b'remarkably stable at high tempera-tures. The creep properties of OFRAC were obtained from strain rate jump tests at temperatures ranging fromFigure 3. Optical images of the 550C to 800C and were comparedOFRAC thin wall tube and cross-to data for HT-9 (Figure 2b), whichsection of the tube (inset) is a 12Cr tempered martensitic steel that was developed for fuel clad-ding and other components in fast reactors. The comparison shows that creep performance of OFRAC is supe-rior to HT-9 since the test tempera-ture required to induce a given creep rate at the same applied stress was ~300 MPa higher at 600C.A significant achievement was fabrica-tion of a thin wall tube of OFRAC by pilger-rolling at room temperature in collaboration with Nippon Nuclear Fuel Development Co., Ltd (NFD), Japan (Figure 3). No cracks formed in the OFRAC tube after 84% reduction in wall thickness and 790% increase in length. The final OFRAC tube was 1,780 mm long, 8.51 mm outside diameter and 0.51 mm wall thick-ness, indicating cold-pilger is a viable method for producing tubing.2019|AFC ACCOMPLISHMENTS 189'