What weld porosity means
Weld porosity is gas trapped in the weld metal as it freezes, showing as pinholes on the surface or holes hidden inside the bead. It weakens the joint and is a common reason a weld fails inspection.
Also called porosity, gas pockets, wormholes.
Where it matters on a welding job
The usual causes are lost shielding gas from a draft, an empty bottle or the wrong flow, and dirt on the metal: oil, paint, rust or moisture. Grinding it out and rewelding is unpaid time, so budget for proper cleaning on old or greasy parts.
What it costs
For weld porosity, the closest koira.ai price is the welding repair cost guide, near $350 for a typical job and $210 to $480 for most. The guide shows its sources and what moves the price. The welding shop rate calculator prices a job line by line.
Work it out
- Free calculator: Welding shop rate calculator
- Cost guide: Welding repair cost
- Tools, templates and guides: Free welding resources
For welders and fabricatorsIf you do this work for a living, Koira handles the office side of it: quotes, invoices, booking, follow ups and your website, in one place.Welding shop software