AWS CERTIFIED AMERICAN Welding Society standard AWS A5.12M/A5.12:2009 conformance. Ensure the premium quality, give you a better welding expierence. PROFESSIONAL PACKING By checking the color of the outer packaging, you can quickly and easily distinguish the color and model of tungsten electrodes, saving your time and reducing the possibility of errors. Vacuum packing, no oxidation, achieving long time preservation. RED-2% THORIATED Color code: Red. The Thoriated electrode is a traditional outstanding welding electrode, whose arc is continuous, stable, without spreading and dispersing. As it is not easy to get a round top with thermostability, it performs well in a lifetime. BLUE-2% LANTHANATED Lanthanated electrodes are popular due to the relative ease of striking an arc and lower amperage required. They perform exceptionally well in both AC & DC applications. GREEN-PURE TUNGSTEN The original pure tungsten electrode contains at least 99.5% tungsten and delivers all of the properties classically associated with tungsten - superior conductivity, durability, and performance. No adding any rare earth oxides, the electron emission capability is the smallest, so it suits for AC welding of heavy load conditions only, such as aluminum and magnesium alloy welding. GREY-2% CERIATED Contain a minimum of 97.30% tungsten and 1.80-2.20% cerium. Ceriated electrodes can be used proficiently in AC or DC processes and perform best in DC welding at low current settings. With its excellent arc starts at low amperages, ceriated tungsten has become popular in such applications as orbital tube and pipe manufacturing, thin sheet metal work or jobs where small and delicate parts. GOLD-1.5%LANTHANATED Lanthanated electrodes are popular due to the relative ease of striking an arc and lower amperage required. They perform exceptionally well in both AC & DC applications. PURPLE-RARE EARTH BLEND Comparable to E3 Purple,Non-radioactive, replacement for traditional 2% Thoraited (Red) Tungsten electrode. Easy arc starts, good stability, wide current range, low burn-off rate. APPLICATIONSOn Sep 24, 2023 at 20:40:31 PDT, seller added the following information: