Round Wire
ft/lb = .1061 ÷ ρ x D2
Where ρ = alloy density in lb/in3, and D = wire diameter in inches.
m/kg = 1273.24 ÷ ρ x D2
Where ρ = alloy density in gm/cm3, and D = wire diameter in mm.
Square or Rectangular Wire
ft/lb = .0833 ÷ ρ (w x t – .8584R2)
Where ρ = alloy density in lb/in3, w = wire length in inches, t = wire thickness in inches, and R = corner radius in inches.
m/kg = 1000 ÷ ρ (w x t – .8584R2)
Where ρ = alloy density in gm/cm3, w = wire length in mm, t = wire thickness in mm, and R = corner radius in mm.
Round Edge Flat Wire
ft/lb = .0833 ÷ ρ x w x t x Cf
Where ρ = alloy density in lb/in3, w = wire width in inches, t = wire thickness in inches, and Cf = correction factor.
m/kg = 1000 ÷ ρ x w x t x Cf
Where ρ = alloy density in gm/cm3, w = wire width in mm, t = wire thickness in mm, and Cf = correction factor.
Correction Factor (Cf)
The following chart lists the correction factor (Cf) for the area loss from a true rectangle to the round edge.
WIDTH/THICKNESS RATIO |
CORRECTION FACTOR |
1 |
.785 |
1.05 |
.805 |
1.1 |
.820 |
1.15 |
.840 |
1.2 |
.850 |
1.3 |
.865 |
1.4 |
.875 |
1.5 |
.885 |
1.6 |
.895 |
1.7 |
.905 |
1.8 |
.910 |
1.9 |
.915 |
2.0 |
.920 |
2.1 |
.925 |
|
|
WIDTH/THICKNESS RATIO |
CORRECTION FACTOR |
2.2 |
.930 |
2.3-2.4 |
.935 |
2.5-2.6 |
.940 |
2.7 |
.945 |
2.8-3.0 |
.950 |
3.1-3.3 |
.955 |
3.4-3.7 |
.960 |
3.8-4.3 |
.965 |
4.4-5.2 |
.970 |
5.3-6.2 |
.975 |
6.3-7.9 |
.980 |
8.0-9.1 |
.985 |
9.2-9.9 |
.990 |
|