Quickly calculate the strength of your weld joints, including fillet and butt welds. Our free online Welding Calculator helps engineers and fabricators ensure structural integrity and optimize designs for various load types. Ideal for precise and reliable welding computations.
Formula:
For Fillet Welds (Shear Strength), the nominal strength (Rn) is commonly calculated as:
Rn = 0.707 × h × Lw × (0.60 × FEXX)
- Rn = Nominal Strength of Weld Joint (kips or kN)
- h = Leg Size of Fillet Weld (in or mm)
- Lw = Total Effective Length of Weld (in or mm)
- FEXX = Specified Minimum Tensile Strength of Weld Electrode (e.g., 70 ksi for E70XX, 485 MPa for E70XX)
Note: This formula applies to fillet welds in shear based on AISC recommendations. For full penetration butt welds, the strength typically matches the base metal strength.