Flux-cored welding wire classification

Flux-cored welding wire is categorized into seamed and seamless types based on production characteristics. Finished seamless flux-cored wire can be copper-plated, offering superior moisture resistance during storage and electrical conductivity during welding compared to seamed flux-cored wire.

Flux-cored wire is categorized based on different requirements.

By shielding, it can be divided into four types: gas shielded (CO2, Ar-rich mixed gas), self-shielded, submerged arc, and open arc.

By wire diameter, it can be divided into fine diameter (under 2.0mm) and thick diameter (over 2.0mm).

By cross-section, it can be divided into simple and complex cross-sections.

By power source, it can be divided into AC steep-drop characteristic and DC flat-characteristic power sources.

By filler material, it can be divided into slag-forming flux-cored wire (titanium oxide, calcium titanium, and calcium fluoride) and metal powder-cored flux-cored wire. Common gas-shielded flux-cored welding wires include AWS A5.29/5.28, E71T1-C(M), E81T1-K2, E81T1-NI1, E91T1-K2, E101-K3, E111T1-K3, E80C-G, E90C-G, and E110C-G (typical diameters: 1.2mm-1.6mm).
Common self-shielded flux-cored welding wires: Typical diameters: 1.6mm-3.2mm.
Common submerged arc cladding flux-cored welding wires include AWS A5.23, F71A, F8A4, F9A4, and F11-A8 (typical diameters: 2.4mm-4.0mm).