At the top 60 kW configuration, published capability is up to 5 in (127 mm) in steel, up to 3.5 in (89 mm) in stainless, and up to 2.5 in (64 mm) in aluminum.
Two cautions on those numbers. They are maximums for the highest power level in the range, not a general figure, and a lower-power machine cuts proportionally thinner. Maximum thickness and production-speed thickness are also different numbers, and the second one usually matters more to a shop that has to hit a delivery date.
Ask us to confirm the figures against the documentation for the specific configuration you are considering.