Engineering Materials
Which of the following display properties similar to that of steel?

Both (A) and (B)
Blackheart cast iron
Whiteheart cast iron
None of these

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Engineering Materials
Cyaniding is the process of

Adding carbon and nitrogen by heat treatment of steel to increase its surface hardness
Obtaining cyanide salts
Dipping steel in cyanide bath
Reacting steel surface with cyanide salts

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Engineering Materials
Chromium in steel

Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties
Gives ductility, toughness, tensile strength and anti-corrosion properties
Improves wear resistance, cutting ability and toughness
Improves cutting ability and reduces hardenability

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