Material Types
Name the 4 types of engineering materials.
Metals, Polymers, Ceramics, and Composites
What are polymers made out of?
Monomers or hydrocarbons
Melting point of iron?
2800 F
I pull into my cement driveway and park the car. What type of engineering material is my car parked on top of?
A cement driveway - cement is a type of composite
Plastic is made from this resource
oil or fossil fuels or hydrocarbons
When you combine two or more forms of metals, polymers, or ceramics, you create a...
Composite
Which material is the strongest?
Metals
What type of material is glass?
Ceramics
What is an alloy?
A combination of two or more metals.
Which is the stronger material: concrete or glass
glass
What is one type of iron alloy?
Steel or Cast-Iron
What are coins like pennies, nickels, quarters and dimes made of?
zinc, nickel, copper
What does the zinc in toothpaste do for you?
Reduce plaque build up and bad breath (ODOR)
Why are alloys often preferred over pure metals?
They are more durable and resistant to corrosion.
Why is brass used in zippers?
Does not rust
This metal is liquid at room temp?
Mercury
Glue or an adhesive is considered what category of material?
Polymers
What metal is most commonly found in the human body?
Calcium
I put on my cheap HM shirt for the day. What engineering material is incorporated in my shirt?
Polymers (plastics) are often used in clothes and fabrics.
Give 5 examples of materials that fall into the Composites category?
Plywood, Concrete, carbon fiber, drywall, wood, fiberglass, etc.
What two material categories would you combine to have the lightest strongest overall material?
Polymer and Metal
Why are copper pipes used for carrying drinking water?
Copper will never rust
Name all the materials used to make a simple pencil? Be very specific!!!
Cedar wood casing, graphite/clay mix middle, aluminum base, and rubber/polymer eraser
There is something special about the numerator in the fractions of an inch between whole numbers on a tape measurer. What is it?
They are all odd numbers
What is the most expensive metal?
Rhodium