AWS A5.12 is a specification for tungsten electrodes developed by the American Welding Society that specifically covers the requirements for tungsten electrode materials, classifications, chemical composition, physical properties, and identification for use in argon arc welding (TIG welding). According to this standard, tungsten electrodes are defined as those used in non-melting welding electrodes, typically made of high-purity tungsten or tungsten alloys doped with specific rare earth or radioactive elements, with high melting points, good conductivity, and thermal stability.
AWS A5.12 classifies tungsten electrodes based on the type and content of doped elements, dividing them into several main categories, such as pure tungsten (EWTh-1), thorium tungsten (EWTh-2), cerium tungsten (EWCe-2), lanthanum tungsten (EWLa-1), zirconium tungsten (EWZr-1), etc., each type has a clear chemical composition range and performance indicators. The standard also specifies the dimensional tolerances, logo colors, and safe use recommendations of the electrodes to ensure the consistency and reliability of the tungsten electrode during the welding process.
By following the AWS A5.12 standard, manufacturers and users can ensure that the selected tungsten electrode meets industry specifications, resulting in consistent weld quality and excellent arc performance.
More details of tungsten electrodes, please visit website: http://tungsten.com.cn/tungsten-electrodes.html
Please contact CHINATUNGSTEN for inquiry and order of tungsten needles:
Email: sales@chinatungsten.com
Tel.: +86 592 5129595
