Bare Copper Conductor ASTM Standard (CLASS B)

Our Bare Copper Conductor, manufactured in accordance with ASTM standards (Class B), is made from high-purity, high-conductivity copper. Designed for electrical and communication applications, it features a clean, uninsulated surface suitable for grounding, shielding, and overhead transmission lines. The Class B designation indicates specific dimensions, electrical properties, and manufacturing tolerances ensuring consistent quality and performance. This conductor offers excellent conductivity, durability, and ease of installation, making it ideal for a wide range of industrial and infrastructure projects.

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Bare Copper Conductor ASTM Standard (CLASS B)

Bare Copper Conductor ASTM Standard (CLASS B)

  • Shape of conductor Stranded Bare Copper
  • Sectional area 6-1000 MCM
  • Insulation N/A
  • Standard ASTM

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Bare Copper Conductor ASTM Standard (CLASS B) APPLICATION

Used for overhead electrical distribution lines, grounding electrical substations, electrical test equipment and any other electrical system, Suitable for numerous other applications.

Standard

• B-1 Hard-Drawn Copper Wire.
• B-2 Medium-Hard Copper Wire.
• B-3 Soft or Annealed Copper Wire.
• B-8 Concentric-Lay-Stranded Hard, Medium-Hard or Soft Copper Conductor.
• B-33 Tinned Conductors.
• B-787 19 Wire Combination Unilay-Stranded Soft copper wire.

Construction

Solid or Concentric stranded bare Soft or Annealed Copper Construction

Solid or Concentric stranded bare Soft or Annealed Copper Construction

Bare Copper Conductor ASTM Standard ( CLASS B) Parameter
Size  Nominal Cross
Section Area		 No./Nominal Dia.
of Wire		 Approximate
Overall
Dia.		 Approx.
Weight		 Nominal
Breaking
Load		 Nominal DC Resistance
at 20°C
AWG Cmils  mm2  No./mm mm Kg/km kN Ω/km
6 26240 13.3  7/1.56 4.67  121.0  6.0  1.3800 
4 41740 21.1  7/1.96 5.88  192.0  9.6  0.8650 
2 66360 33.6  7/2.47 7.42  305.0  14.9  0.5440 
1/0 105600 53.5  19/1.89 9.47  485.0  24.3  0.3420 
2/0 133100 67.4  19/2.13 10.60  611.0  30.3  0.2710 
4/0 211600 107.2  19/2.68 13.40  972.0  47.7  0.1710 
250 250000 126.7  37/2.09 14.60  1149.0  57.0  0.1440 
300 300000 152.0  37/2.29 16.00  1379.0  68.4  0.1200 
350 350000 177.3  37/2.47 17.30  1609.0  78.9  0.1030 
400 400000 202.7  37/2.64 18.50  1838.0  90.2  0.0900 
500 500000 253.4  37/2.95 20.70  2298.0  111.5  0.0720 
600 600000 304.0  61/2.52 22.70  2758.0  135.3  0.0600 
700 700000 354.7  61/2.72 24.50  3216.0  157.8  0.0520 
750 750000 380.0  61/2.82 25.30  3447.0  169.1  0.0480 
800 800000 405.4  61/2.91 26.20  3676.0  178.4  0.0450 
900 900000 456.0  61/3.09 27.80  4136.0  200.6  0.0400 
1000 1000000 506.7  61/3.25 29.30  4596.0  223.0  0.0360