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Gonda Metal Industry Co., LTD.

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 GK Product Lineup 
Copper and Copper Alloy Products
Materials 
  Copper Busbar 
  Copper Round Rod 
Copper Anode for Plating 
Brass Round Rod/
Cadmium-less Brass Round Rodd
 
Copper Coils 
Special-alloy Rotor Bars 
High-quality Oxygen-free copper 
 Forgings
Ring/Plate 
Closed Die Forging 
Magnesium Alloy Products
Materials 
Magnesium alloy sheet AZ61
Workpieces 
Reflow palette made from Magnesium alloy AZ61
Die forgings
Forgings by magnesium alloys 

Copper Busbar

Our copper busbars are finished by cold-rolling or cold-drawing the hot rolled material or hot extrusions. Silver-bearing copper oxygen-free busbar is also available in addition to tough pitch copper and oxygen-free copper busbar.

 
  ฃCopper Busbar

œExample of Use
 
  ฃSubstation Facilities
 
 
  ฃSubstation Facilities

œTypes
Types Applicable JIS No. Designation Features and application examples
Tough pitch copper busbar JIS H3140 C1100BB CuBB Excellent electric and thermal conductivity and outstanding ductility, corrosion resistance, and weatherability. Bus bars, switch bars,electric parts, etc.
Oxygen-free copper busbar JIS H3140 C1020BB OFCuBB Superb electric and thermal conductivity and ductility, as well as excellent weldability, corrosion resistance, and weatherability. Has no fear of causing hydrogen embrittlement. Bus bars, switch bars, electric parts, etc.
Silver-bearing tough-pitch copper busbar \ AgCuBB Ag content is generally 0.027`0.3%
Silver-bearing oxygen-free copper busbar \ AgOFCuBB \

œRange of sizes
The standard length is 5‚D@Other sizes and lengths areproduced to orderD 

œPerformance
  <Mechanical properties>

Type
(designation)
Temper grade Tensile test Bend test
Thickness
(mm)
Tensile strength
(N/mm2)
Elongation
(%)
Thickness
(mm)
Bending angle Inside
radius
Tough pitch copper bus bar
(C1100BB)

Oxygen-free copper bus bar
(C1020BB)
O 2 to 30 incl. 195
or more
35
or more
2 to 15 incl. 180‹ Half the thickness
1/4H 2 to 30 incl. 215
`
275
25
or more
2 to 15 incl. 180‹ One time the thickness
1/2H 2 to 20 incl. 245
`
315
15
or more
2 to 15 incl. 90‹ 1.5 times the thickness
H 2 to 10 incl. 275
or more
\ \ \ \

  <Electric conductivity>
Type(designation) Temper grade Electric conductivity
(%)(20Ž)
Tough pitch copper bus bar
(C1100BB)

Oxygen-free copper bus bar
(C1020BB)
O 100 or more
1/4H 98 ore more
1/2H 98 or more
H 97 or more

  <Dimensional tolerances>iunitFmmj
Thickness Thickness tolerances Width tolerances
Width:200 incl. Width:over 200
to 230 incl.
Width:100 incl. Width:over 100
to 230 incl.
2 to 3.2 incl. }0.08 \ }0.8 \
ove 3.2 to 5 incl. }0.10 \ }1.0 }1%
over 5 to 8 incl. }0.12 }0.13
over 8 to 12 incl. }0.15 }0.18
over 12 to 20 incl. }0.20 }0.23
over 20 to 30 incl. }1.2% }1.3%
RemaksF 1.  When plus or minus only dimensional tolerances are specified, tolerances are double the above numerical values. 
  2.  Dimensional tolerances other than specified or still more stringent tolerances than specified are available on request. 
  3.  Bend tolerances shall be 3.5mm or less per 2m in length. 

  <Chamfer radius>iunitFmmj
Thickness Chamfer radius
2 to 5 incl. about 0.8
over 5 to 8 incl. about 1.2
over 8 to 30 incl. about 1.6
The chamfer radius of bus bar shall be about 0.8mm or less round or flat face. However, if specified, bus bar shall be chamfered in compliance with the above.
   
RemaksF 1.  Chamfer radius other than specified is available on request.

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