Hardness Tests and Charpy Impact Test Essay example
1) To compare the hardness between mild steel, carbon steel through Vickers Hardness Test. 2) To compare the hardness between High Quality Carbon Steel and ASSAB steel through Rockwell Hardness Test. 3) To compare the hardness between carbon steel and mild steel through Brinell Hardness Test. 4) To study the differences between mild steel and carbon steel upon Charpy Impact Test.
Hardness is a measure of the resistance of a metal to permanent (plastic) deformation. The hardness of a metal is measured by forcing an indenter into its surface. The indenter material, which is usually a ball, pyramid, or cone, is made of a material much harder than the material …show more content…
Brinell Hardness Test 7) The mild steel is placed correctly on the anvil of the instrument. 8) The base of the instrument is slowly rotated until the specimen touches the indenter. 9) The right holder of the machine is adjusted until it reaches the 1000kgf load. 10) The indenter is pressed on the sample by an accurately controlled force for about 15 seconds of dwell time. 11) The indenter is removed slowly after 15 seconds, leaving a round