Understanding TIG Welding Tungsten Types and Sizes

Introduction to TIG Welding Tungsten

Tungsten Inert Gas (TIG) welding is renowned for producing high-quality welds in various materials. A crucial component in this process is the tungsten electrode. Understanding the different tungsten types and sizes is vital for achieving optimal results. Tungsten electrodes are central to the TIG welding process, offering precise heat control and excellent arc stability. In this article, we'll explore the various types, their applications, and how to choose the right size for your welding needs.

Types of Tungsten Electrodes

There are several types of tungsten electrodes, each designed for specific applications. The choice of tungsten significantly affects the welding performance and quality. Let's examine the most common varieties:

• Thoriated Tungsten (Red): Known for excellent arc stability and ease of use, thoriated tungsten is ideal for DC welding. However, it is slightly radioactive, requiring careful handling and proper ventilation during grinding.
• Ceriated Tungsten (Orange): These electrodes offer superior arc starts and are well-suited for AC and DC welding. Their versatility makes them popular among welders handling a range of materials.
• Lanthanated Tungsten (Gold): With enhanced arc stability and longevity, lanthanated tungsten is suitable for AC welding applications.
• Pure Tungsten (Green): Primarily used for welding aluminum, pure tungsten provides stable arcs and is best used with AC welding machines.
• Zirconiated Tungsten (Brown): Known for minimizing tungsten contamination, this type is excellent for welding aluminum and magnesium alloys utilizing AC welding.