Shielding gas
What is nitrogen used for in welding?
Quick answer
Nitrogen is used for laser welding/cleaning shielding, stainless backing, typically at 15–25 L/min. Common with handheld lasers; cheaper backing gas for stainless root runs
Where it fits
common with handheld lasers; cheaper backing gas for stainless root runs
Australian supply notes
Common argon-family cylinder sizes: D ≈ 1,700–2,000 L, E ≈ 4,000–4,600 L, G ≈ 8,700–10,200 L free gas — but always read your cylinder label, since volumes vary by supplier and fill pressure (BOC, Supagas, Coregas). Estimate your consumption with our gas flow calculator before choosing hire vs swap.
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