Le Welding Residual Stress Calculator helps estimate relative residual stress risk based on welding heat input, material properties, plate thickness, joint type, weld sequence, and restraint level. Use it as a preliminary reference to compare welding conditions and consider ways to manage residual stress. Actual results vary with the material, joint design, and fabrication process, so engineering review may be needed for precise analysis.

All fields are required unless marked optional. Choose units next to each value.

Calculation mode

Rates residual stress risk as Low, Moderate or High using a configurable Residual Stress Index (0–100).

Process & material

Use the higher of base and weld metal yield if known.

Joint geometry

Heat input

HI (kJ/mm) = V × I × k × 60 ÷ (1000 × travel speed in mm/min)

Procedure & restraint
Thermal treatment

Leave blank if no preheat is applied.

Model assumptions & editable coefficients

These coefficients drive the Residual Stress Index, the stress-range screening and the practical-range warnings. Change them to match your company practice. Changes apply to the next calculation (and update a displayed result immediately).