... M01, M02, M0W20, M0W50, TZM, MOTi0.5, MoLa10, JM01. The essentials of Molybdenum: Symbol Mo Atomic number 42 Atomic weight 95.94 ... M01, M02, M0W20, M0W50, TZM, MOTi0.5, MoLa10, JM01. The essentials of Molybdenum: Symbol Mo Atomic number 42 Atomic weight 95.94 ...