A Simple Visual Indicator of Weld Quality Titanium welding demands exceptional shielding. Even slight oxygen contamination during welding can change the weld colour and significantly affect mechanical properties, corrosion resistance, and fatigue performance. The attached Titanium Weld Colour Inspection Chart provides a quick visual reference for assessing post-weld shielding quality. Typical colour interpretation: Glossy Silver – Excellent shielding, acceptable
- Light Straw – Acceptable for most applications
- Dark Straw / Gold – Generally acceptable, evaluate for critical aerospace applications
- Purple / Blue / Yellow – Indicates increasing oxidation due to inadequate shielding or back purge; evaluation required
- Gray / White / Powdery – Severe oxidation and shielding failure; reject
- Brushed Surface – Visual colour has been removed, making inspection unreliable; further evaluation is required.
Although weld colour is an excellent first-line inspection tool, final acceptance should always be based on applicable standards, customer specifications, and qualified welding procedures such as AWS D17.1, AMS specifications, or project-specific requirements
Remember: Good shielding gas coverage, proper trailing shields, effective back purging, and clean welding practices are essential for producing high-quality titanium welds.
Post time: Oct-19-2026