Mill Test Reports

Certified mill test reports typically accompany each shipment of reinforcing bars. The mill reports certify that the reinforcing bar conforms to the project specifications and reveals the chemical composition of the reinforcing bar and mechanical properties. Reinforcing bars typically come in two primary grades: Grade 60, which has a minimum yield strength of 60,000 psi, and Grade 75, which has a yield strength of 75,000 psi. The metric equivalents for these are Grade 420, which has an equivalent yield strength of 420 MPa (megapascals) and Grade 520, which has an equivalent yield strength of 520 MPa.