Stainless Steel Tube Laser Cutting: Nitrogen, Oxygen or Air, Gas Cost per Metre and Oxide-Free Edges
By John Zhao, Service Engineer, PCL Group · Updated 2026-10-29 Short answer Nitrogen gives a bright, oxide-free edge that welds without grinding; oxygen is faster on thick walls but leaves a dark oxide; air sits in between at the lowest gas cost. Nitrogen flow is set by nozzle size and pressure: a 2.0 mm nozzle […]
Steel Channel Laser Cutting: C Channel and UPN Sizes, Laser Power, Clamping and Machine Choice
