When selecting a carbon steel welding wire like ER70S-6, a key decision is choosing between traditional copper-coated wire and the newer copper-free alternative. There's no outright "best" choice—only the right one for your specific application. Let's break it down!

Solid wires are simple metal alloys. Their main enemy is surface rust. Plastic shrink film provides an effective, low-cost moisture barrier that's perfect for storage and transport.Flux-cored welding wire contains special powder inside!This powder is hygroscopic – meaning it actively absorbs moistur

Main Causes of Physical Damage to Welding Wire Spools. Physical Impact & MishandlingThis is the most direct and common cause of physical damage.Dropping: During transportation, handling, or storage, if the wire spool is dropped, especially from a height, it can easily cause the plastic flanges (sid

The answer is: No, ER70S-6 wire is not fully copper. It is a mild steel wire with a thin copper coating.Here’s a detailed breakdown:1. The Core: Steel AlloyThe vast majority of the wire's mass (over 98%) is a steel alloy. The "ER70S-6" classification tells us exactly what this steel is made of:ER: S