Square Bar Weight Calculation Formula
The weight calculation formula for square steel is: Square steel weight (kg) = 0.00785 * Width * Width * Length.
For example, if there is a square steel piece with a width of 50mm and a length of 6m, its weight can be calculated as 50 * 50 * 6 * 0.00785 = 117.75kg, based on the formula.
Square Bar Weight Chart
The table below shows the theoretical weight of square bars of various grades, measured in millimeters, in both kilograms per meter and pounds per foot.
The weight of a square bar is an important consideration in a variety of industries, from construction to manufacturing.
The table includes measurements for grades ranging from 5.5 mm to 200 mm. For example, a 5.5 mm square bar has a theoretical weight of 0.237 kg/m or 0.16 lb/ft, while a 200 mm square bar has a theoretical weight of 3.14 kg/m or 2.11 lb/ft.
As the grade of the square bar increases, so does its theoretical weight. This information is crucial for professionals who need to select the right materials for their projects, ensuring safety and efficiency.
The following table lists the theoretical weight of 5.5-200mm square bar in kg/m.
If your steel size is not in the table below, you can use our steel weight calculator to calculate it online.
Table 1. Square Bar Weight Chart
| Degree (mm) | Theoretical weight (kg/m) |
Theoretical weight (lb/ft) |
| 5.5 | 0.237 | 0.16 |
| 6 | 0.283 | 0.19 |
| 6.5 | 0.332 | 0.22 |
| 7 | 0.385 | 0.26 |
| 8 | 0.502 | 0.34 |
| 9 | 0.636 | 0.43 |
| 10 | 0.785 | 0.53 |
| 11 | 0.95 | 0.64 |
| 12 | 1.13 | 0.76 |
| 13 | 1.33 | 0.89 |
| 14 | 1.54 | 1.03 |
| 15 | 1.77 | 1.19 |
| 16 | 2.01 | 1.35 |
| 17 | 2.27 | 1.53 |
| 18 | 2.54 | 1.71 |
| 19 | 2.83 | 1.90 |
| 20 | 3.14 | 2.11 |
| 21 | 3.46 | 2.33 |
| 22 | 3.8 | 2.55 |
| 23 | 4.15 | 2.79 |
| 24 | 4.52 | 3.04 |
| 25 | 4.91 | 3:30 p.m. |
| 26 | 5.31 | 3.57 |
| 27 | 5.72 | 3.84 |
| 28 | 6.15 | 4.13 |
| 29 | 6.6 | 4.43 |
| 30 | 7.06 | 4.74 |
| 31 | 7.54 | 5.07 |
| 32 | 8.04 | 5:40 am |
| 33 | 8.55 | 5.75 |
| 34 | 9.07 | 6.09 |
| 35 | 9.62 | 6.46 |
| 36 | 10.2 | 6.85 |
| 38 | 11.3 | 7.59 |
| 40 | 12.6 | 8.47 |
| 42 | 13.8 | 9.27 |
| 45 | 15.9 | 10.68 |
| 48 | 18.1 | 12.16 |
| 50 | 19.6 | 13.17 |
| 53 | 22 | 14.78 |
| 55 | 23.7 | 15.93 |
| 56 | 24.6 | 16.53 |
| 58 | 26.4 | 17.74 |
| 60 | 28.3 | 19.02 |
| 63 | 31.2 | 20.97 |
| 65 | 33.2 | 10:31 p.m. |
| 68 | 36.3 | 24:39 |
| 70 | 38.5 | 25.87 |
| 75 | 44.2 | 29.70 |
| 80 | 50.2 | 33.73 |
| 85 | 56.7 | 38.10 |
| 90 | 63.6 | 42.74 |
| 95 | 70.8 | 47.58 |
| 100 | 78.5 | 52.75 |
| 105 | 86.5 | 58.13 |
| 110 | 95 | 63.84 |
| 115 | 104 | 69.88 |
| 120 | 113 | 75.93 |
| 125 | 123 | 82.65 |
| 130 | 133 | 89.37 |
| 135 | 143 | 96.09 |
| 140 | 154 | 103.48 |
| 145 | 165 | 110.87 |
| 150 | 177 | 118.94 |
| 155 | 189 | 127.00 |
| 160 | 201 | 135.07 |
| 165 | 214 | 143.80 |
| 170 | 227 | 152.54 |
| 180 | 254 | 170.68 |
| 190 | 283 | 190.17 |
| 200 | 314 | 211.00 |
How to select the appropriate weight calculation formula based on actual application?
Choosing the suitable calculation formula for square steel weight mainly depends on your actual application scenario. As a common building material, square steel is widely used in building structures, bridges and mechanical manufacturing. Therefore, when selecting the calculation formula, the specific needs of these fields must be considered.
For most application scenarios such as building structures and bridge construction, the basic weight calculation formula can be used: side width (mm) × side width (mm) × length (m) × 0.00785 . This formula is suitable for calculating the weight of most standard square steels and can provide an accurate estimate of the basis weight.
However, for some special application scenarios or specific square steel sizes, other factors may need to be considered. For example, if the thickness of square steel significantly affects the weight, or there are special requirements for the size of square steel in a specific application, it may be necessary to adjust the calculation formula to more accurately reflect the actual situation.
Additionally, for non-standard sizes or special square steel applications, it may be necessary to consult specific theoretical weight tables or consult professionals for a more accurate calculation method. This is because the standard formula may not fully meet the needs of all specific situations.
When choosing the appropriate square steel weight calculation formula, the specific application scenario and size requirements of square steel should be considered. For most conventional applications, the basic weight calculation formula is sufficient.
Common Sources of Error in Calculating the Square Weight of Steel
Common sources of error in calculating the square weight of steel include the following points:
1. Material-related errors:
Differences in steel quality and properties can lead to discrepancies between theoretical and actual weights. This is the main factor that causes the theoretical weight of the steel grating to be different from the actual weight. These errors may be due to improper operation on the production line, insufficient equipment precision, or inconsistencies in the material handling process.
2. Uneven thickness of the plating layer:
For hot-dip galvanized square steel, the uneven thickness of the galvanizing layer is also an important factor, causing a discrepancy between the actual and theoretical weights. If the thickness of the galvanizing layer varies significantly at different points, then the weight of this portion will also be different, thus affecting the overall weight calculation.
Conclusion
In general, the weight of a steel bar is an important consideration when determining its suitability for a specific application.
Knowing the theoretical weight can help engineers and manufacturers determine the amount of material needed for a given project, as well as estimate the costs associated with purchasing and transporting the steel.
