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High speed steel tools retain their hardness up to a temperature...

This question belongs to Mechanical Engineering Manufacturing And Production Technology
Manufacturing and Production Technology
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High speed steel tools retain their hardness up to a temperature of

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Correct Answer: Option D
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1 Comment
Mehul Rabari
Mehul Rabari 8 years ago
due to tungsten 18 4 cr 1 vandium 0.7 carbon
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