Electrical grade aluminum bus bar

Electrical grade aluminum bus bar is also called ec grade aluminium busbar, normally have two types, one is pure aluminum, such as 1350, 1050, 1060 and 1070 alloy, pure aluminium has a conductivity of about 65% IACS. The other one is 6*** alloy, such as alloy 6061 and 6101, the alloy 6101 is quite common for busbar usage.

Electrical grade aluminum bus (pure aluminum)

Application of alloy 6101 in bus bar

Aluminum is subjected to oxidisation when exposed to the atmosphere. The coating of aluminum by different metals is one of the most comon commercial practices used to improve the stablity and to suppress the galvanic corrosion of aluminum-to -copper connection. The most widely used coating materials are tin, silver, copper, cadmium and nickel.

Alloy: 1050, 1350, 1060, 1070, 6101, 6063

Temper: H12, H112, T6, T65, T7, O

Thickness: 2-20mm

Width: Less than 300mm

Length: 3000mm--6000mm, or as per request.

Surface treatment: tin plating, silver plating, nickel plating, copper plating.

Insulated: with PVC tube or Dipping with the PVC material.

Further fabrication:  Punched aluminum flat bar, perforated aluminum flat bar, aluminum flat bar with holes, black anodized aluminum flat bar.

Rectangular angle of electrical grade aluminum bus bar

3mm
(thickness)

3*15

3*20

3*25

3*30

3*40

3*50

 

 

 

 

4mm
(thickness)

4*10

4*20

4*25

4*30

4*40

4*45

4*50

 

 

 

5mm
(thickness)

5*20

5*25

5*30

5*35

5*40

5*50

5*60

5*80

 

 

6mm
(thickness)

6*20

6*30

6*40

6*50

6*60

6*80

6*100

6.3*50

6.3*80

★6.3*100

7mm
(thickness)

7.6*80

 

 

 

 

 

 

 

6.3*76

★6.3*63

8mm
(thickness)

8*11

8*30

8*40

8*50

8*60


8*63

8*80

8*100

8*120

8.1*74

10mm
(thickness)

10*30

10*40

10*50

10*60

★10*63

10*80

10*100

10*120

10*125

10*140

10*150

10*160

 

 

 

 

 

 

 

 

12mm
(thickness)

★12*60

★12*80

★12*100

12*120


12*125

12*150


12.5*125

 

 

 

14mm
(thickness)

★14*80

★14*100

 

Square rod


50*50


35*55

19*19

Six angle rod

★30

★40

15mm
(thickness)

15*100

15*120

 

Round rod

★¢10

★¢12

¢16

★¢28

★¢32

★¢40

16mm
(thickness)

★16*100

★16*125

 

Round rod

★¢45

★¢46

★¢50

★¢55

★¢60

★¢65

20mm
(thickness)

★20*80

★20*100

 

 

★¢70

★¢75

★¢80

 

 


 

Round angle of electrical grade aluminum bus bar

2mm
(thickness)

R2*20

 

 

 

 

 

 

 

3mm
(thickness)

R3*30

R3*40

R3*50

R3*60

R3*80

R3*100

R3*120

R3*160

4mm
(thickness)

R4*25

R4*30

R4*40

R4*50

R4.7*151

 

 

 

5mm
(thickness)

R5*30

R5*35

R5*40

R5*50

R5*60

R5*120

 

 

6mm
(thickness)

R6*50

R6*60

R6*80

★R6.3*63

R6*100

R6*120

R6*140

R6*160

8mm
(thickness)

R8*40

R8*50

R8*60

★R8*63

R8*80

R8*100

 

 

10mm
(thickness)

R10*50

R10*60

R10*80

R10*100

★R10*120

R10*125

R10*170

R10.4*25

12.5mm
(thickness)

★R12.5*80

★R12.5*125

 

★R16*120

 

 

 


 

Physical and Electrical Properties of Aluminum Wrought Bus Conductor Alloys
(ASTM B 236,B 317,and The Aluminum Association)

Applying to all alloys and tempers of wrought 
alloys, typical values.
 
Weight, lb/cu in. (rounded) 0.098
Specific heat, cal/gm/℃ or BTU/LB/F 0.214 
at 70℃ for 1350 and 0.220 for 6101(e).
 
Coefficient of thermat expansion (linear)/℃
 0.000023.
Specific gravity - 2.70.

Modulus of Elasticity, Typical, psi 10 * 106, up to 2% higher
 in compression.
 
Note : if two values are shown, the more favorable is “typical”; 
the less favorable is designated “minimum” provided a higher
 value is favorable. Otherwise the term “guaranteed” is 
sometimes used.
 

Properties

Alloy and Temper

 

1350
Any Temper

6101
 -T6

6101
-T61

6101
-T63

6101
-T64

6101
-T65

6101-T6
Typical

6063
-T6 typical

Thermal conductivity at 20℃,watts/sq.
 In /in /℃

5.9-6.0

5.3-5.4

5.5-5.6

5.4-5.5

5.7-5.8

5.7-5.8

3.9

5.1

Volume electrical conductivity at 20℃ 
percent IACS(a).

