| Specification | Process Description | Category | Limits |
| AMS 2630 | Inspection, Ultrasonic, Product over 0.5 Inch (12.7mm) Thick *NOTE* NGAS ASPL approval is required when testing is performed by a secondary source other than the primary mill. | Non-Destructive Testing | Limits: None |
| 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 | Limits: None |
| AMS 2700 | Passivation Treatments for Corrosion-Resistant Steel | Chemical Processing | Limits: Limits: Limited to Method 2 only (Citric Acid) |
| AMS-STD-2154 | Inspection, Ultrasonic, Wrought Metals, Process for *NOTE* NGAS ASPL approval is required when testing is performed by a secondary source other than the primary mill. | Non-Destructive Testing | Limits: None |
| ASTM A967 | Chemical Passivation Treatments for Stainless Steel Parts | Chemical Processing | Limits: Limits: Limited to Citric Acid Solutions only. (Citric 1 – 4) |
| ASTM B594 | Ultrasonic Inspection of Aluminum-Alloy Wrought Products. *NOTE* NGAS ASPL approval is required when testing is performed by a secondary source other than the primary mill. | Non-Destructive Testing | Limits: None |
| ASTM E1417 | Standard Practice for Liquid Penetrant Testing | Non-Destructive Testing | Limits: None |
| ASTM E1444 | Standard Practice for Magnetic Particle Testing | Non-Destructive Testing | Limits: None |
| ASTM E1742 | Standard Practice for Radiographic Examination | Non-Destructive Testing | Limits: None |
| ASTM E2375 | Standard Practice for Ultrasonic Testing of Wrought Products | Non-Destructive Testing | Limits: None |