The parameters of one of the most popular types of rolled metal - steel equal-flange angle - are determined by GOST 8509-93. The use of GOST in the production of such products not only unifies their types, but also improves the interaction between producers and consumers. The dimensions and weight of equal-flange steel angles, which are manufactured in full compliance with the regulatory document, make it possible to use these characteristics to accurately calculate material consumption, which is very important when carrying out construction and repair work.
Photo of equal-flange steel angle
Varieties of equal-flange steel angles
Equal angle corners are divided into several categories depending on the manufacturing method and the raw materials used for their production. All geometric parameters, as well as permissible deviations for them, are regulated by two regulatory documents:
- GOST 8509-93 (production of hot-rolled equal-flange angles);
- GOST 19771-93 (production of equal-flange steel angles obtained by bending).
You can familiarize yourself with the GOST requirements and the range of hot-rolled and bent equal-flange steel angles by downloading the relevant documents in pdf format from the links below.
GOST 8509-93 Hot-rolled equal flange steel angles. Assortment
GOST 19771-93 Equal-flange bent steel angles. Assortment
The difference between equal-shelf and unequal-shelf products is that the former have shelves of the same dimensions (width), while the latter have different shelves. Hot-rolled corner profiles are manufactured using the following technology: a hot billet is rolled between the shafts of a special rolling mill, where, under pressure, it is formed into a product with the required geometric shape and dimensions.
In order to produce a metal corner of the bent type, rolled sheets of the appropriate size are bent on roll forming equipment or on pipe mills. Due to the peculiarities of their production, hot-rolled profiles are characterized by higher strength, but bent corners also have their advantages: high dimensional accuracy, light weight, wide range.
Equal angle corner is a popular material both in industrial construction and in private households
The range of equal angle angles includes products from:
- high strength steel;
- alloyed, high-alloy steel;
- alloys characterized by increased heat resistance, heat resistance and corrosion resistance.
The most common material for the production of bent angles is also carbon steel, the characteristics of which must comply with GOST 380-94.
Application
Due to the manufacturability of its shape, good weldability, strength and resistance to various types of loads, steel angles are used almost everywhere. You can buy a steel corner corner either at metal wholesale depots in your city or on the Internet. It is used primarily in construction as one of the main elements of load-bearing, heavily loaded metal structures - floors, spans, trusses, etc.
The corner profile shape is ideal for making door and window openings. An unequal angle, which has a different moment of resistance with respect to different axes, is well suited for the manufacture of curved structures, such as arches.
Small standard sizes are used in the manufacture of furniture to strengthen its frame. Stainless steel profiles are used for interior decoration.
The corner is widely used in mechanical engineering - in the production of cars, carriages, large-sized and special equipment.
During electrical installation work, the corner profile is used as a basis for fastening equipment and cables. An angle made of low-alloy steel is used for high loads and the need to protect structures from aggressive environments and high humidity.
Main characteristics
Using the assortment table for equal-flange steel angles, you can find out their various parameters: weight of one linear meter; profile cross-sectional area and other dimensions. To calculate the mass of a hot-rolled or bent profile, the density of the material from which it is made is taken as 7850 kg/m3.
Weight per linear meter of equal angle angle
The radii of curvature of the profile of equal-flange steel angles, given in the table with the assortment, are not controlled parameters, but they are necessary for calibrating products. In the assortment table, the following designations of sizes and other parameters that characterize steel angles are used:
- t – shelf wall thickness;
- X0, Y0 – distances from the outer edges of the corner flanges to its center of gravity;
- R – radius of curvature;
- b – shelf width;
- r – radius of curvature of the edges of the shelves;
- I – moment of inertia;
- i – radius of gyration;
- F – profile cross-sectional area;
- Ixy is the moment of inertia that is developed by centrifugal forces.
Designations of the main geometric parameters of hot-rolled angles. Below is a table of the assortment of this type of rolled metal
Table 1: Range of hot-rolled angles
Equal-flange steel angles can be of normal precision (marked with the letter “B”) and high-precision (marked with the letter “A”). GOST allows the following deviations in the width of shelves:
- for products No. 2–4.5 – ±1 mm;
- No. 5–9 – ±1.5 mm;
- No. 10–15 – ±2 mm;
- No. 16–20 – ±3 mm;
- No. 22–25 – ±4 mm.
