When welding stainless steel, what is the desired color for the welds?

When welding stainless steel, achieving a light gold color at the welds is generally desired. This hue typically indicates a proper balance of heat input and is reflective of a well-controlled welding process. Good heat management during welding is crucial, as excessive heat can lead to discoloration, such as dark blue or even matte black, both of which signify overheating and potential issues like embrittlement or loss of corrosion resistance.

The light gold color suggests that the stainless steel has been adequately fused without deteriorating its protective oxide layer, which is essential for maintaining the material's corrosion resistance. Therefore, when looking at the welds, a light gold finish assures the welder that the appropriate parameters were used during the welding process, promoting optimal performance and longevity of the weld.