Assortment equal angle corner

GOST 8509-93

b - shelf width; t—thickness of the flange;

R—radius of internal curvature; r is the radius of curvature of the shelves;

F is the cross-sectional area; i—radius of gyration;

I—moment of inertia; Ixy is the centrifugal moment of inertia;

x0 is the distance from the center of gravity to the outer edge of the shelf.

Angle number	b	t	R	r	F, cm 2	Reference values for axes										Weight 1 m, kg
	b	t	R	r		x - x			x 0 — x 0		y 0 - y0			Ixy, cm4	x0, cm
	mm					Ix, cm4	Wx, cm3	ix, cm	Ixо max, cm4	ixo max, cm	Iyо min, cm 4	Wyo, cm 3	iyо min, cm	Ixy, cm4	x0, cm
L20x3	20	3	3,5	1,2	1,13	0,4	0,28	0,59	0,63	0,75	0,17	0,2	0,39	0,23	0,6	0,89
L20x4	20	4	3,5	1,2	1,46	0,5	0,37	0,58	0,78	0,73	0,22	0,24	0,38	0,28	0,64	1,15
L25x3	25	3	3,5	1,2	1,43	0,81	0,46	0,75	1,29	0,95	0,34	0,33	0,49	0,47	0,73	1,12
L25x4	25	4	3,5	1,2	1,86	1,03	0,59	0,74	1,62	0,93	0,44	0,41	0,48	0,59	0,76	1,46
L28x3	28	3	4	1,3	1,62	1,16	0,58	0,85	1,84	1,07	0,48	0,42	0,55	0,68	0,8	1,27
L30x3	30	3	4	1,3	1,74	1,45	0,67	0,91	2,3	1,15	0,6	0,53	0,59	0,85	0,85	1,36
L30x4	30	4	4	1,3	2,27	1,84	0,87	0,9	2,92	1,13	0,77	0,61	0,58	1,08	0,89	1,78
L32x3	32	3	4,5	1,5	1,86	1,77	0,77	0,97	2,8	1,23	0,74	0,59	0,63	1,03	0,89	1,46
L32x4	32	4	4,5	1,5	2,43	2,26	1	0,96	3,58	1,21	0,94	0,71	0,62	1,32	0,94	1,91
L35x3	35	3	4,5	1,5	2,04	2,35	0,93	1,07	3,72	1,35	0,97	0,71	0,69	1,37	0,97	1,6
L35x4		4	4,5	1,5	2,67	3,01	1,21	1,06	4,76	1,33	1,25	0,88	0,68	1,75	1,01	2,1
L35x5		5	4,5	1,5	3,28	3,61	1,47	1,05	5,71	1,32	1,52	1,02	0,68	2,1	1,05	2,58
L40x3	40	3	5	1,7	2,35	3,55	1,22	1,23	5,63	1,55	1,47	0,95	0,79	2,08	1,09	1,85
L40x4		4	5	1,7	3,08	4,58	1,6	1,22	7,26	1,53	1,9	1,19	0,78	2,68	1,13	2,42
L40x5		5	5	1,7	3,79	5,53	1,95	1,21	8,75	1,52	2,3	1,39	0,78	3,22	1,17	2,98
L45x3	45	3	5	1,7	2,65	5,13	1,56	1,39	8,13	1,75	2,12	1,24	0,89	3	1,21	2,08
L45x4		4	5	1,7	3,48	6,63	2,04	1,38	10,52	1,74	2,74	1,54	0,89	3,89	1,26	2,73
L45x5		5	5	1,7	4,29	8,03	2,51	1,37	12,74	1,72	3,33	1,81	0,88	4,71	1,3	3,37

SEE OTHER SIZES OF CORNERS HERE

L20 - L45, L50 - L75, L80 - L110, L125 - L180, L200 - L250

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Equal angles have a very wide range of applications. Of these, you can combine different sections (Tee, cross-section, channel, I-beam). Corners are used as racks, braces, and belts. Sometimes corners are used as stiffeners for various floorings. It is not recommended to use corners as the main load-bearing beams in metal frames, because excessive consumption of steel will be unjustified.

Corners are used for various auxiliary structures (Support tables on columns for installing beams, support tables on beams and trusses, for installing purlins. Corners are widely used for the manufacture of seasonal structures, such as canopies, tents, greenhouses, greenhouses and much more.

When using the assortment, it should be taken into account that some items are popular and can be purchased at almost any metal stock, while some items are rare and difficult to obtain, especially in the regions. You should also take into account the price range, because... sometimes it is more profitable to lay cheaper beams, which pays off even despite some overconsumption of metal.

The table shows prices at the beginning of 2022.