The corner flanges must be perpendicular to each other within the tolerances according to the table
The thickness of the flange of an equal-flange steel angle in accordance with GOST may have the following deviations, measured in millimeters (see table).
The customer of a batch of equal-flange steel angles can agree with the product manufacturer that instead of permissible deviations in wall thickness, a tolerance for deviations in the mass of the product will be used, which can be for profiles:
- No. 2–7.5: from –5 to +3% (classes “A” and “B”);
- with No. over 7.5: ±2.5% (class “A”), from – 5 to +3% (class “B”).
Deviations in corner sizes depending on class
According to the provisions of GOST, steel angles belonging to the category of equal flanges can be supplied to the customer with a length of 3–12 m. By prior agreement between the customer and the manufacturer, these products can be supplied with a length exceeding 12 meters. Thus, GOST stipulates the possibility of tempering equal-flange steel angles of the following sizes in the longitudinal direction:
- measured length;
- measured size with the inclusion of products of unmeasured length in the batch (the number of such corners should not exceed 5% of the total volume);
- length, which is a multiple of the measured length;
- a length that is a multiple of the measured length, when the batch contains angles of unmeasured length (their number should not exceed 5% of the total volume);
- unmeasured length;
- length, located in an unmeasured interval.
An educational video from Soviet times, covering in detail the nuances of the production of long rolled metal products.
For the length of measured steel angles and products whose length is a multiple of the measured length, GOST establishes the following permissible deviations:
- no more than 4 meters – 30 mm;
- from 4 to 6 meters – 50 mm;
- over 6 meters – 70 mm;
- from 4 to 7 meters (at customer’s request) – 40 mm;
- over 7 meters (by prior agreement with the customer) - 5 mm for each additional meter of product.
Size tables. Weight 1 meter
Table 1. Equal flange hot-rolled angle GOST 8509-93 .
| Corner number | mm | Cross-sectional area cm2 | Reference values for axes | Macca 1m corner, kg | ||||||||||||||
