Product · HSN 72104900
Galvalume
Aluminium-zinc coated steel offering markedly longer service life than conventional galvanised steel in aggressive environments.
Specifications
| Thickness | As per need (0.20 – 2.00 mm) |
| Width | 600 – 1250 mm |
| Coating Type | 55% Al / 43.4% Zn / 1.6% Si alloy |
| Coating Weight | AZ70 – AZ150 g/m² |
| Grade | IS 15961, SGLCC, DX51D+AZ or as specified |
| Tensile Strength | 300 – 550 MPa |
| Surface | Anti-fingerprint, chromated or oiled |
| Color | Silver / metallic |
| Product Form | Coil, sheet or slit strip |
| Diameter | Inner 508 / 610 mm |
| Corrosion Resistant | Yes, 2–4× GI life |
| Heat Resistance | Yes, heat reflective |
| Steel Standard | IS 15961, JIS G3321, ASTM A792 or equivalent |
| Recyclable | Yes |
| Standard | AZ coated |
| HSN code | 72104900 |
Where it is used
Galvalume supplied in the grade, size and finish roofing require.
Galvalume supplied in the grade, size and finish solar mounting require.
Galvalume supplied in the grade, size and finish industrial sheds require.
Available shapes & forms
Full coils in GI, GL or colour-coated finish.
Plain sheets cut to length for fabrication.
Narrow coils slit for purlins, ducts and sections.
Trapezoidal and corrugated roofing and wall sheets.
What Avighna does with Galvalume
How Galvalume is made
Continuous hot-dip coating in a 55% aluminium, 43.4% zinc, 1.6% silicon alloy bath.
- 1Cleaning & annealing
Cold rolled strip is cleaned and annealed in-line ahead of the coating pot.
- 2Aluminium-zinc bath
The strip is drawn through the molten Al-Zn-Si alloy, forming a self-healing barrier layer.
- 3Coating control
Air knives set coating mass; the characteristic spangle-free finish forms on cooling.
- 4Processing to size
Sheared or slit for roofing, solar mounting and shed fabrication.