Grey cast iron | EXAMIANS

Engineering Materials
Grey cast iron

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

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

Is produced by small additions o magnesium (or cerium) 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 is obtained by cooling rapidly. It is almost unmachinable

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

Is produced by small additions o magnesium (or cerium) 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

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Engineering Materials
Chromium in steel

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

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

Improves wear resistance, cutting ability and toughness

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Engineering Materials
Body centered cubic space lattice is found in

Zinc, magnesium, cobalt, cadmium, antimony and bismuth

Gamma iron, aluminium, copper, lead, silver and nickel

None of these

Alpha iron, tungsten, chromium and molybdenum

Zinc, magnesium, cobalt, cadmium, antimony and bismuth

Gamma iron, aluminium, copper, lead, silver and nickel

None of these

Alpha iron, tungsten, chromium and molybdenum

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Engineering Materials
In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled

Suddenly in a suitable cooling medium

Any one of these

Slowly in the furnace

In still air

Suddenly in a suitable cooling medium

Any one of these

Slowly in the furnace

In still air

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Engineering Materials
The property of a material due to which it breaks with little permanent distortion, is called

Plasticity

Ductility

Brittleness

Malleability

Plasticity

Ductility

Brittleness

Malleability

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Engineering Materials
Constantan an alloy used in thermocouples is an alloy of

Copper and tin

Copper and nickel

Copper and zinc

Copper and iron

Copper and tin

Copper and nickel

Copper and zinc

Copper and iron

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Engineering Materials

Engineering Materials Grey cast iron

Engineering Materials Chromium in steel

Engineering Materials Body centered cubic space lattice is found in

Engineering Materials In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled

Engineering Materials The property of a material due to which it breaks with little permanent distortion, is called

Engineering Materials Constantan an alloy used in thermocouples is an alloy of

Engineering Materials
Grey cast iron

Engineering Materials
Chromium in steel

Engineering Materials
Body centered cubic space lattice is found in

Engineering Materials
In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled

Engineering Materials
The property of a material due to which it breaks with little permanent distortion, is called

Engineering Materials
Constantan an alloy used in thermocouples is an alloy of