So we received the test results back on the re-testing and the parts passed. We tested two sets of specimens and both resulted with nearly identical results. Our supplier has now conceded that there was a testing anomaly despite their previous insistence that we needed to pay for re-processing...
There were two specimens tested from the same end of (1) part in the lot. We are currently running a second set of tests to validate the first test. Test results are due Monday (1/27/20).
Good question and I should have noted this earlier. The engineering drawing identifies a specific location and orientation at the end of the part for the coupons. The coupons were taken from the same location on both lots.
The extrusions and machining are the same.
The extrusion for both lots were extruded at the same time in a single lot.
The extrusions were made and machined in a controlled process. The extrusion as received from the mill includes rolled lot number marking and this was verified prior to...
Hello,
I’m new to this forum and have an issue with parts failing tensile strength tests that I’m hoping someone can help me with.
We have two of lots of parts made from 7149-T73511 extruded bar stock that have been rough machined and then sent out to be annealed, formed and heat treated back...