| b | t | R | r | x - x | x0-x0 | U0-U0 | Jxy, cm4 | Y0, cm | ||||||||||
| Jx, cm4 | Ix, cm3 | ix, cm | Jy0min, cm4 | ix0max, cm | Jy0min, cm | Wy0, cm3 | iy0min, cm | |||||||||||
| 2 | 20 | 3 4 | 3,5 | 1,2 | 1,13 1,46 | 0,40 0,50 | 0,28 0,37 | 0,59 0,58 | 0.6З 0.78 | 0,75 0,73 | 0,17 0,22 | 0,20 0,24 | 0,39 0,38 | 0,23 0,28 | 0,60 0,64 | 0,89 1,15 | ||
| 2,5 | 25 | 3 4 5* | 1,43 1,86 2,27 | 0,81 1,03 1,22 | 0,46 0,59 0,71 | 0,75 0,71 0,73 | 1,29 1,62 1,91 | 0,95 0,93 0,92 | 0,34 0,44 0,53 | 0,33 0,41 0,47 | 0,49 0,48 0,48 | 0,47 0,59 0,69 | 0,73 0,76 0,80 | 1,27 1,46 1,78 | ||||
| 2,8 | 28 | 3 | 4,0 | 1,3 | 1,62 | 1,16 | 0,58 | 0,85 | 1,84 | 1,07 | 0,48 | 0,42 | 0,55 | 0,68 | 0,80 | 1,27 | ||
| 3 | 30 | 3 4 5* | 4,0 | 1,3 | 1,74 2,27 2,78 | 1,45 1,84 2,20 | 0,67 0,87 1,06 | 0,91 0,80 0,89 | 2,30 2,92 3,47 | 1.15 1.1З 1.12 | 0,60 0,77 0,94 | 0,53 0,61 0,71 | 0,59 0,58 0,58 | 0,85 1,08 1,27 | 0,85 0,89 0,93 | 1,36 1,78 2,18 | ||
| 3,2 | 32 | 3 | 4,5 | 1,5 | 1,36 2,43 | 1,77 2,26 | 0,77 1,0 | 0,97 0,96 | 2,80 3,58 | 1,23 1,21 | 0,74 0,94 | 0,59 0,71 | 0,63 0,62 | 1,03 1,32 | 0,89 0,94 | 1,46 1,91 | ||
| 4 | ||||||||||||||||||
| 3,5 | 35 | 3 | 2,04 2,17 3,28 | 2,35 3,01 3,61 | 0,93 1,21 1,47 | 1,07 1,06 1,05 | 3,72 4,76 5,71 | 1,35 1,33 1,32 | 0,97 1,25 1.52 | 0,71 0,88 1,02 | 0,69 0,68 0,68 | 1,37 1,75 2,10 | 0,97 1,01 1,05 | 1.60 2,10 2,58 | ||||
| 4 | ||||||||||||||||||
| 5 | ||||||||||||||||||
| 4 | 40 | 3 4 5 b* | 5,0 | 1,7 | 2,35 3,08 3,79 4,48 | 3,55 4,58 5.53 6,41 | 1,22 1,60 1,95 2,30 | 1.23 1,22 1,21 1,20 | 5,63 7,26 8,75 10,13 | 1,55 1,53 1,52 1.50 | 1,47 1,90 2,30 2,70 | 0,95 1,19 1,39 1,58 | 0,79 0,78 0,78 0,78 | 2,08 2,68 3,22 3,72 | 1,09 1,13 1,17 1,21 | 1,85 2,42 2,98 3,52 | ||
| 4,5 | 45 | 3 4 5 6* | 2,65 3,48 4,29 5,08 | 5,13 6,63 8,03 9,35 | 1,56 2,04 2,51 2,95 | 1,39 1,38 1,37 1,36 | 8,13 10,52 12,74 14,80 | 1,75 1,74 1,72 1,71 | 2,12 2,74 3,33 3,90 | 1,24 1,54 1,81 2.06 | 0,89 0,89 0,88 0,88 | 3,00 3,89 4,71 5,45 | 1,21 1,26 1,30 1,34 | 2,08 2,73 3,37 3,99 | ||||
