Alloys Flashcards
1
Q
What percentage of iron from a blast furnace is iron?
A
96%
2
Q
What do the impurities in iron make it?
A
Brittle, giving it limited uses
3
Q
Why is iron from a blast furnace used as cast iron?
A
Because of its strength in compression
4
Q
What is most iron converted into?
A
Steel (an alloy)
5
Q
What’s an alloy?
A
A mixture of metals
6
Q
What is steel made from?
A
Iron and carbon
7
Q
Alloys can be designed to have…
A
Properties for specific uses
8
Q
What’s a property of low-carbon steels?
A
Easily shaped
9
Q
What’s a property of high-carbon steels?
A
They are hard
10
Q
What are stainless steels resistant to?
A
Corrosion
11
Q
Most metals in everyday use are…
A
Alloys
12
Q
Why are soft metals like gold mixed with small amounts of similar metals?
A
To make them harder for everyday use
