Products we Trade in

Fin Stock

The fin stock, with tight gauge tolerances and excellent slit edges, has found wide usage in car radiators, heat exchangers and air conditioners.

Specification
Fin Stock

The fin stock, with tight gauge tolerances and excellent slit edges, has found wide usage in car radiators, heat exchangers and air conditioners.

By meeting stringent specifications of globally competitive companies, Hindalco's flat fin stock has proved its worth in air conditioners, car radiators and heat exchangers. With the help of high-quality ingots, state-of-the-art gauge and shape control and precision slitting, we manufacture fin stock that has tight gauge tolerances and excellent slit edges. A tight build-up combined with internal sound metallurgical properties produce good drawability required for all types of finning;

Dimensions
Parameter Range Tolerance
Thickness (mm) —0.25 +/-0.005 up to 0.12
Partially annealed: 0.10 — 0.25 +/-0.01 for > 0.12
Width (mm) 100 — 1220 +/-0.5 for 100 — 250
+/-1 for > 250
Coil I.D (mm) With core: 70, 76, 150, 203, 300, 508 -
Coil O.D (mm) 300 — 1350
—550
-
Core Plastic / M.S / AL -
Flatness
Less than 20 I units (typical)

 

Applicable standards
:: ASTM - B - 209M, Aluminium association — aluminium standards and data, Hindalco manufacturing limits (as applicable)

 

 

Mechanical properties
Alloy (AA) Temper %E (min) UTS(mpa)
Min Max
1050 H19 1 130 -
H26 4 95 130
1100 O 20 70 110
H14 3 105 140
H16 2 125 150
H22 20 95 130
H24 8 110 145
H26 4 130 165
1200 O 20 70 100
H14 3 105 140
H16 2 125 150
H22 20 95 130
H24 8 110 145
H26 4 130 165
3003 O 20 95 130
H14 3 130 180
H18 2 185 -
8006 H25 8 120 145
O 25 100 130
8011 O 25 85 115

 

Chemical composition
Alloy (%) AA1050 AA1100 AA1200 AA3003 AA8006 AA8011
Fe 0.40 0.95 1.00 0.70 1.4 0 — 1.60 0.6 — 1.00
Si 0.25 (Fe + Si) (Fe + Si) 0.60 0.02 0.5 — 0.90
Mg 0.05 - - - 0.02 0.05
Mn 0.05 0.05 0.05 1.0 — 1.50 0.4 — 0.50 0.20
Cu 0.05 0.05 — 0.20 0.05 0.05 — 0.20 0.05 0.10
Zn 0.05 0.10 0.10 0.10 0.05 0.10
Ti 0.03 - 0.05 0.1(Ti+Zr) 0.03 0.08
Cr - - - - - 0.05
Each(Others) 0.03 0.05 0.05 0.05 0.05 0.05
Total (Others) - 0.15 0.125 0.15 0.15 0.15
Al 99.50 99.00 99.00 Remainder Remainder Remainder

Packing

Hindalco's flat fin stock is packed on wooden skids in either eye-to-sky or eye-to-wall condition, wrapped in HDPE fabric and hardboard and strapped with hoop iron. Moisture protection is ensured with silica gel packets and as the final step, the entire packed product is placed in a wooden cage.

Applications :
  • Air conditioners
  • Car radiators
  • Automobile heat exchangers
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