| 5 | 50 | 3 4 5 6 7* 8* | 5,5 | 1,8 | 2,96 3,89 4,80 5,69 6,56 7,41 | 7,11 9,21 11,20 13,07 14.84 16,51 | 1,94 2,54 3,13 3,69 4,23 4,76 | 1,55 1,54 1,53 1,52 1,50 1,49 | 11,27 14,63 17,77 20,72 23.47 26,03 | 1,95 1,94 1,92 1,91 1,89 1,87 | 2,95 3,80 4,63 5,43 6,21 6,98 | 1,57 1,95 2,30 2,63 2,93 3,22 | 1,00 0,99 0,98 0,98 0.97 0,97 | 4,16 5,42 6,57 7,65 8,63 9,52 | 1,33 1,38 1,42 1,46 1,50 1,53 | 2,32 3,05 3,77 4,47 5,15 5,82 | ||
| 5,6 | 56 | 4 5 | 6,0 | 2,0 | 4,38 5,41 | 13,10 15,97 | 3,21 3,96 | 1,73 1,72 | 20.79 25,36 | 2,18 2,16 | 5,41 6,59 | 2,52 2,97 | 1,11 1,10 | 7,69 9,41 | 1,52 3,57 | 3,44 4,25 | ||
| 6* | 60 | 4 | 7,0 | 2,3 | 4,72 | 16,21 | 3,70 | 1,85 | 25,69 | 2,33 | 6,72 | 2,93 | 1,19 | 9.4S | 1,62 | 3,71 | ||
| 5 | 5,83 | 19,79 | 4,56 | 1,84 | 31,40 | 2,32 | 8,18 | 3,49 | 1,18 | 11,61 | 1,66 | 4,58 | ||||||
| 6 | 6,92 | 23,21 | 5,40 | 1,83 | 36,81 | 2,31 | 9,60 | 3,99 | 1,18 | 13,60 | 1,70 | 5,43 | ||||||
| 8 | 9,04 | 29,55 | 7,00 | 1,81 | 46,77 | 2,27 | 12,34 | 4,90 | 1,17 | 17,22 | 1,78 | 7,10 | ||||||
| 10 | 11,08 | 35,32 | 8,52 | 1,79 | 55,64 | 2,24 | 15,00 | 5,70 | 1,16 | 20,32 | 1,85 | 8,70 | ||||||
| 6,3 | 63 | 4 | 4,96 | 18,86 | 4,09 | 1,95 | 29,90 | 2,45 | 7,81 | 3,26 | 1,25 | 11,00 | 1,69 | 3,90 | ||||
| 5 | 6,13 | 23,10 | 5,05 | 1,94 | 36.8O | 2,44 | 9,52 | 3,87 | 1,25 | 13,70 | 1,74 | 4,81 | ||||||
| 6 | 7,28 | 27,06 | 5,98 | 1,93 | 42,91 | 2,43 | 11,18 | 4,44 | 1,24 | 15,90 | 1,78 | 5,72 | ||||||
| 7 | 70 | 4,5 | 8,0 | 2,7 | 6,20 | 29,04 | 5,67 | 2,16 | 46,03 | 2,72 | 12,04 | 4,53 | 1,39 | 17,00 | 1.8S | 4,87 | ||
| 5 | 6,86 | 31,94 | 6,27 | 2,16 | 50,67 | 2,72 | 13,22 | 4,92 | 1,39 | 18,70 | 1,90 | 5,38 | ||||||
| 6 | 8,15 | 37,58 | 7,43 | 2,15 | 59,64 | 2,71 | 15,52 | 5,66 | 1,38 | 22,10 | 1,94 | 6,39 | ||||||
| 7 | 9,42 | 42.98 | 8,57 | 2.14 | 68,19 | 2,69 | 17,77 | 6,31 | 1,37 | 25,20 | 1,99 | 7,39 | ||||||
| 8 | 10,67 | 48,16 | 9,68 | 2,12 | 76,35 | 2,68 | 19,97 | 6,99 | 1,37 | 28,20 | 2,02 | 8,37 | ||||||
| 10* | 13,11 | 57,90 | 11,82 | 2,10 | 91,52 | 2,64 | 24,27 | 8,17 | 1,36 | 33,60 | 2,10 | 10,29 | ||||||
| 7,5 | 75 | 5 | 9,0 | 3,0 | 7,39 | 39,53 | 7,21 | 2,31 | 62,65 | 2,91 | 16,41 | 5,74 | 1,49 | 23,10 | 2,02 | 5,80 | ||
| 6 | 8,78 | 46,57 | 8,57 | 2,30 | 73,87 | 2,90 | 19,28 | 6,62 | 1,48 | 27,30 | 2,06 | 6,89 | ||||||
| 7 | 10,15 | 53,34 | 9,89 | 2,29 | 84,61 | 2,89 | 22,07 | 7,43 | 1,47 | 31,20 | 2,10 | 7,96 | ||||||
| S | 11,50 | 59,84 | 11,18 | 2,28 | 94,89 | 2,87 | 24,80 | 8,16 | 1,47 | 35,00 | 2,15 | 9,02 | ||||||
