What material is commonly used to make welding nozzles?

The commonly used materials for welding nozzles are ceramic and glass due to their excellent heat resistance and durability. Ceramic materials can withstand the high temperatures generated during the welding process without deforming, while glass can provide a clear view of the welding arc, allowing for better visibility and precision. These materials help ensure that the nozzle can endure the thermal stresses and protect the welding equipment while maintaining performance.

While other materials like plastic, metal, and rubber have their own applications within different types of nozzles or welding tools, they do not offer the same combination of heat resistance and visibility that ceramic and glass provide specifically for GTAW applications.