Common types of welding wires and their uses
ER70S-6 Carbon Steel Wire: This wire is suitable for welding carbon steel and low alloy steel, such as automobile manufacturing, metal structures and shipbuilding. It has good welding and mechanical properties and can be welded in a variety of welding positions, such as flat, angular and vertical. Common diameters are 0.8mm and 1.0mm.
ER308L Stainless Steel Wire: This wire is suitable for welding stainless steel, cast iron and low alloy steel, such as petrochemical, food processing and medical equipment. It has good corrosion resistance and mechanical properties and can be welded in a variety of welding positions. Common diameters are 0.8mm and 1.0mm.
ER4043 Aluminum Alloy Wire: This wire is suitable for welding aluminum alloys such as aircraft, railroad vehicles and ships. It has good fluidity and wettability and can be welded in various welding positions. Common diameters are 1.0mm and 1.2mm.
ENiCrFe-2 Nickel Alloy Wire: This wire is suitable for welding components in high temperature and highly corrosive environments, such as petrochemicals, aircraft engines and nuclear reactors. It has good corrosion resistance and mechanical properties and can be welded in a variety of welding positions. Common diameters are 2.4mm and 3.2mm.
For coatings, passivator coatings can help reduce oxidation and improve weld quality, flow agent coatings can help improve wettability and reduce the risk of porosity and cracking, and shielding gas coatings can help prevent oxidation and provide protection. For example, ER70S-6 wire is typically coated with a passivator, ER4043 wire is typically coated with a flow agent, and ENiCrFe-2 wire is typically coated with a shielding gas.