| 9 | 12,83 | 66,10 | 12,43 | 2,27 | 104,72 | 2,86 | 27,48 | 8,91 | 1,46 | 38,60 | 2,18 | 10,07 | ||||||
| 8 | 80 | 5,5 | 9,0 | 3,0 | 8,63 | 52,68 | 9,03 | 2,47 | 83,56 | 3,11 | 21,80 | 7,10 | 1,59 | 30,90 | 2,17 | 6,78 | ||
| 6 | 9,38 | 56,97 | 9,ao | 2,47 | .90,40 | 3,11 | 23,54 | 7,60 | 1,58 | 33,40 | 2,19 | 7,36 | ||||||
| 7 | 10,85 | 65,31 | 11,32 | 2,45 | 103,60 | 3,09 | 26,97 | 8,55 | 1,58 | 38,30 | 2,23 | 8,51 | ||||||
| & | 12,30 | 73,36 | 12,80 | 2,44 | 116,39 | 3,08 | 30,32 | 9,44 | 1,57 | 43,00 | 2,27 | 9,65 | ||||||
| 10* | 15,14 | 83,58 | 15,67 | 2,42 | 140,31 | 3,04 | 36,85 | 11,09 | 1,56 | 56,70 | 2,35 | 11,88 | ||||||
| 12* | 17,90 | 102,74 | 18,42 | 2,40 | 162,27 | 3,01 | 43,21 | 12,62 | 1,55 | 59,50 | 2,42 | 14,05 | ||||||
| 9 | 90 | 6 | 10,0 | 3,3 | 10,61 | 82,10 | 12,49 | 2,78 | 130,00 | 3,50 | 33,97 | 9,88 | 1,79 | 48,10 | 2,43 | 8,33 | ||
| 7 | 12,28 | 94,30 | 14,45 | 2,77 | 149,67 | 3,49 | 38,94 | 11,15 | 1,78 | 55,40 | 2,47 | 9,64 | ||||||
| 8 | 13,93 | 106,11 | 16,36 | 2,76 | 168,42 | 3,48 | 43,80 | 12,34 | 1,77 | 62,30 | 2,51 | 10,93 | ||||||
| 9 | 15,60 | 118,00 | 18,29 | 2,75 | 186,00 | 3,46 | 48,60 | 13,48 | 1,77 | 68,00 | 2,55 | 12,20 | ||||||
| 10* | 17,17 | 128,66 | 20,07 | 2,74 | 203,93 | 3,45 | 53,27 | 14,54 | 1,76 | 75,30 | 2,59 | 13,48 | ||||||
| 12* | 20,33 | 149,67 | 23,85 | 2,71 | 235,88 | 3,41 | 62,40 | 16,53 | 1,75 | 86,20 | 2,67 | 15,96 | ||||||
| 10 | 100 | 6 | 12,0 | 4,0 | 12,82 | 122,10 | 16,69 | 3,09 | 193,46 | 3,89 | 50,73 | 13,38 | 1,99 | 71,40 | 2,68 | 10,06 | ||
| 7 | 13,75 | 130,59 | 17,90 | 3,08 | 207,01 | 3,88 | 54,16 | 14,13 | 1,98 | 76,40 | 2,71 | 10,79 | ||||||
| 8 | 15,60 | 147,19 | 20,30 | 3,07 | 233,46 | 3,87 | 60,92 | 15,66 | 1,98 | 86,30 | 2,75 | 12,25 | ||||||
| 10 | 19,24 | 178,95 | 24,97 | 3,05 | 283,83 | 3,84 | 74,08 | 18,51 | 1,96 | 110,00 | 2,83 | 15,10 | ||||||
| 12 | 22,80 | 208,90, | 29,47 | 3,03 | 330,95 | 3,81 | 86,84 | 21,10 | 1,95 | 122,00 | 2,91 | 17,90 | ||||||
| 14 | 26,28 | 237,15 | 33,83 | 3,00 | 374,98 | 3,78 | 99,32 | 23,49 | 1,94 | 138,00 | 2,99 | 20,63 | ||||||
| 15* | 27.99 | 250,68 | 35,95 | 2,99 | 395,87 | 3,76 | 105,48 | 24,62 | 1,94 | 145,00 | 3,03 | 21,37 | ||||||
