Weld Porosity Risk Calculator
An educational tool to assess the risk of porosity defects in your MIG/TIG welds based on common contributing factors.
Welding Conditions
Select the conditions of your welding setup to see a real-time risk analysis.
The Enemy Within: Understanding Porosity
Porosity is one of the most common welding defects. It appears as small, gas-filled bubbles or pores within the weld metal. These pores act as stress concentrators and can severely weaken the weld, making it unacceptable for critical applications. Porosity is always caused by gas being trapped in the weld pool as it solidifies. The gas can come from two main sources: inadequate shielding from the atmosphere, or from contaminants on the base metal itself.