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.