Cold rolled sheets

Specifications:

Hindalco's cold rolled sheets are precision-finished to meet the international standards for tight thickness, tolerance, flatness and dimensional accuracy. Sound metallurgical properties for further fabrication, anodising characteristics and a blemish-free surface make it useful in both commercial and general engineering applications.

Common alloys
Dimensions
Parameter Range Standard Tolerance
Thickness (mm)  0.16 — 5.99 - 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
for 4.01 to 5.99 +/-0.15
Width (mm) 500 — 1600 914, 1219 +/-3 for width <=1000
+/-4 for width >1000
+/-10 for thickness >1.63
Length (mm) 2438 for thickness < 0.7,
3658 max for > 0.7		 2438,  3048  +/-3 for length <=1000
 +/-4 for length 1000 — 2000
 +/-5 for length 2000 — 3000
+/-7 for length >3000
Diagonal difference <=6 when length <=1000   -   -
<=8 when length 1000 — 2000
<=10 when length 2000 — 3000
<=14 when length > 3000
Interleaved sheets can be supplied in > 0.7 mm with polythene or self-adhesive film.
Stucco embossed sheets are also available in the thickness range of 0.30 — 1.10mm.
Stretched sheets in the thickness range of 2 — 5.99 mm can also be offered.

Mechanical properties
Alloy (AA) Temper UTS (mpa) %E (min)
(50mm gauge length)
Min Max
0.5 — 0.8 mm 0.81 — 1.3 mm 1.31 — 2.6 mm 2.61 — 5.99 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 1070 AA 1100 AA 1200 AA 3003 AA 3103 AA 3105 AA 8011
Fe 0.40 0.25 0.95 1.00 0.70 0.70 0.70 0.60 — 1.00
Si 0.25 0.20 (Fe + Si)  (Fe + Si) 0.60 0.50 0.60 0.50 — 0.90
Mg  0.05 0.03   -   -   - 0.30 0.20 — 0.80 0.05
Mn 0.05 0.03  0.05 0.05 1.00 — 1.50 0.90 — 1.50 0.30 — 0.80 0.20
Cu 0.05 0.04 0.05 — 0.20 0.05 0.05 — 0.20 0.10 0.30 0.10
Zn 0.05 0.04 0.10  0.10 0.10 0.20 0.25 0.20
Ti 0.03 0.03 -  0.05 0.1(Ti + Zn) 0.1(Ti + Zn) 0.10 0.08
Cr  -  - - -   0.10 0.10 0.05
Each (Others) 0.03  0.03 0.05 0.05 0.05 0.05 0.05 0.05
Total (Others) - - 0.15 0.125 0.15 0.15 0.15 0.15
 Al 99.50 99.70 99 99 Remainder Remainder Remainder Remainder
Single number indicates maximum content

Strong alloys
Dimensions
Parameter Range Tolerance
Thickness (mm) 0.30 — 5.99   for 0.30 to 0.56 +/-0.05
  for 0.57 to 0.71 +/-0.05, -0.08
  for 0.72 to 1.21 +/-0.08
for 1.22 to 4.00 +/-0.13
for 4.10 to 5.99 +/-0.15
Width (mm) 650 — 1220   +/-3 for width <=1000
  +/-4 for width >1000
Length (mm) 600 — 3200   +/-3 for width <=1000
 +/-4 for width 1000 - 2000
  +/-5 for width > 2000 - 3000
  +/-7 for width >3000

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 0.2 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

Cold rolled sheets are wrapped in HDPE and placed on wooden pallets which have runners along and across the length of the sheet. An angle board is attached to the edges for edge protection, plyboard is placed on the top and bottom of the stack and the package is strapped with hoop iron straps. Silica gel packets are used for moisture protection.

Applications :
  • Defence
  • Industrial engineering
  • Transport — road, rail, air, marine
  • Building and construction
  • Fan blades
  • Electrical engineering

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