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eng.weld-strength Calculator
Calculates fillet weld throat size, capacity, and factor of safety from applied force, weld length, and electrode strength. Fillet weld throat = 0.707 × leg size — the effective throat area determines weld capacity from the electrode's nominal strength.
Inputs
Weld Length Mm
Linear measurement. Ensure consistent units: 1 m = 1,000 mm = 3.281 ft.
Throat Mm
Reference formula or conversion factor shown for context.
Shear Strength Mpa
Reference formula or conversion factor shown for context.
Load N
Applied force or weight (N or kN). Divide into dead load (permanent) and live load (variable — people, wind, etc.).
Results
weld capacity (N)
Sample size or count used in the calculation.
safety factor
A dimensionless multiplier applied in the calculation.
adequate?
Whether the computed capacity, strength, or resource meets the minimum requirement.
shear stress (MPa)
Internal force per unit area (Pa or MPa). Must stay below yield strength in service. Beyond yield: permanent deformation. Beyond tensile strength: fracture.