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Question

Chilled cast iron is _____.

The correct answer is
High resistance to wear

Chilled Cast Iron Wear Resistance

Chilled cast iron is a specific type of cast iron treated to develop a hard surface layer. This is achieved through rapid cooling (chilling) during the casting process.

Property Analysis

  • The chilling process creates a surface layer of 'white iron', which is significantly harder than regular 'grey iron'.
  • This inherent hardness provides excellent resistance to abrasive wear and abrasion.
  • Consequently, chilled cast iron exhibits high resistance to wear.
  • The hard surface makes it difficult to machine and is the opposite of being soft.

Conclusion

Based on its metallurgical structure, chilled cast iron's primary characteristic among the given options is its superior wear resistance.

Therefore, the correct statement is that chilled cast iron has high resistance to wear.

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Important Questions from Properties of Materials

  1. The photoelectric current depends on which of the following factors?

    1. The frequency of the incident light

    2. The intensity of the incident light

    3. The potential difference between the electrodes

    4. The photosensitivity of the non-mental
  2. Vanadium is added to steel as an alloying element to

  3. Babbit is an alloy of

  4. To improve the machinability, the alloying element of steel is:

  5. Which of the following hardness tests is best suitable for brittle materials such as ceramics?

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