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Cold Rolled Coils

The cold rolled coils are used in commercial and general engineering applications such as bus bodies, cladding and fan blades.

Specification
Cold Rolled Coils

The cold rolled coils are used in commercial and general engineering applications such as bus bodies, cladding and fan blades.

Hindalco's cold rolled coils are precision-finished to match international standards. They have good shape, high tolerance, versatility and blemish-free surfaces. They are used in commercial and general engineering applications such as bus bodies, cladding and fan blades. The company meets the demands of its ever-growing clientele with continuous upgrades and process improvement.

Common alloys

Dimensions
 Parameter  Range  Standard  Tolerance
Thickness (mm) 0.16 — 4.00 - for 0.16 to 0.29 +/-0.01
 for 0.30 to 0.71 +/-0.05
 for 0.72 to 1.40 +/-0.08
 for 1.41 to 2.00 +/-0.11
 for 2.01 to 4.00 +/-0.12
Width (mm) 50 — 1620 914, 1219, 1525  Slit coil: +2, -0
I.D (mm) 508, 203 - -
Coil density (kg/mm) 6 max - -
Stucco embossed coils are also available in the thickness range of 0.30 — 1.10 mm.
Mechanical properties
Alloy (AA) Temper  UTS (mpa) %E (min)
(50mm gauge length)
Min Max
0.50 — 0.80 mm 0.80 — 1.30 mm 1.30 — 2.6 0mm 2.60 — 4.00 mm
1050 O 55 95 22 25 29 30
1050 H14 95 125 4 5 6 6
1050 H18 125   - 3 3 4 4
1070 O   - 95 27 27 29 34
1070 H14 95 120 4 5 6 7
1070 H18 120  - 3 3 4 4
1200, 1100 O 70 110 20 25 29 30
1200, 1100 H14 105 140 3 4 5 5
1200, 1100 H16 125 150 2 3 4 4
1200, 1100 H18 140   - 2 2 3 3
3103, 3003 O 90 130 20 23 24 24
3103, 3003 H14 130 180 3 4 5 5
3103, 3003 H16 150 195 2 3 4 4
3103, 3003 H18 170 - 2 2 3 3
3105 O 95 145 14 14 15 16
3105 H14 150 200 4 4 5 5
3105 H16 175 215 2 2 3 4
3105 H18 195  - 1 1 1 2
8011 O 85 120 20 23 25 30
8011 H14 125 160 3 4 5 5
8011 H16 150 180 2 3 4 4
8011 H18 175  - 2 2 3 3
Chemical composition
Alloy (%) AA 1050 AA 1200 AA 3003 AA 3103 AA 3105 AA 8011
Fe 0.40 1.00 0.70 0.70 0.70 0.60 — 1.00
Si 0.25 (Fe + Si) 0.60 0.50 0.6 0.50 — 0.90
Mg - -  - 0.30 0.20 — 0.80 0.05
Mn 0.05 0.05 1.0 — 1.50 0.9 — 1.50 0.30 — 0.80 0.20
Cu 0.05 0.05 0.05 — 0.20 0.10 0.30 0.10
Zn 0.05 0.10 0.10 0.20 0.25 0.20
Ti 0.03 0.05 0.1 (Ti + Zr) 0.1 (Ti + Zr) 0.10 0.08
Cr  -  -  - 0.10 0.10 0.05
Each (others) 0.03 0.05 0.05 0.05 0.05 0.05
Total (others)   - 0.125 0.15 0.15 0.15 0.15
Al 99.50 99 Remainder Remainder Remainder Remainder
Single number indicates maximum content

 


Strong alloys

Dimensions
Parameter Range Tolerance
Thickness (mm)   0.3 — 2.00  for 0.30 to 0.71 +/-0.05
 for 0.72 to 1.4 +/-0.08
 for 1.41 to 2.00 +/-0.11
Width (mm)   50 — 1250   Slit coil: +2, -0
I.D (mm)   203, 305, 406 for thickness < 0.71 -
406, 508 for thickness > 0.71
Density (kg/mm)   3.5 max -
Mechanical properties
Alloy (AA) Temper UTS (mpa) %E (min)
(50mm gauge length)
Min Max
3004 O 150 200 10
3004 H32 193 240 1
3004 H34 220 260 1
3004 H36 240 280 1
3004 H38 260   - 1
5005 O 103 144 12
5005 H32 117 158 3
5005 H34 137 180 2
5005 H36 158 200 1
5005 H38 180  - 1
5052 O 170 210 14
5052 H32 210 260 4
5052 H34 230 280 3
5052 H36 255 300 2
5052 H38 268  - 2
5251 O 160 200 13
5251 H32 190 230 3
5251 H34 210 250 3
5251 H36 230 270 3
5251 H38 255  - 2
Chemical composition
Alloy (%) AA 3004 AA 5005 AA 5052 AA 5251
Fe 0.70 0.70 0.40 0.50
Si 0.30 0.30 0.25 0.40
Mg 0.80 — 1.30 0.50 — 1.10 2.20 — 2.80 1.80 — 2.40
Mn 1.00 — 1.50 0.20 0.10 0.10 — 0.50
Cu 0.25 0.20 0.10 0.15
Zn 0.25 0.25 0.10 0.15
Ti - - - 0.15
Cr   - 0.10 0.15 — 0.35 0.15
Each (Others) 0.05 0.05 0.05 0.05
Total (Others) 0.15 0.15 0.15 0.15
Al Remainder Remainder Remainder Remainder
Single number indicates maximum content
Applicable standards
ASTM - B -209M, Aluminium association — aluminium standards and data, Hindalco manufacturing limits (as applicable).

Packing

The coils are packed in eye-to-sky or eye-to-wall position, wrapped in HDPE and hardboard, strapped with hoop iron and placed on wooden pallets. Moisture protection is provided by silica gel packets.

Applications :

  • Bus cabins and bodies
  • Insulation
  • Cladding in buildings, aluminium composite panels, false ceilings and panelling (plain or colour-coated coils)
  • Electrical busbar ducting, flexibles, transformer strips, etc
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