engineering recuitment AAI JE Technical Mock Test 2020-21 Engineering Materials Science Heat Treatment Process
The correct sequence in increasing hardness of tool materials is
1
HSS, tungsten carbide, cubic boron nitride, diamond
2
HSS, cubic boron nitride, tungsten carbide, diamond
3
cubic boron nitride, HSS, tungsten carbide, diamond
4
tungsten carbide, cubic boron nitride, HSS, diamond