How does the Vicker’s hardness test differ from Brinell’s?*1 pointb) Materials to be testeda) Type of indenterd) Duration of indentationc) Load applied

The Vickers hardness test differs from the Brinell hardness test in several ways:

a) Materials to be tested: Both tests can be used to measure the hardness of various materials, including metals and alloys. However, the Vickers test is more commonly used for testing harder materials, while the Brinell test is typically used for softer materials.

b) Type of indenter: In the Vickers test, a diamond pyramid-shaped indenter is used, while in the Brinell test, a hardened steel ball indenter is used. The diamond indenter in the Vickers test allows for more precise and accurate measurements.

c) Load applied: In the Vickers test, a smaller load is applied compared to the Brinell test. The load applied in the Vickers test is typically between 1 to 120 kgf, while in the Brinell test, it is usually between 500 to 3000 kgf. The smaller load in the Vickers test allows for testing of thinner and smaller samples.

d) Duration of indentation: In the Vickers test, the indentation is made quickly and the duration is very short. In contrast, the Brinell test requires a longer duration of indentation to ensure accurate measurements.

Overall, the Vickers hardness test provides more precise and accurate measurements for harder materials, while the Brinell test is better suited for softer materials.