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GOST 2879-88

GOST 2879−2006 bars, steel hot rolled hexagon. Assortment

GOST 2879−2006
Group B22

INTERSTATE STANDARD

BARS, STEEL, HOT ROLLED HEXAGON

Assortment

Hexagonal hot-rolled steel bars. Dimensions

ISS 77.140.60
OKP 09 3100
09 3200
09 3300

Date of introduction 2009−07−01

Preface

Goals, basic principles and main procedure of works on interstate standardization have been established in GOST 1.0−92 «interstate standardization system. Basic provisions» and GOST 1.2−97* «interstate standardization system. Interstate standards, rules and recommendations on interstate standardization. The procedure of development, adoption, application, renewal and cancellation"
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* Valid GOST 1.2−2009.

Data on standard

1 DEVELOPED by the research Institute «Ukrniimet» Ukrainian state scientific and technical center «Energostal», Interstate technical Committee for standardization MTK 327 «bars, shapes and sections"

2 as AMENDED by the Federal Agency for technical regulation and Metrology

3 ACCEPTED by the Interstate Council for standardization, Metrology and certification (minutes No. 30 dated December 7, 2006)

The standard was accepted by voting:

Short name of the country on MK (ISO 3166) 004−97
Country code MK (ISO 3166) 004−97 Abbreviated name of the national authority for standardization
Azerbaijan AZ Azstandart
Armenia AM Intergeneratsiya
Belarus BY Gosstandart Of The Republic Of Belarus
Kazakhstan KZ Gosstandart Of The Republic Of Kazakhstan
Kyrgyzstan KG Kyrgyzstandard
Moldova MD Moldova-Standard
Russian Federation EN Federal Agency on technical regulation and Metrology
Tajikistan TJ Tajikstandart
Uzbekistan UZ Uzstandard
Ukraine UA Derzhspozhyvstandart Of Ukraine

4 this standard conforms to regional standard EN 10061:2003* «rental hot-rolled steel hexagonal General purpose. Dimensions and tolerances for shape and size» (EN 10061:2003 «Hot rolled hexagon steel bars for general purposes — Dimensions and tolerances on shape and dimensions») in terms of requirements to the assortment.
________________
* Access to international and foreign documents referred to here and hereinafter, can be obtained by clicking on the link to the site shop.cntd.ru. — Note the manufacturer’s database.

The degree of compliance — non-equivalent (NEQ)

5 by Order of the Federal Agency for technical regulation and Metrology dated September 9, 2008 N 197-St inter-state standard GOST 2879−2006 introduced as a national standard of the Russian Federation from July 1, 2009

6 REPLACE GOST 2879−88

7 REISSUE. October 2012


Information about introduction in action (termination) of this standard is published in the index «National standards».

Information about the amendments to this standard is published in the index «National standards», and the text changes — in the information sign «National standards». In case of revision or cancellation of this standard the appropriate information will be published in the information index «National standards»

1 Scope


This standard applies to hot-rolled steel rolled hexagonal cross-section (hereafter rental) inscribed circle diameter ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортаментfrom 8 to 103 mm inclusive.

2 Classification. Basic parameters and dimensions

2.1 rentals are divided as follows:

— accuracy rolling:

high — B1;

ordinary — B1;

— symmetric limit deviations:

high — B2;

common — B2;

— plus extreme deviations in the diameter of the inscribed circle to B3;

— length:

dimensional — MD;

measuring with non-standard length — MD1ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент;
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ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. СортаментIn the supply of rental with dimensional random length (MD1) dimensional with random length (КД1) and bounded by random length (EA1) is allowed rental of random length not more than 5% of the batch weight.


dimensional — CD;

dimensional with random length — КД1ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент;
________________
ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. СортаментIn the supply of rental with dimensional random length (MD1) dimensional with random length (КД1) and bounded by random length (EA1) is allowed rental of random length not more than 5% of the batch weight.


random — ND;

limited within the random — OD;

limited from the random length — EA1ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент;
________________
ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. СортаментIn the supply of rental with dimensional random length (MD1) dimensional with random length (КД1) and bounded by random length (EA1) is allowed rental of random length not more than 5% of the batch weight.


in rolls — NMD;

— limit deviations for the length of rental and multiple dimensional measuring length groups, DB and VD;

— the blunting of the angles in BU and WU;

— the curvature on classes: I, II, III, IV.

Figure 1. The nominal inscribed circle diameter, limit deviation, cross-sectional area and weight of 1 m of length of hire

2.2 nominal inscribed circle diameter, limit deviation, cross-sectional area and weight of 1 m of length of hire shall be as specified in figure 1 and in table 1.

ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент


Figure 1

Table 1

The nominal inscribed circle diameter ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент, mm

Limit deviation, mm, precision rolling

The cross-sectional area, cmГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент

