What color is associated with unspecified alloys in welding electrodes?

The color gray is associated with unspecified alloys in welding electrodes. This color coding system is used to help welders easily identify the composition and intended use of various electrodes. Specifically, gray indicates that the electrode is designed to cater to different materials that do not fall under a specific classification. This flexibility allows welders to utilize these electrodes in various applications where the exact alloy or material is not specifically defined, making them a versatile option in welding practices.

Other colors, such as black, gold, and blue, are typically used to indicate specific types of electrodes or materials, which means they carry distinct properties and should be used accordingly. Gray serves as an identifier for those situations where the distinct properties of the material are less important, or where a general-purpose electrode is acceptable.