Chromium
Silicon
Manganese
Magnesium
C. Manganese
Compressive strength
Ductility
Carbon content
Hardness
Six
Twelve
Eighteen
Twenty
Delta metal
Monel metal
Constantan
Nichrome
400° to 700°C
800°C to 1000°C
1200°C to 1300°C
1500°C to 1700°C
30°C to 50°C above upper critical temperature
30°C to 50°C below upper critical temperature
30°C to 50°C above lower critical temperature
30°C to 50°C below lower critical temperature
Greater than 7
Less than 7
Equal to 7
pH value has nothing to do with neutral solution
0.1 %
0.2 %
0.4 %
0.6 %
Nickel, copper and iron
Nickel, copper and zinc
Copper, nickel and antimony
Iron, zinc and bismuth
50 : 50
30 : 70
70 : 30
40 : 60
Soft and gives coarse grained crystalline structure
Soft and gives a fine grained crystalline structure
Hard and gives a coarse grained crystalline structure
Hard and gives a fine grained crystalline structure
Austenite
Martensite
Pearlite
Cementite
Eutectic cast irons
Hypoeutectic cast irons
Hypereutectic cast irons
None of these
Tin, lead and small percentage of antimony
Tin and lead
Tin, lead and silver
Tin and copper
Greater than 7
Equal to 7
Less than 7
pH value has nothing to do with basic solution
Does not effect
Decreases
Increases
None of these
RC 65
RC 48
RC 57
RC 80
Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal
Have the same orientation and their similar faces are parallel
May be defined as the smallest parallelepiped which could be transposed in three coordinate directions to build up the space lattice
All of the above
Ferrite and cementite
Cementite and gamma iron
Ferrite and austenite
Ferrite and iron graphite
Steels are heated to 500 to 700°C
Cooling is done slowly and steadily
Internal stresses are relieved
All of these
Tin, antimony, copper
Tin and copper
Tin and lead
Lead and zinc
Large surface wear
Elevated temperatures
Light load and pressure
High pressure and load
Duralumin
Y-alloy
Magnalium
Hindalium
Coordination number
Atomic packing factor
Space lattice
None of these
Increase hardenability
Reduce machinability
Increase wear resistance
Increase endurance strength
Aluminium, copper etc.
Nickel, molybdenum etc.
Nickel, Copper, etc.
All of the above
Is less tough and has a greater tendency to distort during heat treatment
Is more ductile and has a less tendency to distort during heat treatment
Is less tough and has a less tendency to distort during heat treatment
Is more ductile and has a greater tendency to distort during heat treatment
Copper and zinc
Copper and tin
Copper, tin and zinc
None of these
Providing corrosion resistance
Improving machining properties
Providing high strength at elevated temperatures
Raising the elastic limit
Copper and tin
Copper and zinc
Copper and iron
Copper and nickel
Greater than 7
Less than 7
Equal to 7
pH value has nothing to do with neutral solution