Atomizes a Devastator in less than a second

The gauss flayer struck the Devastator at Ulantus’ shoulder and for a moment it seemed to have no effect. There was no pressure behind the strike and the Space Marine held his ground. But then the vox was suddenly filled with screams as the Marine’s armour fizzled and then dissolved away, exposing his raw skin and muscles, which were consumed atom by atom. After less than a second, even his bones were suddenly rendered into dust.

Dawn of War: Tempest pg. 146-147