Weight of 1 m of the length of the rental, kg
B1

B2ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент

B1

B2ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент

8,0 +0,1
-0,3
±0,20
+0,3
-0,5
±0,4 0,554 0,435
9,0
0,702 0,551
10,0 +0,2
-0,3
±0,25 0,866 0,680
11,0
1,048 0,823
12,0
1,247 0,979
13,0
1,464 1,149
14,0
1,697 1,333
15,0
1,949 1,530
16,0
±0,5 2,217 1,740
17,0
2,503 1,965
18,0
2,806 2,203
19,0
3,126 2,454
20,0 +0,2
-0,4
±0,30 +0,4
-0,5
3,464 2,719
20,5
3,639 2,857
21,0
3,819 2,998
22,0
4,192 3,290
22,5
4,384 3,442
23,5
4,783 3,754
24,0
±0,6 4,988 3,916
25,0
5,413 4,249
25,5 +0,2
-0,6
±0,40 +0,4
-0,7
5,631 4,421
26,0
5,854 4,596
28,0
6,790 5,330
28,5
7,034 5,522
30,0
7,794 6,119
31,5
8,593 6,746
32,0
8,868 6,962
33,5
9,719 7,629
34,0
±0,8 10,011 7,859
35,5
10,914 8,568
36,0
11,224 8,811
37,5
12,178 9,560
38,0
12,505 9,817
39,5
13,500 10,600
40,0
13,856 10,877
42,0 15,277 11,992
42,5 15,643 12,279
47,0 19,131 15,017
47,5 19,540 15,339
48,0 ±1,0 19,953 15,663
50,0 +0,2
-0,9
±0,55 +0,4
A 1.0
21,651 16,996
52,0
23,417 18,383
55,0
26,197 20,565
57,0
+0,3
A 1.0
±0,65 +0,5
-1,1
28,137 22,088
60,0 31,177 24,474
62,0 33,290 26,133
63,0 34,373 26,983
65,0
36,590 28,723
67,0 38,876 30,518
70,0 42,435 33,312
72,0 44,895 35,242
75,0 48,714 38,240
78,0 +0,4
-1,2
±0,80 +0,5
-1,3
52,689 41,361
80,0 ±1,3 55,426 43,509
83,0 59,660 46,833
85,0
62,570 49,118
88,0
67,065 52,646
90,0
70,148 55,066
93,0 74,903 58,798
95,0 78,159 61,355
98,0
+0,5
-1,5
±1,00 +0,6
-1,7
83,173 65,291
100,0
±1,5 86,603 67,983
103,0
91,877 72,123

ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. СортаментBy agreement between manufacturer and consumer (the agreed specifications).

Notes

1 cross-sectional Area and weight of 1 m of length of rental is calculated based on nominal dimensions. When calculating the mass of 1 m length of the rental, the density of steel is equal to 7.85 g/cmГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент. Weight of 1 m length and cross-sectional area of hire are reference values.

2 By agreement between manufacturer and consumer (the agreed specifications) hire manufacture intermediate sizes with extreme deviation to the nearest smaller size.

2.2.1 hire with precision rolling B2 (table 1) allowed to produce with plus extreme deviation equal to the amount of the limit deviation for diameter of inscribed circle (W3).

2.3 rental are made in bars.

By agreement between manufacturer and consumer (the agreed specifications) hire are made in rolls.

2.4 rental produce length from 2 to 6 m, inclusive.

By agreement between manufacturer and consumer (the agreed specifications) hire produce random length in the range of 3 to 13 m, inclusive, with 10% of bars from the batch weight can have a lesser length but not less than 75% of the minimum length.

2.5 Limit deviation made on the length of hire exact or multiple lengths shall not exceed the values given in table 2.


Table 2

Bar length, m Limit deviation, mm
Bar length, m Limit deviation, mm
Group database

Group VDГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент

To 4 incl. +30 From 3 to 13 incl.
±100
SV. 4 to 6 incl. +50 6 to 13 incl.
±50
SV. 6 to 12 incl. +70 To 6
±25

For all lengthsГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент

Only with plus extreme deviationГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент

ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. СортаментBy agreement between manufacturer and consumer (the agreed specifications).

ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. СортаментPlus tolerances for the length equal to the sum of limit deviations.

2.6 the Difference of the distances between parallel faces ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортаментrolled in one cross section shall not exceed 75% of the sum of limit deviations stipulated in table 1.

For hire precision B1 inscribed circle diameter up to 32 mm inclusive by agreement between manufacturer and consumer (the agreed specifications) the difference of the distances between parallel faces rolled in one section should not exceed 70% of total extreme deviations stipulated in table 1.

2.7 dulling the corners of the hire groups of BU and VU shall not exceed the values given in table 3.


Table 3

In millimeters

The nominal diameter of the inscribed circle ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент

Blunting of the corners, no more

The nominal diameter of the inscribed circle ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент

Blunting of the corners, no more
BU

WUГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент

From 8 to 14 incl.
1,0 To 20.0 incl. 1,5
SV. 14 «25 «
1,5 SV. Of 20.0 to 28.5 incl. 2,0
«25» 55 «
2,0 «28,5» 48,0 « 2,5
«55» 103 «
3,0 «48,0» 83,0 « 3,0
«83,0» 103,0 «
3,5

ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. СортаментBy agreement between manufacturer and consumer (the agreed specifications).

2.8 curvature of the rolled bars should not exceed the values given in table 4.


Table 4

The nominal inscribed circle diameter ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент, mm

Curvature, % length, no more classes
I
II III IV
To 39.5 incl.
0,2 0,50 Not regulated Not regulated
SV. 39.5 to 83,0 incl.
0,40 0,4 0,5
SV. To 83,0 103,0 incl.
0,25

ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. СортаментAt the request of the consumer (the agreed specifications).

2.9 the curvature of the rolled measured at the site length of at least 1 m at a distance of not less than 100 mm from the end of the rod.

2.10 the Curl of the hire shall not exceed the requirements specified in table 5.


Table 5

The nominal inscribed circle diameter ГОСТ 2879-2006 Прокат сортовой стальной горячекатаный шестигранный. Сортамент, mm

Maximum deviation of not more
1 meter
for the total length
To 14 incl.
24°
SV. 14 to 50 incl.
18°
«50» 103 «
15°

2.11 the size of the rental and the blunting of the angles measured at a distance of not less than 100 mm from the end of the rod and at least 1,5 m from the end of a coil with a coil weight up to 250 kg and not less than 3,0 m at a mass skein over 250 kg.

2.11.1 By agreement between manufacturer and consumer (the agreed specifications) dimensions rolled in, dulling the corners and the curvature of the rolled measured at a distance of not less than 150 mm from the end of the rod.