In case of very hard surfaces the Brinell Hardness test method fails to give reliable results because
A)Ball does not force into the metal
B)Ball deforms on very hard surfaces
C)Ball slips along the surface
D)It is generally not desired to use this method in such cases
E)None of the above

Question

Quizplus · Accepted Answer

The Brinell Hardness test involves pressing a hard metal ball into the surface of the material being tested. When the surface is very hard, the ball itself can deform instead of making an accurate indentation in the material, leading to unreliable results.

In Case of Very Hard Surfaces the Brinell Hardness Test