Four types of hardness :
1. Brinell
Indenter : 10 mm sphere of steel or tungsten carbide
2. Vickers
Indenter : Diamond pyramid
3. Knoop microhardness
Indenter : Diamond pyramid
4. Rockwell
A, C, D Indenter : Diamond cone
B, F, G Indenter : 1/16 in diameter steel sphere
E Indenter : 1/8 in diameter steel sphere
Tuesday, March 30, 2010
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