C 4.1 Steel and other alloys Flashcards

(8 cards)

1
Q

What is steel?

A

An alloy of iron and carbon, sometimes with other elements.

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2
Q

Why is steel harder than pure iron?

A

The carbon atoms distort the layers in iron, making it harder for them to slide over each other.

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3
Q

What are the three main types of steel?

A

Low-carbon steel, High-carbon steel, Stainless steel.

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4
Q

What is low-carbon steel like, and what is it used for?

A

Soft and easily shaped.

Used for car bodies and containers.

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5
Q

What is high-carbon steel like, and what is it used for?

A

Hard and brittle.

Used for cutting tools and blades.

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6
Q

What is stainless steel, and what are its key properties?

A

Contains chromium (and sometimes nickel).

Resistant to corrosion and rusting. Used for cutlery, medical tools, sinks.

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7
Q

Why are steels more useful than pure iron?

A

Because steel is stronger, more durable, and can be tailored for different uses by changing the amount and type of added elements.

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8
Q

Give two examples of other important alloys besides steel.

A

Brass = copper + zinc.

Used in instruments and fittings. Bronze = copper + tin.

Used in statues, medals.

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