#1 Gray provides strong contrast on most metal surfaces during dry method mag particle testing in visible light. It is ready-to-use for visible light flaw detection of surface and slightly subsurface discontinuities in ferrous metals.
It can be used in a powder blower or shaken from a bottle during magnetization, and blown off while current is still being applied. On material with a high magnetic retentivity, indications can still be formed after the current has been turned off.
StandardsAMS 3040, ASME, ASTM E1444, ASTM E709, NAVSEA 250-1500-1, NAVSEA T9074-AS-GIB-010/271.
