| AMS 2631 | Ultrasonic Inspection Titanium and Titanium Alloy Bar and Relief *NOTE* NGAS ASPL approval is required when testing is performed by a secondary source other than the primary mill. | Non-Destructive Testing |
| Supercedes: None | Superceded By: None |
| Number | Name | State | Country |
| 90075837 | Element Materials Technology Middleburg Heights | OH | United States |
| 90077800 | Mistras Group, Inc. Ohio | OH | United States |
| 90051777 | Mitchell Laboratories Inc | CA | United States |
| 90077007 | ND Testing Inc. | CA | United States |
| 90055777 | Weber Metals Inc. | CA | United States |