61-62

55-56

57-58

56-57

59.5-60.5

56.5-57.5

42.43

63(a)

Electrical resistivity (de) at 20℃ (68F)
 microhms/sq.in./ft(c).

13.35-
13.14

14.81-
14.55

14.29-
14.04

14.55-
14.29

13.69-
13.46

14.42-
14.17

19.39-
18.94

15.37

Temperature coefficient of electrical 
resistance at 20℃ /℃(d).

0.00403-
0.00410

0.00363-
0.00370

0.00377-
0.00383

0.00370-
0.00377

0.00393-
0.00400

0.00373-
0.00380

0.00284-
0.00277

0.003

Temperature Coefficients of Resistance (dc) for Bus-conductor Aluminum Alloys 
And Representative Value for Commercial Copper Bus Bar
Aluminum Alloys and Tempers, And Conductivity % (IACS) (a)

 

6061-
T6
Typical

6063-T6
Typical

6101-T6
Minimum

6101-T63
Minimum

6101-T6
Minimum

6101-T61
Typical

 

6101-T64
Minimum

 

1350 
Minimum

1350 
Typical

Representative 
Value
 Commercial 
Copper 
Busbar

% IACS
Temp. C.

40%

53%
(b)

55%

56%

57%

58%

59%

59.5%

60%

61%

62%

98%

0
10
20
25

.00279
.00271
.00264
.00261

.00377
.00363
.00350
.00344

.00392
.00377
.00363
.00357

.00400
.00384
.00370
.00363

.00407
.00391
.00377
.00370

.00415
.00398
.00383
.00376

.00423
.00406
.00390
.00382

.00427
.00409
.00393
.00386

.00431
.00413
.00396
.00388

.00438
.00420
.00403
.00395

.00446
.00427
.00410
.00401

.00417
.00401
.00385
.00378

30
40
50
60

.00257
.00251
.00245
.00239

.00338
.00327
.00317
.00307

.00351
.00339
.00328
.00317

.00357
.00344
.00333
.00322

.00363
.00350
.00338
.00327

.00369
.00356
.00344
.00332

.00375
.00362
.00349
.00337

.00378
.00364
.00352
.00340

.00381
.00367
.00354
.00342

.00387
.00373
.00360
.00347

.00393
.00379
.00365
.00352

.00371
.00358
.00345
.00334

70
80
90
100

.00233
.00228
.00223
.00218

.00298
.00289
.00281
.00274

.00307
.00298
.00290
.00282

.00312
.00303
.00294
.00285

.00316
.00307
.00298
.00289

.00322
.00312
.00302
.00293

.00326
.00316
.00306
.00297

.00329
.00318
.00308
.00299

.00331
.00320
.00310
.00301

.00335
.00325
.00314
.00305

.00340
.00329
.00318
.00309

.00323
.00313
.00303
.00294

(a) For alloys not shown. obtain conductivities from Table 13·2, and interpolate from the listed values.
 (b) Per note on Table 1;3.2, 55% conductivity is much used as design basis for 6063·T6 alloys for tubes, hence coefficients should be taken from the column, headed 55%.
Mechanical Properties of Aluminum Bus Conductor and Related Alloys
(The Aluminum Association ; ASTM B 236, B 241, and B 429; and Manufacturer’s Listings)

Product

Alloy and Temper

Thickness in
Ultimates

Tensile Strength (ksi)
At 20 (68。F)

Typical 
Ultimate

Typical Yield

Typical(a) 
Elongation
(Percent - in 2 in. 
Or 4 Dia)

Minimum 
Ultimate

Minimum 
Yield

Extruded rod, bar tube,
pipe and shapes

1350-H111

All

8.5

3.5

 

 

35.0

6101-T6

0.125-0.500

29.0

25.0

32.0

28.0

15.0

6101-T61

0.125-0.749
0.750-1.499
1.500-2.000

20.0
18.0
15.0

15.0
11.0
8.0

 

 

 

6101-T63
6101-H111
6101-T64
6101-T65

0.125-0.500
0.250-2.000
0.125-1.000
0.125-0.749

27.0
12.0
15.0
25.0

22.0
8.0
8.0
20.0

14.0

11.0

 

Extruded pipe(c)

6061-T6
6063-T6

Pipe size 1.0 & 
over Pipe sizes,all

38.0
30.0
 

35.0
25.0

45.0
35.0

40.0
31.0

10.0 min
8.0 min

Rolled bar

1350-H12

0.125-1.000

12.0

8.0

14.0

12.0

 

Sawed-plate bar or sheet

1350-H112

0.125-0.499
0.500-1.000
1.001-3.000

11.0
10.0
9.0

6.0
4.0
3.5

 

 

10.0min
16.0min
22.0min

Rolled sheet
(for shearing or forming)

1350
1350-H12
1350-H14

0.020-0.249

8.0
12.0
14.0

 

12.0
14.0
16.0

4.0
12.0
14.0

20-30 min
4-9 min
3-6 min

1350-H16
1350-H18

0.020-0.125

16.0
18.0

 

18.0

16.0

2-4 min
2-4 min

Cast Alloy for Bus

1350-F 
1050

1 in. And up

 

 

8.5

3.5

35.0

Cast Alloy for Fittings

A356.0-T61

 

37.0

 

 

 

5.0

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