IW-E71T-GS The IW-E71T-GS is a rutile-type, self-shielded (gasless) flux-cored welding wire designed for the single-pass welding of unalloyed and low-alloy carbon steels. Since it requires no external shielding gas, it is exceptionally ideal for outdoor, windy job sites, field maintenance, and DIY/home workshop applications. It features easy slag removal, low spatter, and excellent arc stability in all welding positions.Certification: CETechnical data: Classification EN ISO 17632-A-T4TZVNo1 AWS standard AWS A5.20: E71T-GS Tensile strength ? 485 MPa Yield strength ? 400 MPa Elongation ? 20%Welding current: DC (-)Key features and benefits: No Shielding Gas Required: Provides maximum portability; can be used without external gas cylinders or regulators. Excellent Outdoor Performance: The protective atmosphere is generated internally by the flux core, ensuring porous-free welds even in windy conditions. Easy Slag Detachability: Forms a thin slag layer that is extremely easy to remove after welding. Meaning of "GS" (General Single-pass): This international classification specifies that the wire is engineered specifically for general, single-pass welding applications. Due to the special formulation of the flux core, multi-pass (multi-layer) welding is not recommended.