Alloys Flashcards
What is an alloy
When two metals are mixed together to give an alloy with desired properties
What % is Iron pure from a blast furnace
96%
What is the rest of Iron from the blast furnace
Impurities such as carbon
What do we call impure Iron
Cast Iron
What is a use for Cast Iron
Ornamental railings
Why is impure Iron generally not useful
Brittle
What is the issue with Pure Iron
Too bendy
Why is pure iron so bendy
It has a regular arrangement of identical atoms meaning the layers easily slide over each other
What are pure irons converted to
Steels
How do you convert pure iron into a steel
Add small amounts of carbon or other metals to Iron
How are alloys made harder//use an example
Carbon&Iron
Smaller carbon atoms upset the Iron layers making it harder for them to slide over one another =stronger
What % Carbon is Low-carbon steel
0.1%
What % Carbon is High-carbon steel
1.5%
What is added to Iron to get Stainless steel
Chromium
Nickel
What is the use for Low carbon steel
Car bodies
