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Chemistry: 1 > Iron and Steel > Flashcards

Flashcards in Iron and Steel Deck (20):
1

What are 2 properties of pure iron?

1. Soft

2. Malleable

2

Why is pure iron soft and malleable?

Because its atoms are arranged in a regular way that allows its layers of atoms slide over each other

3

Why is pure iron not practical for many uses?

Because it is too soft

4

Complete the sentence: Iron from the blast furnace is an ____ of about ____ percent iron, with ____ and some other ______.

Iron from the blast furnace is an ALLOY of about 96 percent iron, with CARBON and some other IMPURITIES.

5

What are the 2 properties of iron from a blast furnace?

1. Hard

2. Brittle

6

What does the brittleness of iron from the blast furnace mean?

It cannot be used for many purposes

7

What do we convert iron from the blast furnace into so it is less brittle and more useful? How?

Converting it into steel by removing some of the iron

8

What are the 4 points for converting iron from a blast furnace into steel?

1. Melt the iron

2. Remove carbon by blowing oxygen into it

3. The carbon reacts with oxygen to form carbon monoxide and carbon dioxide, which escapes

4. Use enough oxygen to achieve steel with desired cabon content

5. Other metals are added to make alloys

9

What metals are often added to steel, and why?

Vanadium and chromium, to produce an alloy with properties to fit specific issues

10

What is iron alloyed with to make low carbon steel?

About 0.25 percent carbon

11

What is the property of low carbon steel?

Malleable

12

What is the typical use of low carbon steel?

Car body panels

13

What is iron alloyed with to make high carbon steel?

Up to 2.5 percent carbon

14

What is the property of high carbon steel?

Hard

15

What is a typical use of high carbon steel?

Cutting tools

16

What is iron alloyed with to make high carbon steel?

17

What 2 things is iron alloyed with to make stainless steel?

1. Chromium

2. Nickel

18

What is the property of stainless steel?

Resistant to corrosion

19

What are 2 typical uses of stainless steel

1. Cutlery

2. Sinks

20

Draw a table for with thetitles:Type of steel, Iron alloyed with, Properties, and Typical use for low carbon, high carbon, and stainless steel

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