NIKKO STEEL HV-800 HARD FACING ELECTRODES

The flux's emphasis is on ensuring a slag solidification range that allows the chrome carbide particles to be evenly distributed within the austenitic alloy matrix, ensuring complete uniformity of hardness. The balanced lime rutile flux contains the appropriate alloying elements and is bound with a blend of silicates, ensuring both coating strength and resistance to moisture absorption.

The electrode welds with a smooth, stable arc and easily strikes and re-strikes. The weld appearance is bright, almost polished, and smoothly contoured. Slag detachability is excellent. The metal recovery is about 170% with respect to core wire weights, thus reducing welding time. The weld deposits are non-machinable.

Suitable for surfacing a wide range of steels, including 13Mn types. Because thermal contraction stresses can cause stress-relieving cross-cracking, buildups should be limited to three layers, preferably two when restraint is high. The deposit has excellent resistance to abrasion from minerals, sand, and sludges, which contributes to its extensive use in the earthmoving, cement, dredging, and steel industries. For buildups on carbon and low alloy steels or 13Mn steel, NS-307 should be used as a buffer layer.