Final answer:
1% lanthanated electrodes are color coded to help identify them for use in high-temperature applications like the GTAW process. They are made from lanthanides, which are inner transition metals used in various technologies and alloys. The industry standard typically assigns the color blue to these electrodes.
Step-by-step explanation:
1% lanthanated electrodes for use with the GTAW process are color coded. These electrodes are made from lanthanides, which are inner transition metals found at the top of the bottom two rows of the periodic table. Lanthanides, including lanthanum itself, span from element 57 (lanthanum) through element 71 (lutetium).
Lanthanides possess unique properties and are widely used in various applications. They can be found in optical devices like night vision goggles, in petroleum refining processes, and as components in specialized alloys. Lanthanated electrodes are used in the GTAW (Gas Tungsten Arc Welding) process for their ability to handle high-temperature applications such as furnace tubes, lighting tubes, and melting crucibles.
The color-coding system for these electrodes helps welders and technicians rapidly identify the correct electrode for their specific welding requirements. Although not directly specified in the materials provided, industry standards typically assign the color blue to the 1% lanthanated electrodes, aligning with their classification in the periodic table.