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International color coating chart. 4. Standards. 3 b. Determinants of tungsten performance. 4. 1. manufacturing variables a. oxide distribution and size b. grain16 Dec 2015 Many of our customers are often looking for a good reference for which electrode type to choose while welding different metals. Although 20 Apr 2012 Colour code = White. Advantages. • AC welding. • No dropping of Tungsten particles into the weld pool. Disadvantages. • Poorer ignition properties than pure In the past, pure tungsten was the only choice for AC TIG welding. Today, industry experts recommend against pure tungsten in favor of the new . Color Code. 27 Apr 2012 Figuring out the best tungsten to use when TIG welding aluminum can be a lot harder than you think. Find out what works and what doesn't Th: Thorium; Zr: Zirconium; La: Lanthanum oxide; Ce: Ceroxide. Colour codes for tungsten electrodes. Overview of tungsten electrode colour coding in PDF This Guidebook for the Proper Selection and Preparation of Tungsten .. International Color Coding Chart: Each stick of tungsten has a color code applied to. 7 Mar 2006 Zirconiated (Color Code: Brown) Zirconiated tungsten electrodes (AWS classification EWZr-1) contain a minimum of 99.10 percent tungsten and 0.15 to 0.40 percent zirconium. A zirconiated tungsten electrode produces an extremely stable arc and resists tungsten spitting.