Weight formula for Carbon Steel sheets
The weight of a carbon steel plate can be calculated using several formulas, based on the length, width and thickness of the steel plate. The most commonly used formula is 7.85 multiplied by the length (in meters), width (in meters) and thickness (in millimeters), and then the result is converted into kilograms or tons. For example, if a steel sheet measures 6 meters long, 1.51 meters wide and 9.75 millimeters thick, its theoretical weight can be calculated as follows: 7.85 x 6 x 1.51 x 9, 75 = 693.43 kg.
In addition, there are some specific calculation methods, such as using 85 as the density coefficient for calculation, that is, the weight of the steel plate (kg) = thickness (mm) * length (m) * width (m) * 85/ 1000000.
It is important to note that the density of steel can vary due to different carbon contents. For example, the density of low carbon steel is approximately 7.85, while that of high carbon steel may be slightly lower. Therefore, when calculating the weight of a carbon steel sheet, its specific carbon content must be taken into account, although in most cases it can be assumed that the density of the carbon steel sheet is 7.85.
Furthermore, it is important to note that the thickness dimension of a steel plate is one of the main factors that affect its load capacity. Therefore, when calculating the weight, it must be ensured that the thickness value used is accurate to avoid safety risks or unnecessary waste. According to national standards, there are explicit regulations for the thickness deviation of steel sheets. For example, the positive tolerance for a qualified thickness of 12mm is 1.16mm and the negative tolerance is 0.76mm. This means that in real applications, the thickness of the steel plate may vary slightly. However, when calculating the weight, the theoretical weight is usually used, which is calculated based on the average of the maximum and minimum thickness allowed.
What is the density factor of carbon steel plates?
The density factor of carbon steel plates is approximately 7.85g/cm³. Additionally, a specific type of carbon steel known as S50C has a recorded density of 7.84g/cm³, which is close to the density of most carbon steels. Therefore, it can be considered correct to state that the density factor of carbon steel plates is approximately 7.85g/cm³.
Carbon steel plate weight chart in kg/m 2 and lb/ft 2
This plate weight table applies exclusively to carbon steel. For information on sheet gauge sizes, you can refer to the following post:
- Sheet Metal Gauge Thickness Chart
- 1 in. = 25.4mm
- 1 pound/ ft2 = 4.88kg/ m2
Table 1: Steel Sheet Thickness and Weight – Metric Units
| Thickness (mm) |
Weight (kg/m²) |
Weight (lb/ft²) |
|---|---|---|
| 0.2 | 1.57 | 0.32 |
| 0.25 | 1.96 | 0.40 |
| 0.3 | 2.36 | 0.48 |
