2.4 - Hardness
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Practice Questions
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What does hardness refer to in materials?
💡 Hint: Think about how materials react to being scratched.
Name one method to measure hardness.
💡 Hint: One method measures indentation size, the other measures depth.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is hardness in the context of materials?
💡 Hint: Think about how you would describe a very hard material.
True or False: The Rockwell hardness test measures the diameter of an indentation.
💡 Hint: Think about which measurement gives a better indication of hardness.
1 more question available
Challenge Problems
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You need to select an aluminum alloy for a structure that will face high wear and tear. Explain how you would determine the required hardness and which tests you might choose.
💡 Hint: Consider both the application’s environment and expected stress.
Given two aluminum alloys, one with a Brinell hardness of 60 HB and another with 120 HB, explain the impact this difference in hardness could have on their applications.
💡 Hint: Think about the environments where each might be used.
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