into metals and alloys, composite materials, polymers, ceramics and natural materials.

A structural engineer is selecting materials for a pedestrian bridge and has identified three candidate materials: carbon fibre reinforced polymer (CFRP), aluminium 6061-T6, and porcelain. Classify each of the three materials into their appropriate engineering material category.

A sports equipment manufacturer is selecting materials for three new products: • a high-temperature furnace lining for heat-treating metal components • a lightweight bicycle frame that requires high strength-to-weight ratio • a flexible water bottle for outdoor activities. Classify each of the following materials into their correct engineering material category: a) silicon carbide used for the furnace lining b) carbon fibre reinforced polymer (CFRP) used for the bicycle frame. Identify the material classification for each.

A structural engineer is selecting materials for the components shown in the diagram below. Each component requires specific material properties for its application. Which material classification is most appropriate for Component C, the insulating heat shield?

The table below shows the properties of five materials being considered for different components in a portable sports equipment design. Which material should be classified as a composite material?

An automotive engineer is evaluating materials for different vehicle components. The shortlist includes high-density polyethylene (HDPE) for interior trim, glass fibre reinforced plastic (GFRP) for body panels, and titanium alloy Ti-6Al-4V for fasteners. Classify each of the three materials into their appropriate engineering material category.