hard and brittle materials
soft and ductile materials
hard and ductile materials
soft and brittle materials
coarse grained
fine grained
medium grained
Brinell hardness number
Rockwell hardness number
Vickers pyramid number
letter of alphabet
hardness of the material being ground
speed of the wheel and work
condition of grinding machine
all of these
The grade of grinding wheel depends upon * hardness of the material being ground * speed of the wheel and work * condition of grinding machine