| 16 | 29,68 | 263,82 | 38,04 | 2,98 | 416,04 | 3,74 | 111,61 | 25,79 | 1,94 | 152,00 | 3,06 | 23,30 | ||||||
| 11 | 110 | 7 | 15,15 | 175,61 | 21,83 | 3,40 | 278,54 | 4,29 | 72,68 | 17,36 | 2,19 | 106,00, | 2,96 | 11,89 | ||||
| 8 | 17,20 | 198D7 | 24,77 | 3,39 | 314,51 | 4,28 | 81,83 | 19,29 | 2,18 | 116,00 | 3,00 | 13,50 | ||||||
| 12 | 120 | 8 | 12,0 | 4,0 | 18,80 | 259,75 | 29,68 | 3,72 | 412,45 | 4,68 | 107,04 | 23,29 | 2,39 | 153,00 | 3,25 | 14,76 | ||
| 10 | 23,24 | 317,16 | 36,59 | 3,69 | 503,79 | 4,66 | 130,54 | 27,72 | 2,37 | 187,00 | 3,33 | 18,24 | ||||||
| 12 | 27,60 | 371,80 | 43,30 | 3,67 | 590,28 | 4,62 | 153,33 | 31,79 | 2,36 | 218,00 | 3;41 | 21,67 | ||||||
| 15 | 33,99 | 448,90 | 52,96 | 3,63 | 711,32 | 4,57 | 186,48 | 37,35 | 2,34 | 262,00 | 3,53 | 26.68 | ||||||
| 12,5 | 125 | 8 | 14,0 | 4,6 | 19,69 | 294,36 | for, 20 | 3,87 | 466,76 | 4,87 | 121,98 | 25,67 | 2,49 | 172,00 | 3,36 | 15,46 | ||
| 9 | 22,0 | 327,48 | 36,00 | 3,86 | 520,00 | 4,86 | 135,58 | 28,26 | 2,48 | 192,00 | 3,40 | 17,30 | ||||||
| 10 | 24,33 | 359,82 | 39,74 | 3,85 | 571,04 | 4,84 | 148,59 | 30,45 | 2,47 | 211,00 | 3,45 | 19,10 | ||||||
| 12 | 2M9 | 422,23 | 47,06 | 3,82 | 670,02 | 4,82 | 174,43 | 34,94 | 2,46 | 248,00 | 3,53 | 22,68 | ||||||
| 14 | 33>37 | 481,76 | 54,17 | 3,80 | 76190 | 4,78 | 199,62 | 39,10 | 2,45 | 232,00 | 3,61 | 26,20 | ||||||
| 16 | 37,77 | 538,56 | 61,09 | 3,78 | 852,84 | 4,75 | 224,29 | 43,10 | 2,44 | 315,00 | 3,68 | 29,65 | ||||||
| 14 | 140 | 9 | 14,0 | 4,6 | 24,72 | 405,72 | 45,55 | 4,34 | 739,42 | 5,47 | 192,03 | 35,92 | 2,79 | 274,00 | 3,76 | 19,41 | ||
| 10 | 27,33 | 512,29 | 50,32 | 4,33 | 813,62 | 5,46 | 210,96 | 39,05 | 2,78 | 301,00 | 3,82 | 21,45 | ||||||
| 12 | 32,49 | 602,43 | 59,66 | 4,31 | 956,98 | 5,43 | 248,01 | 44,97 | 2,76 | 354,00 | 3,90 | 25,50 | ||||||
| Angles marked with an asterisk are manufactured according to customer requirements. GOST 8509-93 provides profile numbers; 16, 18, 20, 22 and 25, as well as profiles manufactured by agreement between manufacturers and consumers. The cross-sectional area and reference values are calculated based on the nominal dimensions. Steel density 7.85 g/cm3. | ||||||||||||||||||
Table 2. Metal unequal angle GOST 8510-93 .
