PRCI Hot Tap Hardness Model

Owned by Febin Mathews
Dec 30, 2022
1 min read

The PRCI hardness model is the predicted Vickers hardness of the weld HAZ using a 10-kg load. The hardness curve is based on the Yurioka equations which are based on Vickers hardness with a 10-kg load.

 

Is it possible to change the vickers hardness result from PRCI to the equivalent of 5 kgf load?

Below is a reference that talks about a method to convert the same hardness measurement type made at different loads.

https://www.sciencedirect.com/topics/materials-science/microhardness-testing