As far as I can see it is the same material, only different shapes of the material:
UNS N07718 (INCONEL 718)
Sheet/Plate: AMS 5596, AMS 5597, ASTM B670, ASME SB670
Round Bar/Wire: AMS 5662, AMS 5663, AMS 5664, ASTM B637, ASME SB637, AMS 5832, AMS 5914, AMS 5962
Weld Wire: AWS 5.14 ERNiFeCr-2
Pipe & Tube: AMS 5589, AMS 5590
DIN: 2.4668