Aerospace Spot Weld Shear Strength: steel_nickel_cobalt
Design-allowable shear load per spot (lbs) for resistance spot welds per MIL-HDBK-5J Section 8.2.2.3 and MIL-W-6858. Indexed by material family (aluminum alloy, steel/nickel/cobalt alloy, magnesium alloy, titanium alloy), parent metal Ftu range (ksi), and sheet thickness (in). Tensile allowable is 25% of shear strength. Covers thicknesses 0.020–0.160 in. No filler metal — allowable is empirical load-per-spot based on sheet thickness and parent metal ultimate tensile strength.
| material family | record id | design shear strength lbs (lbf) | material ftu range ksi | sheet thickness in (in) | tensile allowable lbs (lbf) | tensile allowable note | weld spec |
|---|---|---|---|---|---|---|---|
| steel_nickel_cobalt | steel_ftu_150to185_t0025 | 260 | 150_to_185 | 0.025 | 65 | 25% of shear strength | MIL-W-6858 |
| steel_nickel_cobalt | steel_ftu_150to185_t0032 | 360 | 150_to_185 | 0.032 | 90 | 25% of shear strength | MIL-W-6858 |
| steel_nickel_cobalt | steel_ftu_150to185_t0040 | 480 | 150_to_185 | 0.04 | 120 | 25% of shear strength | MIL-W-6858 |
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