OK 84.84 SMAW Type Basic E10-UM-60-GP Description OK 84.84 is a hardfacing electrode depositing a weld metal with a high volume fraction of fine carbides in a martensitic matrix. It is designed for theprotection of components subjected to severe abrasive wear. Typical applications: earth-drilling equipment, hammers, scrapers and knives, shovel buckets and shovel teeth. Recommendation: Preheating is normally not required, except for heavier sections where preheating to 200°C may be beneficial. Stringer beads are recommended. Optimum hardness is obtained in the first layer due to low dilution with the parent material. Welding currentClassifications DIN 8555 E10-UM-60-GP Typical all weld metal composition, % C Si Cr V Ti 3.0 2.0 6.3 5.0 4.8 Typical mech. properties all weld metal Weld metal hardness, a w 60-62 HRC (deposited on mild steel, no preheat): 1st layer: 62 HRC Machinability Grinding only Impact resistance Very good Abrasion resistance Excellent AC, DC+ - OCV 45 V
