Question:
Choose the correct order of different alloying elements present in stainless steel based on their percentage composition:
A. Ni (Nickel)
B. Fe (Iron)
C. Cr (Chromium)
D. C (Carbon)
Choose the correct order of different alloying elements present in stainless steel based on their percentage composition:
A. Ni (Nickel)
B. Fe (Iron)
C. Cr (Chromium)
D. C (Carbon)
B. Fe (Iron)
C. Cr (Chromium)
D. C (Carbon)
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Chromium gives corrosion resistance; iron remains base metal.
Updated On: May 22, 2026
- Fe > Ni > Cr > C
- Cr > Fe > Ni > C
- Cr > C > Ni > Cr
- Fe > Cr > Ni > C
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The Correct Option is D
Solution and Explanation
Concept:
Stainless steel composition:
• Fe is base metal (major constituent)
• Cr provides corrosion resistance
• Ni improves ductility and toughness
• C present in very small amount
Step 1: Identify largest component.
Iron (Fe) is dominant → highest percentage
Step 2: Next major element.
Chromium typically 10–20% → second highest
Step 3: Nickel.
Present in moderate amounts → third
Step 4: Carbon.
Very small percentage → least
Step 5: Arrange order.
\[ Fe > Cr > Ni > C \] Final Answer: \[ \boxed{Fe > Cr > Ni > C} \]
• Fe is base metal (major constituent)
• Cr provides corrosion resistance
• Ni improves ductility and toughness
• C present in very small amount
Step 1: Identify largest component.
Iron (Fe) is dominant → highest percentage
Step 2: Next major element.
Chromium typically 10–20% → second highest
Step 3: Nickel.
Present in moderate amounts → third
Step 4: Carbon.
Very small percentage → least
Step 5: Arrange order.
\[ Fe > Cr > Ni > C \] Final Answer: \[ \boxed{Fe > Cr > Ni > C} \]
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