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WorksheetsRockwell Hardness test_Material Testing Lab
Total questions: 10
Worksheet time: 20mins
Rockwell test utilizes ___________ a measure of hardness.
Load
Depth of indentation
Diameter of indentation
Time of loading
A minor load of _________ is applied to seat the specimen in the Rockwell test.
1 kg
5 kg
10 kg
150 kg
What is a limitation of the Rockwell test?
Slow speed
Personal error
Bigger size of indentation
Different indenters
which material is hardest
Aluminium
Copper
Steel
What minimizes the amount of surface preparation in Rockwell test?
Minor load
Indenter surface
Indenter geometry
Heat-treatment
Hardened steel is tested on the C scale with ________ indenter and a _______ kg major load.
1.6 mm steel ball, 100
Diamond, 150
Diamond, 100
3.2 mm steel ball, 150
Which scale is used to test softer materials?
A
B
C
D
Which method of hardness test is most widely used?
Brinell
Rockwell
Shore
Vickers
