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Bare Copper Tinned

Solid soft tinned copper wires are used primarily in applications involving current flow, corrosion resistance, or the need to solder the wire to some component. The addition of a tin coating facilitates the soldering process with only a small price differential over bare copper. A tin coating is also desirable in applications where operating temperatures exceed 100ºC up to 150ºC. At such temperatures the corrosion resistance of bare copper declines and the tin coating acts to protect the surface of the bare copper. The standard minimum thickness of tin coating is 40 micro-inches.

Standards & Specifications

  • ASTM B33-81
  • Bare conductor prior to coating meets ASTM B-1-81, B2-82, or B3-74
  • ARRA 2009 Section 1605 “Buy American” Compliant
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Wire Size & Specs

ConductorOverall Diameter Inches
Size (AWG) Stranding Individual Strand
Size
Nominal Minimum Maximum Max Resistance Approx Net Wt./MFT
Conductor
Size (AWG)
2
Stranding
Solid
Individual Strand Size
0.2576
Overall Diameter Inches
Nominal
0.2576
Minimun
0.255
Maximum
0.2653
Maximum Resistance
0.1641
Approx Net Wt./MFT
200.9
Conductor
Size (AWG)
2/0
Stranding
19
Individual Strand Size
0.0837
Overall Diameter Inches
Nominal
0.418
Minimun
0.4138
Maximum
0.4305
Maximum Resistance
0.043
Approx Net Wt./MFT
410.9
Conductor
Size (AWG)
4/0
Stranding
19
Individual Strand Size
0.1147
Overall Diameter Inches
Nominal
0.528
Minimun
0.5227
Maximum
0.5438
Maximum Resistance
0.0524
Approx Net Wt./MFT
653.3

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