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Shielded Metal Arc Welding electrodes Forunalloyed steelAS/NZS 4855-B Classification of covered electrodes for manualmetal arc welding of non alloy and fine grain steelsE 4918 - G A U H5RHDM [ml/100g]moistureresistantcoatingThis exampleis for Kryo 1H5= max.5H10= max.10H15= max.15also meets 47J impacts atspecified temperaturesas weldedchemical composition, principle alloying element(M, N, MN, CC, etc... G= any agreed composition)type of electrode covering,welding positions & type ofcurrentmin. tensile strengthcovered electrodeSymbolMin. tensilestrength MPa43 43049 49055 55057 570Shielded Metal Arc Welding ElectrodesUnalloyed Steel*further electrode classification examples can be found in CH 10 of AS/NZS 4855-Bwww.lincolnelectric.com.au11