2.3.1 Material Properties and Densities

What is the density of cast iron?

• 7.85 g/cm³

• 7.9 g/cm³

• 7.2 g/cm³

• 7.73 g/cm³

Which material is used for sinks and cutlery?

• Cast Iron

• Carbon Steel

• Chrome-moly steel

• Stainless Steel

Which material is used in jewelry and water valves?

• Aluminum

• Brass

• Copper

• Bronze

What makes nonferrous metals less susceptible to rust?

• They are magnetic.

• They do not contain iron.

• They are brittle.

• They are electrical conductors.

Which material is known for being a good heat insulator?

• Aluminum

• Brass

• Ceramics

• Copper

What is a disadvantage of ceramics despite their hardness?

• They are flexible.

• They are brittle.

• They are magnetic.

• They conduct electricity.

What is a characteristic of polymers compared to metals and ceramics?

• Higher strength

• Softer and lower strength

• Higher density

• More brittle

What is a characteristic of ceramics in terms of temperature?

• Low temperature resistance

• High temperature resistance

• Medium temperature resistance

• No temperature resistance

What is Delrin® primarily used for?

• Parts designed to replace metal

• Food and liquid containers

• Soft drink and water bottles

• Photo films

Which material is used for electrical components due to heat resistance?

• Polycarbonate (PC)

• Acetal

• Polyethylene (PE)

• Ultra-high molecular weight (UHMW) Polyethylene