Solve this multiple-choice question and choose the correct option.

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Work-hardenable alloy steel for earthmoving equipment blades Blades of bulldozers, bucket wheel excavators, and similar equipment use a work-hardenable alloy steel. Besides Fe and C, which alloying element characterizes this steel? Choose the correct option.

Difficulty: Easy

Chromium
Silicon
Manganese
Magnesium

Correct Answer: Manganese

Explanation:

ConceptThe steel is Hadfield manganese steel (~12–14% Mn), famous for extreme work hardening and high impact resistance, widely used for shovel/bulldozer blades, crusher liners, and track components.

Final AnswerManganese

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