A 55 Nickel- 45 Iron Alloyed Electrode For Fully Machinable Crackresistant Welds On A Wide Range Of Cast Irons
BM-50
CLASSIFICATION
AWS A5.15 ENiFe-CI | EN ISO 1071 EC NiFe-CI | JIS Z 3252 DFC NiFe
PRODUCT DESCRIPTION
The design emphasis of the chemically basic flux assures the metallurgical integrity of the weld metal fumes. The high graphite content of the flux is expelled from the molten metal, compensating for the compression welding stresses thus preventing weld metal cracking. Special nickel-iron alloy core wire used gives extra heat-resistability of welding electrode.
WELDING FEATURES OF THE ELECTRODE
The arc is stable both AC and DC, but is very soft, thus minimising dilution. Weld beads are smooth, bright and evenly rippled. The slag is fairly fluid but relatively quick freezing, thus allowing smooth blends when edges are involved. The slag is readily controlable, thus making positional welding very easy, plus the slag is easily detachable.
APPLICATIONS AND MATERIALS TO BE WELDED
The NiFe weld metals produce higher strength welds than the pure nickel types and are thus the preferred choice for alloyed, nodular and spheroidal cast irons. Typical grades being ASTM A602, A47, A338, A220. Additional applications include welding of all grades of cast iron to mild carbon
and low alloy steels.
WELDING AMPERAGE AC and DC
OTHER DATA
Electrodes that have become damp should be re-dried at 110oC for 1 hour
