Set 3 Practice Mode

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Q10573
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Which category of stainless steel contains a mixture of ferrite austerity and is magnetic?
Q10574
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Which category of stainless steel is non-magnetic?
Q10575
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Which steel is referred as 'High speed steel'?
Q10576
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What is the percentage of nickel in invar steel?
Q10577
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Which metal is also referred as 'German Silver'?