Allowable joint tensile stress

Allowable joint shear stress

Joint tensile stress

Joint shear stress

Strength check

σ ≤ σ A and τ≤τ A

Minimum thickness of connected parts

s min = max {s 1 , s 2 }

where:

Meaning of used variables for metric units:

S U	Joint strength in tension [MPa]
k T	Tension safety factor
S US	Joint strength in shear [MPa]
k S	Shear safety factor
F	Transferred force [N]
b	Width of connected parts [mm]
s	Thickness of connected parts [mm]

Meaning of used variables for English units:

S U	Joint strength in tension [psi]
k T	Tension safety factor
S US	Joint strength in shear [psi]
k S	Shear safety factor
F	Transferred force [lb]
b	Width of connected parts [in]
s	Thickness of connected parts [in]

Guiding values for solder joint strength

Soft solder alloys

Brazing filler metals