Gdp E309 Hot =link= 【EASY】

If your application involves elevated temperatures (>400°C) or you need deeper penetration into a rusty/oxidized carbon steel base, the higher carbon and ferrite of the "Hot" variant provide better performance. For maximum corrosion resistance (especially in acids), select 309L.

| Symptom | Likely Cause | Solution | | :--- | :--- | :--- | | | Too much dilution from carbon steel | Run a buttering layer of 309 on the carbon side first. | | Black, sticky slag | Arc length too long / Amps too low | Crank up the heat by 10 amps and push the rod closer. | | "Wagon tracks" (slag lines) | Incorrect drag angle | Keep a 15-20 degree drag angle; do not point the rod straight up. | | Magnetic Arc Blow | High amperage in a confined corner | Use AC setting (if generator allows) or break the arc with a back-step technique. | gdp e309 hot

Standard E309 rods work fine. works fast . Here is the performance delta: | | Black, sticky slag | Arc length