Rapid Macrocell Tests of 2304 and XM-28 Reinforcing Bars

The corrosion resistance of 2304 and XM-28 stainless steel bars, produced by a single mill and supplied by a single supplier, was evaluated using the rapid macrocell test outlined in Annexes A1 and A2 of ASTM A955-12. Bars were tested both before and after undergoing mechanical straightening. Based on the test results, the stainless steel bars satisfy the requirements of ASTM A955-12. The straightening process allowed corrosion to initiate on the bars, but had limited to no effect on the macrocell corrosion rate