Channel bar specific weight: weight of 1 meter by size
A channel bar is a type of steel rolled metal, a metal profile with a U-shaped cross-section. It is made from ordinary-quality carbon steel by cold or hot rolling, and also from quality and low-alloy steels.
In the shape of a channel bar, the following are distinguished:
- flanges - side faces that can be parallel or have an inclination of the inner sides, and, depending on channel type, can be equal or different in height;
- web, the bridge between the flanges, which has different thickness depending on the type.
High standards of rolled metal production are supported by certification norms specified in GOST standards. There are many such documents that define the parameters of one or another type of rolled metal, including channel bars. Compliance by the manufacturer with GOST production standards is a guarantee of product quality.
There are general designations written in the product index next to the number indicating profile height. Categories of shapes and sizes are represented as follows:
- U - profile flanges have an inclination of the inner walls,
- P - flanges are parallel,
- E - economical profile with parallel flanges,
- L - lightweight channel with parallel flanges,
- S - special-purpose.
Rolling can have different accuracy. According to GOST standards, this parameter must also be specified in the product accompanying documents:
- high rolling accuracy - “A”,
- ordinary, average accuracy - “V”,
- increased accuracy - “B”.
Channel bar weight and use
The area of channel bar use is quite wide because the weight of 1 meter of channel bar is relatively low, and also because of the profile’s low metal consumption and high strength. Channel bars are used in many industries, mainly as a structural element of buildings, architectural compositions, bridges, railway car construction, machine tools and automobile construction.
The main use of channel bar is in construction as an element for reinforcing reinforced concrete structures, or as an independent building material for erecting frame structures, installing floors and so on.
For correct load calculations when planning a structure and supports, it is necessary to know exactly how much a channel bar weighs. There is no need to weigh the whole product. Knowing the weight of 1 m of channel bar, it is very easy to calculate the mass of the entire length.
| Channel, index | Dimensions: width x height, mm | Web thickness, mm | Flange thickness, mm | Weight of 1 linear meter, kg |
|---|---|---|---|---|
| 5 | 50x32 | 4.4 | 7.0 | 4.84 |
| 6.5 | 65x36 | 4.4 | 7.2 | 5.9 |
| 8 | 80x40 | 4.5 | 7.4 | 7.05 |
| 10 | 100x46 | 4.5 | 7.6 | 8.59 |
| 12 | 120x52 | 4.8 | 7.8 | 10.4 |
| 14 | 140x58 | 4.9 | 8.1 | 12.3 |
| 16 | 160x64 | 5.0 | 8.4 | 14.2 |
| 16a | 160x68 | 5.0 | 9.0 | 15.3 |
| 18 | 180x70 | 5.1 | 8.7 | 16.3 |
| 18a | 180x74 | 5.1 | 9.3 | 17.4 |
| 20 | 200x76 | 5.2 | 9.0 | 18 |
| 22 | 220x82 | 5.4 | 9.5 | 21 |
| 24 | 240x90 | 5.6 | 10.0 | 24 |
| 27 | 270x95 | 6.0 | 10.5 | 27.7 |
| 30 | 300x100 | 6.5 | 11.0 | 31.8 |
| 33 | 330x105 | 7.0 | 11.7 | 36.5 |
| 36 | 360x110 | 7.5 | 12.6 | 41.9 |
| 40 | 440x115 | 8.0 | 1.5 | 48.3 |
Channel bar is used not only as a structural element. It is often used to strengthen walls, roofs and floors. The U-shaped profile withstands different types of loads well, both axial and bearing loads.
Frequently Asked Questions
Can the density of channel bar be used for precise calculations?
The density and weight values for channel bar in this article are reference values. They are suitable for preliminary estimates, but design, construction, production and other critical calculations should be checked against standards, material datasheets or measurement results.
Why can the actual weight of channel bar differ from the table?
The actual weight of channel bar depends on composition, moisture, temperature, porosity, fraction size, material grade and measurement conditions. Because of this, real values may differ from the average table data.
How do you calculate the mass of channel bar from density?
For an approximate calculation, use the formula: mass = density × volume. If the density of channel bar is given in kg/m³ and the volume is in m³, the result will be in kilograms.