| Size, mm | Weight 1 m, kg | Meters per ton | ||
| B | b | t | ||
| 25 | 16 | 3,0 | 0,91 | 1098,90 |
| 32 | 20 | 3,0 | 1,17 | 854,70 |
| 4,0 | 1,52 | 657,89 | ||
| 40 | 25 | 3,0 | 1,48 | 675,68 |
| 4,0 | 1,94 | 515,46 | ||
| 5,0 | 2,37 | 421,94 | ||
| 45 | 28 | 3,0 | 1,68 | 595,24 |
| 4,0 | 2,20 | 454,55 | ||
| 50 | 32 | 3,0 | 1,90 | 526,32 |
| 4,0 | 2,40 | 416,67 | ||
| 56 | 36 | 4,0 | 2,81 | 355,87 |
| 5,0 | 3,46 | 289,02 | ||
| 63 | 40 | 4,0 | 3,17 | 315,46 |
| 5,0 | 3,91 | 255,75 | ||
| 6,0 | 4,63 | 215,98 | ||
| 8,0 | 6,03 | 165,84 | ||
| 75 | 50 | 5,0 | 4,79 | 208,77 |
| 6,0 | 5,69 | 175,75 | ||
| 8,0 | 7,43 | 134,59 | ||
| 90 | 56 | 6,0 | 6,70 | 149,25 |
| 100 | 63 | 6,0 | 7,53 | 132,80 |
| 7,0 | 8,70 | 114,94 | ||
| 8,0 | 9,87 | 101,32 | ||
| 10,0 | 12,14 | 82,37 | ||
| 110 | 70 | 6,5 | 8,98 | 111,36 |
| 8,0 | 10,93 | 91,49 | ||
| 125 | 80 | 8,0 | 12,58 | 79,49 |
| 10,0 | 15,47 | 64,64 | ||
| 12,0 | 18,34 | 54,53 | ||
| 140 | 90 | 8,0 | 14,13 | 70,77 |
| 10,0 | 17,46 | 57,27 | ||
| 160 | 100 | 9,0 | 17,96 | 55,68 |
| 10,0 | 19,85 | 50,38 | ||
| 12,0 | 23,58 | 42,41 | ||
| 14,0 | 27,26 | 36,68 | ||
| 180 | 110 | 10,0 | 22,20 | 45,05 |
| 12,0 | 26,40 | 37,88 | ||
| 200 | 125 | 12,0 | 29,74 | 33,62 |
| 14,0 | 34,43 | 29,04 | ||
| 16,0 | 39,07 | 25,60 | ||
Equal and unequal angles are: hot rolled ( GOST 8510-86 and GOST 8509-93 ) and bent ( GOST 19771-93 and GOST 19772-93 ). The former are stronger and are used in structures designed for increased loads. Bent angles are produced from rolled sheets using roll forming units.
Table 3. Equal-flange bent angle GOST 19771-93 . Dimensions and weight of angles made of carbon boiling and semi-calm steel of ordinary quality, high-quality carbon steel with a tensile strength of no more than 460 N/mm2
| b, mm | S, mm | R, no more, mm | Weight 1 m, kg | Number of meters 1 t |
| 36 | 3 | 4 | 1,569 | 637,2 |
| 40 | 2,5 | 3 | 1,485 | 673,3 |
| 40 | 3 | 4 | 1,758 | 568,9 |
| 50 | 3 | 4 | 2,229 | 448,7 |
| 50 | 4 | 6 | 2,907 | 344,0 |
| 60 | 3 | 4 | 2,700 | 370,4 |
| 60 | 4 | 6 | 3,535 | 282,9 |
| 70 | 4 | 6 | 4,163 | 240,2 |
| 80 | 3 | 4 | 3,642 | 274,6 |
| 80 | 4 | 6 | 4,791 | 208,7 |
| 80 | 5 | 7 | 5,924 | 168,8 |
| 80 | 6 | 9 | 7,011 | 142,6 |
| 80 | 7 | 9 | 8,113 | 123,3 |
| 100 | 4 | 6 | 6,047 | 165,4 |
| 100 | 5 | 7 | 7,494 | 133,4 |
| 100 | 6 | 9 | 8,895 | 112,4 |
| 100 | 7 | 9 | 10,31 | 96,99 |
| 120 | 5 | 7 | 9,064 | 110,3 |
| 120 | 6 | 9 | 10,78 | 92,77 |
Table 4. Unequal bent angle GOST 19772-93 . Dimensions and weight of angles made of carbon boiling and semi-calm steel of ordinary quality, high-quality carbon steel with a tensile strength of no more than 460 N/mm2
| B, mm | b, mm | S, mm | R, no more, mm | Weight 1 m, kg | Number of meters in 1 ton |
| 32 | 25 | 2 | 3 | 0.3 365 | 1195 |
| 32 | 25 | 2,5 | 3 | 1,034 | 967,3 |
| 50 | 35 | 3,2 | 5 | 1,934 | 504,1 |
| 60 | 40 | 3 | 4 | 2,229 | 448,7 |
| 70 | 50 | 4 | 6 | 3,535 | 232,9 |
| 30 | 63 | 4 | 6 | 4,257 | 234,9 |
| 35 | 35 | 4 | 6 | 3,535 | 232,9 |
| 90 | 70 | 4 | 6 | 4,791 | 208,7 |
| 100 | 65 | 4 | 6 | 4,943 | 202,1 |
| 105 | 100 | 3 | 4 | 4,702 | 212,7 |
| 115 | 65 | 5 | 7 | 6,709 | 149,1 |
| 120 | 100 | 8 | 12 | 12,33 | 77,63 |
