Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and ___________________?
Correct answer: B. Manganese
- A. Silicon
- B. Manganese
- C. Nickel
- D. Chromium
Explanation
The work-hardening steel used in excavator buckets and bulldozer blades is manganese steel, commonly containing iron, carbon, and a high proportion of manganese. Manganese promotes the strong strain-hardening response needed in abrasive service.
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