Home » Mechanical Engineering » Engineering Materials

Carbon content range for cast irons Select the correct typical carbon range that defines cast iron (as opposed to steel). Choose the correct option.

Q: Carbon content range for cast irons Select the correct typical carbon range that defines cast iron (as opposed to steel). Choose the correct option.

Concept Cast iron is generally defined for carbon contents from about 2% up to roughly 4.3–4.5%. Many curricula round the lower bound to 1.7% (the eutectoid limit of steel) to distinguish it clearly from steels. Final Answer 1.7 to 4.5% C

Difficulty: Easy

0.1 to 0.5% C
0.5 to 1.0% C
1.0 to 1.7% C
1.7 to 4.5% C

Correct Answer: 1.7 to 4.5% C

Explanation:

Concept
Cast iron is generally defined for carbon contents from about 2% up to roughly 4.3–4.5%. Many curricula round the lower bound to 1.7% (the eutectoid limit of steel) to distinguish it clearly from steels.

Final Answer
1.7 to 4.5% C

← Previous Question Next Question→

More Questions from Engineering Materials

Full annealing practice for hypo-eutectoid steel In full annealing of a hypo-eutectoid steel, the steel is heated to 30–50°C above the upper critical temperature and then cooled how? Choose the correct option.
Effect of small boron additions to steel A small percentage of boron is added to steels primarily to achieve which effect? Choose the correct option.
Classification of cast irons by carbon content Iron–carbon alloys containing 1.7 to 4.3% carbon are classified as which type of cast iron with respect to the eutectic composition (≈4.3% C)? Choose the correct option.
Heat treatment sequence: Arrange the metallurgical phenomena in correct chronological order for annealing of cold-worked steels. As temperature/time increases during a standard annealing heat cycle, the microstructural stages occur in a characteristic order (stress relief/recovery, recrystallisation, grain growth). Choose the correct sequence.
Cast iron heat treatment: Identify how malleable cast iron is produced. Manufacturing route selection for obtaining malleable (toughened) cast iron from a base iron. Choose the correct process description.
Material property for shock-resisting steels: Identify the most critical requirement. Design focus: Select the dominant mechanical property needed when steels must withstand sudden impacts and shocks. Choose the correct property.
The hardness of steel depends upon the
When a low carbon steel is heated upto upper critical temperature
Which of the following statement is correct?
Which of the following statements are true for annealing of steels?

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion