9018M is an all-position, low-hydrogen, iron-powder electrode containing manganese, molybdenum, and nickel. 9018M is designed for welding low alloy, high tensile, quenched, and tempered steels such as T1, HY80, and HY90. Weld deposits have excellent impact properties and are X-ray quality. PREHEATING AND POSTHEATING Depending upon the thickness and hardening characteristics of the workpiece, preheating at a temperature between 140-220° F is recommended. TYPICAL APPLICATIONS 9018M is commonly used to make attachment welds on steels in the 90.000 psi tensile strength range. Typical applications would involve pressure vessels, bridges, machinery, and penstocks. Base metals would include ASTM A225 Gr. B, A235 Gr. G, A288 class 2, A291 class 1, 2 and many others. 10 LB BOX