Different Color Codes of Tungsten Electrodes
Tungsten electrode color codes: what do they mean for welding?
Tungsten electrode color codes (tip color marking) are important identifiers used to distinguish material types, electron emission performance, and welding applications. Different colors correspond to different doping elements and welding characteristics, making them suitable for different current types, base materials, and welding conditions. In Tungsten Inert Gas (TIG) welding, welders can quickly identify electrode type and usage by color without checking the full grade designation.
Tungsten electrode color systems follow ISO 6848 and AWS A5.12 standards. Color coding is generally consistent across manufacturers and is used for fast selection and on-site identification.
Color Codes and Applications of CTIA’s Tungsten Electrode
Color codes and applications of CTIA’s tungsten electrode are shown in picture as follows:
How to Select CTIA’s Tungsten Electrode by Welding Requirements?
(1) DC welding for steel, stainless steel, titanium, and copper: grey (2% ceriated tungsten) or sky blue (2% lanthanated tungsten) is recommended. Both are non-radioactive, offer stable arc starting, and long service life.
(2) AC welding for aluminum and magnesium alloys: green (pure tungsten) or white (zirconiated tungsten) is recommended. Both maintain stable tip shape under alternating current conditions.
(3) High load or thick plate welding: red (2% thoriated tungsten) or violet (3% thoriated tungsten) can be used, or gold/blue (1.5%-2% lanthanated tungsten) as safer alternatives.
Although thoriated tungsten electrode offers excellent performance, it contains naturally radioactive thorium-232. Grinding dust poses internal radiation risks. Many countries restrict its civilian use, and lanthanated or ceriated alternatives are recommended.
Drawing upon over 30 years of expertise in tungsten electrode manufacturing, CTIA GROUP (CTIA) provides a full range of color-coded tungsten electrodes including pure tungsten, lanthanated, ceriated, zirconiated, thoriated, and yttriated types. Based on welding current, base material, and process requirements, CTIA offers customized solutions for diameter, length, tip geometry, and material grade, supporting TIG welding, plasma arc welding, and automated welding systems.
For any inquiry, please contact tungsten electrode manufacturer: CTIA GROUP
Email: sales@chinatungsten.com
Tel: 0086 592 5129696 / 0086 592 5129595
Website: www.tungsten.com.cn
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