Galvalume Coil Coating Thickness Data
This specification covers 55 % aluminum-zinc alloy coated steel sheet in coils and cut lengths.
This product is intended for applications requiring corrosion resistance or heat resistance, or both.
The product is produced in a number of designations, types, and grades which are designed to be compatible with differing application requirements.
Weight [Mass] of Coating Thickness
NOTE 1—Use the information provided in below table to obtain the approximate coating thickness from the coating weight[mass].
NOTE 2—When considering material with coating designation less than AZ50 [AZM150], users are advised to discuss the intended application with the manufacturer to determine if the product is appropriate for the end use.
| Minimum Requirements | ||
|
|
Triple-Spot Test | Single-Spot Test |
| Inch-Pound Units | ||
| Coating Designation | Total Both Sides, oz/ft2 | Total Both Sides, oz/ft2 |
| AZ30 | 0.30 | 0.26 |
| AZ35 | 0.35 | 0.30 |
| AZ40 | 0.40 | 0.35 |
| AZ50 | 0.50 | 0.43 |
| AZ55 | 0.55 | 0.50 |
| AZ60 | 0.60 | 0.52 |
| AZ70 | 0.70 | 0.60 |
| Minimum Requirements | ||
| Triple-Spot Test | Single-Spot Test | |
| SI Units | ||
| Coating Designation | Total Both Sides, oz/ft2 | Total Both Sides, oz/ft2 |
| AZM100 | 100 | 85 |
| AZM110 | 110 | 95 |
| AZM120 | 120 | 105 |
| AZM150 | 150 | 130 |
| AZM165 | 165 | 150 |
| AZM180 | 180 | 155 |
| AZM210 | 210 | 180 |
The coating designation number is the term by which this product is specified. Because of the many variables and changing conditions that are characteristic of continuous hot-dip coating lines, the weight [mass] of the coating is not always evenly divided between the two surfaces of a sheet, nor is the coating evenly distributed from edge to edge. However, it can normally be expected that not less than 40 % of the single-spot test limit will be found on either surface.
Coating Properties
Coating weight [mass] shall conform to the requirements as shown in Table for the specific coating designation.
Use the following relationships to estimate the coating thickness from the coating weight [mass]:
1.00 oz /ft2 coating weight = 3.20 mils coating thickness, 3.75 g/m2 coating mass = 1.00 µm coating thickness.
Use the following relationship to convert coating weight to coating mass:
1.00 oz/ft2 coating weight = 305 g/m2 coating mass.
Post time: Apr-09-2021