OK 83.50 SMAW Type Acid-Rutile E6-UM-55 Description OK 83.50 is a hardfacing electrode for the repair welding of worn parts on agricultural equipment, forestry tools, loading machines and so on. Transformers with low open-circuit voltage can be used (> 45 volt). Welding current AC, DC+ OCV 45 V Classifications DIN 8555 E6-UM-55 Typical all weld metal composition, % C Si Mn Cr Mo 0.4 <0.6 <1.0 6.0 0.6 Typical mech. properties all weld metal Weld metal hardness, a w 50-60 HRC (preheat and interpass temperature approx. 250°C) Machinability Grinding only Abrasion resistance Very good Tempering resistance Temp°C/1h HRC 200 56 300 54 400 53 500 52 550 51 600 44 650 41 700 34
