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Comparison of Brinnel Methods E 10 & A 833

Comparison of Brinnel Methods E 10 & A 833

Comparison of Brinnel Methods E 10 & A 833

(OP)
I'm wondering how close one would expect results to be between portable Brinnel testing using a telebrinneller or equal, in accordance with A 833, and Brinnel testing in a stationary machine using a 3000 kg load?
I realize there's more variables in play with the portable test method, but, assuming it was carried out properly, in general what would you expect?

RE: Comparison of Brinnel Methods E 10 & A 833

The way I look at is is the portable method gives an "estimation" of the hardenss.  The quality of the estimate depends a lot on how the method is used.  In your example with the telebrineller, I know from personal experience that they can give results that are very close to the real hardness but can also give results that are off by more that 25%.  Because of this, I wouldn't depend on the telebrineller for produce acceptance, only for an information device.

rp

RE: Comparison of Brinnel Methods E 10 & A 833

weldtek;
In our company when portable hardness testing is specified, it is for information only. I have seen comparable (+/- 10% variance) between field and bench hardness hardness test results, and I have seen questionable results that after reviewing the portable hardness technique there was a problem with component geometry or surface preparation.
 

RE: Comparison of Brinnel Methods E 10 & A 833

I have had success and good correlation using a King portable brinell. In some cases it is not practical to bring large samples back to the met lab for the bench Brinell.

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