Tuesday, March 30, 2010

Types of Hardness Test

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

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