K
Klutz
What do you do when you have two different labs telling you two different things? I had some samples sent to a metrology lab that I then sent to another lab for verification of the results.
The test was to look at effective case hardness (measure with HV.5 and convert to HRC). Lab #2 measured and reported on Lab #1's imprints and took new readings on areas that failed. The labs are in agreement that the parts are not to specification, but I am getting different values of results.
I understand that if the heat treat was bad, different areas will have varied hardness readings, but the measuring prior indents should be the same, not 7.7 HRC different.
I am at a loss as to what to do next. Any advice would be greatly appreciated.
The test was to look at effective case hardness (measure with HV.5 and convert to HRC). Lab #2 measured and reported on Lab #1's imprints and took new readings on areas that failed. The labs are in agreement that the parts are not to specification, but I am getting different values of results.
I understand that if the heat treat was bad, different areas will have varied hardness readings, but the measuring prior indents should be the same, not 7.7 HRC different.
I am at a loss as to what to do next. Any advice would be greatly appreciated.