What is rebar?
Rebar is another name for hot-rolled ribbed bar. The type of common hot-rolled steel bars is indicated by the letters HRB and the minimum yield strength of the type. The letters H, R and B represent hot rolled, ribbed and bar, respectively.
Hot rolled ribbed bars are divided into three grades: Grade II (HRB335, also known as old grade number 20MnSi), Grade III (HRB400, also known as old grade number 20MnSiV, 20MnSiNb, 20mnti) and Grade IV (HRB500).
How to calculate the weight of rebar?
The formula for calculating the weight of rebar is:
W = 0.00617 * d * d (d = section diameter mm) unit: kg/m
Rebar Weight Calculator
According to national standards, rebar can be delivered based on theoretical weight or actual weight. However, the market tends to use theoretical weight as the basis for delivery, and it is important to have a good understanding of how to accurately calculate theoretical weight.
There is a common misconception regarding the calculation of the theoretical weight of rebar, which is that different classes and rolling methods have different calculation methods.
In reality, the weight calculation formulas for Grade II deformed steel bar (HRB335), Grade III deformed steel bar (HRB400) or Grade IV deformed steel bar (HRB500), whether hot-rolled or cold-rolled, and Whether for common use or seismic use, they are consistent.
Rebar Weight Chart
| Diameter | Weight (kg/m) |
| 6 | 0.22 |
| 6.5 | 0.261 |
| 8 | 0.395 |
| 10 | 0.617 |
| 12 | 0.888 |
| 14 | 1.21 |
| 16 | 1.58 |
| 18 | two |
| 20 | 2.47 |
| 22 | 3 |
| 25 | 3.86 |
| 28 | 4,837 |
| 32 | 6.31 |
| 36 | 7.99 |
| 40 | 9.87 |
