Question

The ability of material to resist softening at high temperature is known as

Answer 1

The answer is hot hardness.

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Answer 2

The ability of a material to resist softening at high temperatures is known as hot hardness.

Explanation:

• This terminology hot hardness is usually used in engineering and metallurgy.
• It is also known as red hardness.
• Here hardness is at a very high temperature.
• At hot hardness temperature the metal becomes red hot it glows dull red at such a high temperature.
• As the temperature increases at such a high value the hardness of the metal decreases and at some point it becomes red.