For isosceles angles, it is necessary to calculate the centrifugal moment relative to the central axes У1Z1:

Angle b is measured from the U1 axis to the Z1 axis. In the case of clockwise movement, angle b is considered negative.

In our case b = – 45°.

For unequal angles, angle b is selected from the tables.

Fig.3. Channel

Rice. 4. Rectangular section

It is recommended to present all initial data in the form of a table, which will be convenient to work with on a computer.

Item number	1 – corner	2 – channel	3 – rectangle
Area F	9.03	31.84	36.00
Coordinate	4.22	11.00	23.00
Coordinate	4.22	8.10	15.00
Moment of inertia J	29.60	157.80	972.00
Moment of inertia J	29.60	2393.90	12.00
Moment of inertia	-17.20	0.00	0.00

Equal angle corner GOST 8509

TK STEEL-INTEX TRADE, LLC	EVRAZ METAL INPROM, OJSC	OMEGA METAL, GK	DIPOS, GC	METALLO-KOMPLEKT-M, JSC	ARIEL METAL, JSC	A GROUP, LLC	METAGOR, LLC	ATON-STEEL, LLC	AMG, LLC	SPECSTAL-SERVICE, LLC
20x20x4.0 mm
25x25x3.0 mm	43 080	46 000	47 500	48 490	44 700	46 600	47 490	42 990	44 900
25x25x4.0 mm	43 080	45 400	45 500	45 800	45 490	45 900	46 000	47 490	43 490
32x32x3.0mm	43 880	46 600	45 800	48 490	46 600	46 490	44 490	44 900
32x32x4.0 mm	43 380	44 800	46 000	47 500	44 990	45 700	46 000	46 490	43 490
35x35x3.0 mm	41 580	46 000	46 000	44 490	43 990
35x35x4.0 mm	45 400	46 000	43 900	44 990	46 000	44 490
35×35x5.0 mm	33 490
40x40x3.0 mm	45 580	46 000	46 600	47 990
40x40x4.0 mm	43 880	44 400	44 700	44 700	43 990	44 700	44 700	45 490	44 490
40x40x5.0 mm	46 990	43 990
45x45x3.0 mm	45 000	45 000
45x45x4.0 mm	43 480	41 900	44 700	42 200	41 490	43 800	44 700	42 990	41 790
45x45x5.0 mm	42 480	42 600	38 200	41 990	45 700	45 000	43 490	42 990
50x50x4.0 mm	41 580	41 500	42 000	44 200	42 490	42 000	42 990	41 790
50x50x5.0 mm	41 580	41 900	42 500	42 000	42 700	42 490	46 000	42 000	42 990	41 490
63x63x4.0 mm	43 380	42 490	45 000	43 490
63x63x5.0 mm	43 480	41 900	42 000	42 000	42 500	42 490	44 000	42 000	43 790	42 990
63x63x6.0 mm	43 480	42 000	42 700	42 000	43 500	42 000	42 990	42 990
70x70x5.0 mm	42 780	42 300	45 000	45 500	44 490	45 000	46 490	44 490
70x70x6.0 mm	42780	44900	44490	45100	45990	43490
70x70x7.0 mm	45490	42490
75x75x5.0 mm	42680	42300	42600	45200	44490	44700	42600	45490	42790
75x75x6.0 mm	42680	42300	42500	42300	44700	44490	44300	42300	44990	42790
75x75x7.0 mm	42680	45000	44490	45000	46990	43990
75x75x8.0 mm	42680	44150	44900	43990	44900	44150	45990	43490
80x80x6.0 mm	43880	42300	45600	44900	45490	46000	45600	45990	43490
80x80x7.0 mm	43880	45600	45600	45990	42490
80x80x8.0 mm	43880	45600	45200	45600	44490
90x90x6.0 mm	43380	42300	42300	44900	44490	44200	42300	42990
90x90x7.0 mm	42780	42300	44000	42300	43500	43490	45700	42300	45490	42290
90x90x8.0 mm	42900	45900	45490	46300	45900	46490	43490
90x90x9.0 mm	45600	42790	45600
100×100x6.5 mm	45680
100x100x7.0 mm	43480	42800	43500	42900	47900	43990	43900	42900	37990
100x100x8.0 mm	43480	42800	43500	42000	44700	44990	47800	42900	37990
100x100x10.0 mm	43480	42800	47700	48900	48490	48900	47700	44990
100x100x12.0 mm	38990
110x110x7.0 mm	43580	49500	45700	49500	45990
110x110x8.0 mm	43080	42900	50500	49500	43990
125x125x8.0 mm	43080	45300	39200	49500	49500	51490	45700	49500	44990
125x125x9.0 mm	43080	45300	49500	48400	46000	49500	44490
125x125x10.0 mm	43080	45300	49500	48500	48990	45700	49500	37990
125x125x12.0 mm	46990	37990
140x140x9.0 mm	54180	53600	55000	55500	54950	55000	55950
140x140x10.0 mm	54180	53600	55000	54950	55000	55950
140x140x12.0 mm	55000	55000
160x160x10.0 mm	54180	54800	55000	55500	54950	55000	55950	57200
160x160x11.0 mm
160x160x12.0 mm	52580	55000	54950	55000	58200	57200
160x160x14.0 mm	58200
160x160x16.0 mm	53580	54800	54950	58200	57200
160x160x20.0 mm
180x180x11.0 mm	56800	57500	57200	57200	57500	58200
180x180x12.0 mm	57500	57500	58200
180×180x14.0 mm
200x200x12.0 mm	53580	55000	54950	55000	55950	54950
200x200x14.0 mm	51180	54000	55000	55000	55950	54950
200x200x16.0 mm	51180	54000	54950	55950	54950
200x200x20.0 mm	55950	54950

