The alloying element which can replace tungsten in high speed steels is

Engineering Materials
The alloying element which can replace tungsten in high speed steels is

Vanadium

Molybdenum

Cobalt

Nickel

Vanadium

Molybdenum

Cobalt

Nickel

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Engineering Materials
Nickel in steel

Gives ductility, toughness, tensile strength and anti-corrosion properties

Improves wear resistance, cutting ability and toughness

Improves cutting ability and reduces hardenability

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

Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties

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Engineering Materials
The blade of a power saw is made of

Boron steel

High speed steel

Malleable cast iron

Stainless steel

Boron steel

High speed steel

Malleable cast iron

Stainless steel

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Engineering Materials
In mottled cast iron, carbon is available in

Combined form

Nodular form

Free form

Partly in free and partly in combined state

Combined form

Nodular form

Free form

Partly in free and partly in combined state

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Engineering Materials
White cast iron

Is produced by annealing process. It is soft, tough and easily machined metal

Is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material

Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

Is produced by annealing process. It is soft, tough and easily machined metal

Is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material

Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

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Engineering Materials
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

Eutectic cast irons

Hypoeutectic cast irons

Hypereutectic cast irons

None of these

Eutectic cast irons

Hypoeutectic cast irons

Hypereutectic cast irons

None of these

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Engineering Materials

Engineering Materials The alloying element which can replace tungsten in high speed steels is

Engineering Materials Nickel in steel

Engineering Materials The blade of a power saw is made of

Engineering Materials In mottled cast iron, carbon is available in

Engineering Materials White cast iron

Engineering Materials Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

Engineering Materials
The alloying element which can replace tungsten in high speed steels is

Engineering Materials
Nickel in steel

Engineering Materials
The blade of a power saw is made of

Engineering Materials
In mottled cast iron, carbon is available in

Engineering Materials
White cast iron

Engineering Materials
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as