Chrome vanadium steels usually contain 0.8 to 1.1% Cr, 0.25 to 0.35% C and

Question

Chrome vanadium steels usually contain 0.8 to 1.1% Cr, 0.25 to 0.35% C and < 0.25% V. It is ______________________?

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Having poor fatigue resistance

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Used for making axle & shafts of aeroplanes, automobiles and locomotives

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Having poor toughness

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Not helpful in producing cleaner steel due to oxidising action of vanadium

Chrome vanadium steels usually contain 0.8 to 1.1% Cr, 0.25 to 0.35% C and < 0.25% V. It is ______________________?