Assortment of unequal hot-rolled angles GOST 8510-86

Source: https://sbk.ltd.ua/ru/sortament-ves-metalloprokata/137-sortament-ugolka-neravnopolochnogo-gorjachekatanogo-gost-8510-86.html

The range of steel angles is divided into equal and unequal angle steel. The range of equal angle angles is 2-3 times wider than the range of channels and beams.

Hot-rolled steel angles, unequal, are a solid metal profile with an L-shaped section. The range of angle steel is produced in accordance with GOST 8510-86 both from ordinary quality carbon steel (GOST 380-94) grades: steel St0-St6, steel 09g2s, steel 3sp5, etc., and from low-alloy steel of high strength (GOST 19281-89) grades 08G2S, 12GS, 16GS.

The full range of corners contains:

- geometric characteristics of the angle according to GOST 8510-86; - axial moments of inertia of the hot-rolled unequal angle; - radius of inertia relative to the main central axes; - weight per linear meter;

— cross-sectional area;

Unequal-flange angles (the dimensions of shelves A and B are different in contrast to equal-flange angles) are usually used in the manufacture of metal structures that have a bend (for example, arched structures, roof trusses).

Metal corner unequal. Dimensions and weight

The list of rolled angles indicating geometric characteristics, flange dimensions, weight of one linear meter (specific gravity), tolerances and delivery conditions is called a metal angle assortment.

A variety of types of hot-rolled profiles, including unequal angles in the range, as well as a fairly frequent gradation of angle sizes, ensure the economical production of metal structures with the possibility of creating a variety of structural forms of metal products.

The gradation coefficient (the ratio of the cross-sectional area Fn to the cross-sectional area of the nearest smaller Fn-1) in the assortment of hot-rolled angles has a variable value. In the size range of the most commonly used hot-rolled steel, the gradation coefficient is smaller.

Corner rental, variety of GOST 8510-86 is made of carbon steel: ST0, ST3KP, ST3SC/PS, ST4KP, ST4PS, ST4SP, ST5PS, ST6PS, ST6SP, from steel of low-alloy brands: 08G2C, 12GS, 16GS, 14G2, 17GS, 09G2C2C2C2C, 09G2C2C2C2C, 09G2S , 14HGS, 15HSND, 10KHNDP, 17G1S, 10G2S1, 10G2BD, 10HSND, 15G2SFD, 14G2AF, 16G2AF, 15G2AFDps, 18G2AFps.

It should be remembered that the range of angle steel, unequal angles are used for the manufacture and installation of building frames, strengthening of load-bearing structures, the manufacture of supports and columns, various machine parts and mechanisms.

The characteristics of the angle (strength and geometric) can be downloaded in the “Assortment of unequal steel angles”, and the properties of steel in the “Assortment of metals and alloys”. Metal strength is an important strength characteristic that can change during cold hardening (hardening the surface of the metal of a corner as a result of plastic deformation is called cold hardening or cold hardening). Such properties of steel angles must be taken into account during pressing work, especially when straightening rolled steel with a flange thickness of 3 mm, 4 mm, 5 mm (see.

Assortment of angle steel), where increasing the pressing force of the punch instead of improving the tightness of the fit, when testing on a plate, often leads to completely opposite results, due to warping of the angle metal under the influence of work hardening. In places where work hardening is possible, cracking of the metal surface is possible, which is sometimes observed in a defective corner (characteristics do not meet the requirements of GOST), which was rolled on a mill in a cold state, because cold rolling creates high hardness and elasticity of the metal.

When choosing an angle from the assortment of rolled angles, you must clearly know what kind of environment will be in the structures in which rolled metal will be used. For example, if the environment is aggressive, with high humidity, then you should choose angle bars made of galvanized steel in accordance with GOST. Equal and unequal angles made of galvanized steel are widely used in galvanized power line supports.