Could anyone tell me why this has been rejected for Impact testing?
Material SA-516 Grade 70
10mm x 10 mm x 55mm bar
-50 f
Orientation longitudinal
Sample 1 impact strength = 47 Mils lateral expansion= 43 % shear fracture area = 50
Sample 2 impact strength = 13 Mils lateral expansion= 18 % shear fracture area = 20
Sample 3 impact strength = 24 Mils lateral expansion= 23 % shear fracture area = 20
AVRG.= 28
ASME S-5 per SA-20
And did the lab even need to report the Mils lateral expansion and % shear fracture area because in S5.4 the recorded results Shall include test soecimine orientation , size , tempature, absorbed energy value , and, if specified in the po for other than class VI plates lateral expansion and opposite the notch. The percent shear fracture shall also be recorded if specified by the po.
My PO states normalized with supplement S-5 SA-20, of course I will request that the parts be retested as the test bars were not normalized, but Im not sure why they consider these results as failures.
MDK