
Calculating the specifications of color-coated coils involves determining several key parameters such as weight, length, thickness, and width. Here’s a step-by-step guide on how to calculate these specifications:
1. Calculate the Weight of the Coil
The weight of a color-coated coil can be calculated using the formula:
Weight=Density×Volume

Where:
Density for steel = 7.85 g/cm³ or 7850 kg/m³
Density for aluminum = 2.71 g/cm³ or 2710 kg/m³
Thickness is the thickness of the coil
Width is the width of the coil
Length is the length of the coil
2. Calculate the Length of the Coil
The length of the coil can be determined if you know the weight of the coil:

3. Calculate the Thickness of the Coating
If you need to account for the coating thickness, you should add the coating thickness to the base metal thickness. Coatings are often measured in microns (µm), where:
1 micron (µm) = 0.001 mm
Total thickness (including coating) can be found by:

4. Example Calculation
Let’s assume we have a steel coil with the following specifications:
- Base Metal Thickness: 0.5 mm
- Coating Thickness: 20 µm (0.02 mm for top coat + 0.02 mm for back coat = 0.04 mm)
- Width: 1250 mm
- Length: 2000 m
Convert dimensions to meters:
- Thickness = 0.5 mm + 0.04 mm = 0.54 mm = 0.00054 m
- Width = 1250 mm = 1.25 m
- Length = 2000 m
Now calculate the weight:

5. Calculate Length from Weight
If you only have the weight and need to find the length, rearrange the weight formula:

Let’s use a coil weight of 10,602 kg:

Summary

These formulas allow you to calculate various specifications for color-coated coils. Adjust the parameters based on the material type and the specific dimensions of your coil.