Mechanical & Civil Engineering
Fillet Weld Throat Thickness & Allowable Shear Calculator
Calculate fillet weld effective throat thickness and allowable shear load per unit length.
Your inputs
Change any value to update the result instantly.
Allowable shear load
42,420 N
Effective throat
4.242 mm
Weld length
100 mm
Allowable stress
100 MPa
What this calculator does
Fillet Weld Throat Thickness & Allowable Shear Calculator: Applies the standard shop-floor or joint-design relationship so the force, speed, allowance or strength can be worked out from the process inputs.
What your result means
The headline figure is the process setting or joint strength implied by your inputs. Treat it as a starting point to validate against the tool maker's data and a trial part.
Formula and working
a = 0.707 × leg; P_allow = a × L × τ_allow
- 1
Collect the inputs
Fillet leg size = 6 mm; Weld length = 100 mm; Allowable shear stress = 100 MPa
- 2
Apply the formula
a = 0.707 × leg; P_allow = a × L × τ_allow
- 3
Result
Allowable shear load = 42,420 N
Frequently asked questions
Symbols and assumptions
- leg
- Fillet leg size (mm)
- length
- Weld length (mm)
- allowShear
- Allowable shear stress (MPa)
- • Nominal tooling, material and process conditions are assumed; machine, tool-wear and lubrication effects vary in practice.
- • Recommended cutting data always sits inside the tool maker's published envelope, which takes priority.
Sources and review
Reviewed 2026-09-22 · Next review 2027-09-22
- • This is an educational estimate for learning and checking, not a design deliverable.
- • Real design must follow the governing code or standard for your jurisdiction and be reviewed and signed off by a qualified engineer.
- • Safety factors, load combinations and material certification are the responsibility of the designer, not of this page.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Report a mistake or request an improvement
Tell us if a formula, unit, explanation, or result needs attention. Your message will include this calculator’s name and page.
Related calculators
Butt Weld Tensile & Fatigue Strength Calculator
Estimate full-penetration butt weld tensile capacity and fatigue-allowable stress range.
Bolt Preload & Tightening Torque Calculator
Calculate required tightening torque for a target bolt preload using the torque coefficient method.
Bolted Joint Separation Safety Margin Calculator
Estimate the safety margin against joint separation for a bolted connection under tensile/shear load.
Deep Drawing Blank Diameter & Draw Ratio Calculator
Calculate the required blank diameter and check the limiting draw ratio for a deep drawing operation.
Drilling Thrust Force, Torque & Motor Power Calculator
Estimate drilling thrust force, torque, and required motor power for a drilling operation.
Milling SFM & Chip Load Calculator
Calculate spindle speed and table feed for a milling operation from surface footage and chip load.