| 0.35 | 2.75 | 0.56 |
| 0.4 | 3.14 | 0.64 |
| 0.45 | 3.53 | 0.72 |
| 0.5 | 3.93 | 0.80 |
| 0.55 | 4.32 | 0.88 |
| 0.6 | 4.71 | 0.96 |
| 0.65 | 5.1 | 1.04 |
| 0.7 | 5.5 | 1.13 |
| 0.75 | 5.89 | 1.21 |
| 0.8 | 6.28 | 1.29 |
| 0.9 | 7.07 | 1.45 |
| 1 | 7.85 | 1.61 |
| 1.1 | 8.64 | 1.77 |
| 1.2 | 9.42 | 1.93 |
| 1.3 | 10/21 | 2.09 |
| 1.4 | 10.99 | 2.25 |
| 1.5 | 11.78 | 2.41 |
| 1.6 | 12.56 | 2.57 |
| 1.7 | 1:35 p.m. | 2.73 |
| 1.8 | 14.13 | 2.89 |
| two | 15.7 | 3.22 |
| 2.2 | 5:27 p.m. | 3.54 |
| 2.5 | 7:36 p.m. | 3.97 |
| 2.8 | 21.98 | 4.50 |
| 3 | 11:55 p.m. | 4.82 |
| 3.2 | 25.12 | 5.14 |
| 3.5 | 27:48 | 5.63 |
| 3.8 | 29.83 | 6.11 |
| 3.9 | 30.62 | 6.27 |
| 4 | 31.4 | 6.43 |
| 4.5 | 35.33 | 7.24 |
| 5 | 39.25 | 8.04 |
| 5.5 | 43.18 | 8.84 |
| 6 | 47.16 | 9.66 |
| 7 | 54.95 | 11:25 am |
| 8 | 62.8 | 12.86 |
| 9 | 70.65 | 2:47 p.m. |
| 10 | 78.6 | 4:10 p.m. |
| 11 | 86.35 | 17.69 |
| 12 | 94.2 | 7:29 p.m. |
| 13 | 102.1 | 20.91 |
| 14 | 109.9 | 22.51 |
| 15 | 117.75 | 24.12 |
| 16 | 125.6 | 25.72 |
| 18 | 141.3 | 28.94 |
| 20 | 157 | 32.16 |
| 22 | 172.7 | 35.37 |
| 24 | 188.4 | 38.59 |
| 25 | 196.25 | 40:20 |
| 26 | 204.1 | 41.80 |
| 28 | 219.8 | 45.02 |
| 30 | 235.5 | 48.23 |
| 32 | 251.2 | 51.45 |
| 34 | 266.9 | 54.67 |
| 35 | 274.75 | 56.27 |
| 36 | 282.6 | 57.88 |
| 38 | 298.3 | 61.10 |
| 40 | 314 | 64.31 |
| 42 | 329.7 | 67.53 |
| 44 | 345.4 | 70.74 |
| 45 | 353.25 | 72.35 |
| 46 | 361.1 | 73.96 |
| 48 | 376.8 | 77.17 |
| 50 | 392.5 | 80.39 |
| 52 | 408.2 | 83.61 |
| 54 | 423.9 | 86.82 |
| 55 | 431.75 | 88.43 |
| 56 | 439.6 | 90.04 |
| 58 | 455.3 | 93.25 |
Table 2: Steel Sheet Thickness and Weight – Imperial Units
| Nominal Size Thickness (inches) |
Weight (lb/ft²) |
Weight (kg/m²) |
|---|---|---|
| 03/16 | 7.65 | 37.35 |
| 1/4 | 10.2 | 49.80 |
| 05/16 | 12.8 | 62.50 |
| 3/8 | 15.3 | 74.70 |
| 7/16 | 17.9 | 87.40 |
| 1/2 | 20.4 | 99.60 |
| 16/09 | 22.9 | 111.81 |
| 5/8 | 25.5 | 124.50 |
| 11/16 | 28.1 | 137.20 |
| 3/4 | 30.6 | 149.40 |
| 13/16 | 33.2 | 162.10 |
| 7/8 | 35.7 | 174.30 |
| 1 | 40.8 | 199.20 |
| 1 1/8 | 45.9 | 224.10 |
| 1 1/4 | 51 | 249.00 |
| 1 3/8 | 56.1 | 273.90 |
| 1 1/2 | 61.2 | 298.80 |
| 1 5/8 | 66.3 | 323.71 |
| 1 3/4 | 71.4 | 348.61 |
| 17/8 | 76.5 | 373.51 |
| two | 81.6 | 398.41 |
| 2 1/8 | 86.7 | 423.31 |
| 2 1/4 | 91.8 | 448.21 |
| 2 1/2 | 102 | 498.01 |
| 2 3/4 | 112 | 546.83 |
| 3 | 122 | 595.66 |
| 3 1/4 | 133 | 649.36 |
| 3 1/2 | 143 | 698.19 |
| 3 3/4 | 153 | 747.01 |
| 4 | 163 | 795.84 |
| 4 1/4 | 173 | 844.66 |
| 4 1/2 | 184 | 898.37 |
| 5 | 204 | 996.02 |
| 5 1/2 | 224 | 1093.66 |
| 6 | 245 | 1196.20 |
| 6 1/2 | 265 | 1293.84 |
| 7 | 286 | 1396.37 |
| 7 1/2 | 306 | 1494.02 |
| 8 | 326 | 1591.67 |
| 9 | 367 | 1791.85 |
| 10 | 408 | 1992.03 |
As the graph indicates, there is a significant difference in weight between sheets of different thicknesses.
