Cold rolled coils

Specifications:

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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