Question

For how long is the load maintained in a Brinell test?

(a) 2-4 seconds

(b) 10-15 seconds

(c) 20-30 seconds

(d) 45-55 seconds

I had been asked this question in homework.

This key question is from Hardness Tests on Metals in portion Wear of Metals, Mechanical Properties and Testing of Engineering Material & Metallurgy

Answer 1

Correct choice is (b) 10-15 seconds

The best I can explain: In the Brinell hardness test, the indenter is forced into the surface of the metal and maintained there for 10-15 seconds. This can take a standard load of 500-3000 kg in 500 kg increments.