This information is critical for applications such as construction, transportation and heavy machinery manufacturing, where plates are used in a variety of ways, from building structures to creating machine components.
By providing a comprehensive plate weight chart, MachineMfg allows engineers and manufacturers to make accurate calculations and determine the weight of plates needed for their projects.
This, in turn, helps them optimize their designs, select appropriate materials and improve the efficiency of their operations.
What is carbon steel sheet?
Mild steel is an iron-carbon alloy with carbon content ranging from 0.0218% to 2.11%. . It is also commonly called and known as carbon steel.
According to the carbon content of the material, we generally refer to steel with a carbon content of 0.06% to 0.25% as low carbon steel; steel with a carbon content of 0.25% to 0.55% as medium carbon steel; and steel with a carbon content of 0.60% to 1.03% as high carbon steel.
- When the carbon content in steel exceeds 0.23%, the welding performance of steel deteriorates. Therefore, low-alloy structural steels used for welding generally have a carbon content of no more than 0.20%.
- When the carbon content in steel is less than 0.8%, as the carbon content increases, the strength and hardness of the steel increase while its plasticity and toughness decrease.
- When the carbon content is above 1.0%, as the carbon content increases, the strength of the steel decreases. With an increase in carbon content, welding performance worsens (special weldability can significantly decrease with steels with a carbon content greater than 0.3%), cold brittleness and aging sensitivity increase, resistance to corrosion by Rust decreases, making high-carbon steels susceptible to rust when exposed to outdoor storage.
It usually also contains small amounts of silicon, manganese, sulfur and phosphorus. The higher the carbon content in carbon steel, the greater its hardness and strength, but the lower its ductility.
Types of carbon steel sheets
- According to its uses, carbon steel can be divided into three categories: carbon structural steel, tool carbon steel and easy-to-cut structural steel. Carbon structural steel is divided into two types: engineering construction steel and structural steel for machinery manufacturing;
- According to the casting method, it can be divided into open hearth steel and converter steel;
- According to the deoxidation method, it can be divided into boiling steel (F), calm steel (Z), semi-calm steel (b) and special calm steel (TZ);
- According to carbon content, carbon steels can be classified as low carbon steels (WC ≤ 0.25%), medium carbon steels (WC 0.25% – 0.6%) and high carbon steels ( WC> 0.6%) ;
- Based on material quality, carbon steels are categorized as common carbon steels (high in phosphorus and sulfur content), high-quality carbon steels (low in phosphorus and sulfur content), advanced high-quality steels (even lower in of phosphorus and sulfur than the previous category) and high quality special steels.
What are the common sources of error in calculating the weight of carbon steel plate?
Common sources of error in carbon steel plate weight calculation mainly include the following aspects:
- Deviation of production process and equipment: Differences in production processes and equipment may lead to certain errors in the thickness of the steel plate. This type of error arises from instability during the production process or limitations in equipment accuracy.
- Measuring tool error: When using a steel plate thickness gauge for measurement, if the sensing surface is not parallel to the bottom surface, there are a large number of corrosion points on the back of the measured object, or the measurement exceeds the limit, errors in measurement results will happen.
- Theoretical density assumption: The calculation of the theoretical weight of the steel plate is based on a certain theoretical density estimate, but the actual density of the steel material may vary due to different components, which may also lead to discrepancies between the theoretical weight and the actual weight.
- Deviation allowed by national standards: According to national standards, there is a certain deviation in steel materials, which means that weight errors are allowed within a certain range during the production and sales process itself.
- Impact of welding deformation: For low-carbon steel plates that require welding processing, the uneven expansion and contraction of the weld during the welding process may cause unstable deformation, which may affect the dimensions and weight of the final product.
