Steel flat bar specific weight: weight of 1 meter

Steel is one of the most versatile materials used in construction, mechanical engineering and other production areas. Steel semi-finished products and blanks are later used to make various structures and parts. Steel flat bar is one such semi-finished product with a wide range of applications.

Flat bar as a type of rolled metal can be used independently in metal structures or serve as a blank for further processing and manufacturing other products.

What steel flat bar is and its types

Steel flat bar, as a type of section rolled metal, has parameters specified in GOST standards. The main characteristics of flat bar are a solid profile with a rectangular cross-section. This type of rolled metal is produced from different steel grades, which became the basis for classification:

• carbon structural steel - St 10, 20, 35, 45, 40Kh;
• ordinary carbon steel - St 0, 1, 2, 3;
• low-alloy and alloy steel: St 09G2, 09G2S, 09G2D and other grades;
• spring steel: St 60G, 60S2, 65, 65G and other grades.

The most widely used steel flat bar is manufactured according to GOST 103-76. Less common, but also demanded, are other types of steel flat bar:

• hot-rolled spring bars,
• structural bars,
• wide strip rolled products,
• galvanized strip,
• hot-rolled tool steel strip,
• strips made of special heat-resistant and corrosion-resistant steels for producing steam turbines.

Within GOST 103-76, strip width varies from 11 to 200 mm, and thickness from 4 to 60 mm. Depending on product length, strips are divided into:

• measured length,
• random length,
• multiple measured length.

There are some production features of hot-rolled steel flat bar:

• for producing strip from 3 to 10 meters long, mainly low-alloy, phosphorous or medium-quality carbon steel is used;
• strips in the range from 2 to 6 meters are produced from high-quality carbon or alloy steel;
• the maximum strip length must not exceed 12 meters.

Depending on rolling accuracy, two classes are distinguished and must be marked:

• normal accuracy - “V”,
• increased accuracy - “B”.

Weight of steel flat bar

When calculating structural load, it is necessary to accurately calculate the weight of all its elements. The weight of one linear meter of steel flat bar depends on the GOST and rolled metal dimensions. Here is an example of the most popular type of rolled product: the specific weight of steel flat bar. The table contains dimensions and linear weight of steel flat bar at the minimum and maximum thickness for the specified width, where C is width and A is thickness.

Thus, the parameters of the most demanded flat rolled metal are as follows: the specific weight of a 40x4 strip is 1.26 kg, and the weight of a 25x4 steel flat bar is 0.78 kg.