| 100 | 140 | 6 | 9 | 14,55 | 68,74 |
Table 5. Unequal bent corner. Dimensions and weight of angles made of carbon semi-quiet and calm steel of ordinary quality, high-quality carbon steel with a tensile strength of more than 460 N/mm2 and low-alloy
| B, mm | b, mm | S, MM | R, no more, mm | Weight 1 m, kg | Number of meters in 1 ton |
| 40 | 25 | 2,5 | 6 | 1,165 | 858,0 |
| 70 | 50 | 4 | 10 | 3,481 | 237,3 |
| 35 | 67 | 4 | 10 | 4,485 | 222,9 |
| 90 | 70 | 4 | 10 | 4,737 | 211,1 |
| 110 | 90 | 5 | 10 | 7,443 | 134,4 |
| 115 | 65 | 5 | 10 | 6,653 | 150,2 |
| 147 | 125 | 8 | 20 | 15,93 | 62,77 |
| 152 | 100 | 5,5 | 12 | 10,37 | 96,44 |
| 155 | 100 | 6 | 14 | 11,38 | 87,34 |
At metallurgical enterprises, angles produced in accordance with GOST 8509-93 and GOST 8510-93 are obtained by plastic deformation of a heated steel billet (bloom). The rolled product range is formed in strict accordance with the established range of standard sizes, taking into account permissible deviations and accuracy classes.
Thus, the curvature coefficient for hot-rolled angle steel is set to no more than 0.4% , and the linear error in the length of the product is no more than 0.75% .
At the same time, accuracy classes are distinguished: “ A ” - high, “ B ” - increased and “ C ” - normal.
When developing various designs, not only at the professional level, but also for private use, it is also important to take into account the steel grade of the product, as well as the tempering dimension of the angle. Its implementation is carried out in measured and multiples of measured lengths, that is, from 4 m to 12 m or unmeasured. There may be trimmings and substandard ones, which can be purchased at reduced prices.
Find out more about angle steel
- In addition to low-alloy structural grades of steel, the angle is made from high-alloy and even stainless steel raw materials, which, like galvanized products, are used in the food industry, including in aggressive environments.
- The angle works great for compression-tension and bending, of course taking into account axial moments, but it cannot be twisted around the longitudinal axis.
- Despite their resistance to temperature changes, structures made of angle steel can significantly lose their load-bearing capacity after just 5-10 minutes of exposure to an open flame. Therefore, in order to increase fire resistance, they are repeatedly coated with fire-retardant paints, and cladding with basalt wool can raise the fire resistance threshold of the metal to 150 minutes.
- Anti-corrosion treatment of the corner is also mandatory after completion of installation work.
Moreover, before applying any coatings, rust, slag and scale should be removed from welds, dirt and grease stains. Standard decorative and protective painting includes three layers: primer (strengthens adhesion), barrier and finishing (performed with enamel compounds). - Delivery of rolled metal products to the place of sale or directly to the consumer is mostly carried out by road or by rail. For automobile loadings, a limit is set to no more than 25 tons and 12 m in length, and a standard loading of a railway car should not exceed 70 tons of corners.
