1 ARCALOY® Stainless Steel Covered Electrode Coatings Coating Types...Factors such as coating type and core wire analysis can affect the corrosion resistance and mechanical properties of the weld metals as well as the equipment that must be used, position of welding, radiographic standards, bead shape required and the total economics of making the joint. Each of the three coating types has its own area of application. Lime...coatings, also known as lime fluorspar or basic, are generally associated with the suffix -15 designation. They give the cleanest weld metal, which is usually the lowest oxygen and inclusions and are more resistant to moisture and porosity. The weld metal tends to be tougher, more ductile, more crack resistant and have higher corrosion resistance. They also have good all-position characteristics and are often chosen for site work. They are normally usable only with direct current and should be the choice of the most demanding applications. AC-DC...coatings can be used with alternating or direct current and have the suffix -16. The major component is rutile, also known an titania, with some limestone which is why the coating type is sometimes referred to as basic-rutile. These AC-DC electrodes are the most popular type, and have the following characteristics:  excellent starting properties are obtained with all types of AC welding equipment. The arc is stable, smooth, with fine spray weld metal transfer and the bead is uniform, flat or slightly concave with straight-line feathered edges. Penetration is complete and the weld metal is free from porosity. Slag is easily and completely removed without secondary film which means less cleaning, grinding and polishing time. Arcaloy AC-DC electrodes give good out-of-position characteristics. The mechanical properties of AC-DC weld metals are similar to weld metal from lime coated electrodes except it can be stronger with good ductility. Plus...coatings are also titania based, but in addition, contain a high proportion of silicates and other acid components. These electrodes are very easy to use on AC as well as DC and have the suffix -17. Arcaloy Plus coated electrodes were developed for application where the weld bead must be smooth and blend into the base metal to minimize grinding where a crevice can cause corrosion. The weld bead is concave and has minimal ripple. These Arcaloy Plus electrodes give a smooth spray transfer and produce very low levels of spatter. The acid slag tends to give the lowest carbon levels and higher silicon levels. This can be ideal for corrosion resistance, but for critical mechanical applications, the use of a lime or even an AC-DC coating is to be preferred.
Electrodes
Covered
Stainless
Steel
Products
Solid Wire
& Rod
Products
ESAB
TIG & MIG
Wires
Cored
Wire
Products
Submerged
Arc
Products
Hard-
surfacing
Products
Calculations
Filler Metals
ASTM
Steels
Conversion
Tables
Arcaloy SS
Electrode Coat.
Arcaloy
Bare Wires
Arcaloy Metal
Core Wires
Nickel-Arc/
Nicore Cast Iron
Shield-Bright
Gas/Flux Cored
Core-Bright
Cored Wires