VS. TIN W H I C H I S B E T T E R F O R C A N S ? APPEARANCE - - PowerPoint PPT Presentation

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Mar 18, 2024 271 likes •389 views

ALUMINUM VS. TIN W H I C H I S B E T T E R F O R C A N S ? APPEARANCE Both refined aluminum and tin are silvery-gray in color. Evaluation: T he appearance of the two metals doesnt affect their use in cans. HARDNESS Aluminum has a

SLIDE 1

ALUMINUM

VS. TIN

W H I C H I S B E T T E R F O R C A N S ?

SLIDE 2

APPEARANCE

Both refined aluminum and tin are silvery-gray in color.

Evaluation: The appearance of the two metals doesn’t affect their use in cans.

SLIDE 3

HARDNESS

Aluminum has a hardness of 2−2.9
n the Mohs scale.
Tin has a hardness of 1.5−1.8 on

the Mohs scale.

Though tin is softer than aluminum,

it is more durable.

Evaluation: Tin-coated steel seems better suited for use in cans

since it’s more durable.

SLIDE 4

LUSTER

Aluminum has a metallic luster.
Tin has a metallic luster.

Evaluation: Because both tin and aluminum have the same luster,

there is no benefit of using one resource over the other.

SLIDE 5

MAGNETISM

Aluminum is not magnetic.
Tin has very weak magnetism.

Evaluation: There does not seem to be a benefit of one over the

ther in terms of magnetism.

SLIDE 6

RECYCLING

Both aluminum and tin/steel cans are 100%

recyclable; however, aluminum recycling is more energy- and cost-efficient.

Only about 50% of aluminum cans are currently

recycled, while 65% of tin/steel is recycled.

Recycling metals reduces the amount of ore that

needs to be mined.

Evaluation: Aluminum has the advantage of easier recycling.

SLIDE 7

ABUNDANCE

Aluminum is most commonly found as the ore bauxite. It is

the third most abundant element in Earth’s crust and the most abundant metal.

Tin is most commonly found as the ore cassiterite. It is the

49th most abundant element in Earth’s crust.

While bauxite is more common than cassiterite, it’s more

difficult to refine.

Evaluation: Aluminum is harder to refine, but much more

abundant, so it’s more available.

SLIDE 8

OTHER NOTABLE CHARACTERISTICS

Aluminum cans, unlike tin, do

not usually affect food or beverage taste.

Aluminum cans are lighter in

weight and save on shipping costs.

Evaluation: Aluminum is preferable over tin-coated steel cans.

SLIDE 9

CONCLUSION

Because aluminum is more abundant, easier to recycle, lighter in

weight, and does not affect food and beverage taste, it is preferable to tin for canning.

SLIDE 10

IMAGE ATTRIBUTIONS

Page 2: mrtwister / 123rf Page 2: Alexandr Blokhin / 123rf Page 3: Stephan Stockinger / 123rf Page 4: Jag_cz / Shutterstock Page 5: Oleksiy Mark / Shutterstock Page 6: barbaliss / Shutterstock Page 7: vvoe / Shutterstock Page 7: vvoennyy / 123rf Page 8: Digital Genetics / Shutterstock