Wire Facts: Wire Length

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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

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