Square copper braids

Compact braided square and rectangular copper flexibles.

Applications

  • Carbon brushes industry
  • Connection technology
  • Switches
  • Aviation industry

Particular benefits for our customers

  • Less space required in comparison to round copper braids
  • Precise positioning owing to square or rectangular shape,
    which allows for failure-free and fully automated downstream manufacture
  • Very good Flex life
  • Absolute free from twist
  • Compact cutting surface
  • Very high degree of dimensional accuracy
  • Sustained precision of welded joints
  • Very long lifetime

Manufacturing range

  • Materials: Cu-ETP1 and Cu-OF1,
    Histral® alloys upon request
  • Coating: bare, tin-plated and silver-plated
  • Single-wire diameter: ranging from Ø 0.05 mm to Ø 0.20 mm
  • Cross-section: ranging from 0.47 mm2 to 50 mm2

Construction of square copper braids

Nominal
cross-section
(mm²)		 Construction
No. of wires
± 2 %		 Edge length
(approx. mm)		 Weight
± 12 %
(approx. kg/km)
Wire Ø 0.05 mm ± 0.002
0,5 8 × 32 1,0 5
1,0 8 × 64 1,4 10
1,5 8 × 96 1,75 15
2,0 8 × 128 2,0 20
2,5 8 × 160 2,2 25
3 8 × 192 2,5 30
4 8 × 256 2,8 40
5 8 × 320 3,2 50
6 8 × 384 3,5 60
8 8 × 512 4,1 80
10 8 × 640 4,6 100
12 8 × 768 5,0 120
Wire Ø 0.07 mm ± 0.002
1,5 8 × 49 1,75 15
2,0 8 × 65 2,0 20
2,5 8 × 81 2,2 25
3 8 × 97 2,5 30
4 8 × 130 2,8 40
5 8 × 162 3,2 50
6 8 × 195 3,5 60
8 8 × 260 4,1 80
10 8 × 324 4,6 100
12 8 × 390 5,0 120
Wire Ø 0.10 mm ± 0.003
16 8 × 255 5,8 160
25 8 × 400 7,2 250
35 8 × 560 8,5 350
40 8 × 640 9,0 400
50 8 × 800 10,2 500

Construction of rectangular copper braids

Nominal
cross-section
(mm²)		 No. of wires Wire ∅
(mm)		 Weight
± 12 %
(approx. kg/km)
16 2.040 0,10 160
25 3.200 0,10 250
35 4.480 0,10 350
40 5.120 0,10 400
50 6.400 0,10 540

 

Dimension ration from 1 : 1.5 to 1 : 2.5
Dimension is determined in agreement with the customer depending on the intended use and availability of space.

Example:

Nominal cross-section 50 mm²
⇒ 13 mm x 8,5 mm or 15 mm x 7 mm