b'(ATT) testing were developed and applied for the hotcell environment of the HFEF which are shown in Figures 1 and 2, respectively. The RHT tests were coupled with finite element modeling to derive apparent yield stress and ultimate tensile stress. Results from testing 321 stainless steel and Zircaloy-4 showed consistent and repeatable performance of these test methods to those described in literature. Commissioning tests were performed on Zr-4 coated with Cr deposited by either physical vapor deposition (PVD) or cold sprayed (CS), which were provided by Dr. Martin eveek (Czech Technical University) and Prof. Kumar Sridharan (University of Wisconsin-Madison). The results showed that the application of either PVD or CS chrome coatings with small (micrometer scale) thicknesses do not meaningfully affect the material properties in the unirradiated state. Both ATT and RHT tests were then demonstrated using irradiated Zircaloy-4 cladding material from the ATF-2 irradiations. Figure 3 shows the results of one of the RHT tests on the irradiated Zr-4 from the baseline ATF-2 rods. Figure 2. Axial Tension Test (ATT) test trainIrradiated samples are milled in cell installed in the remote load frame in the HFEFusing a sample preparation method hot cells. The left side of the figure shows an ATTthat was shown not to have an impact sample milled in cell before testing. on the test results, giving confidence that the sample preparation and testing methods can next be used to investigate the apparent yield stress and ultimate tensile stress of irradiated coated cladding materials.28 2021|AFC ACCOMPLISHMENTS'