GOST R 56371-2015
GOST R 56371−2015 Sheets of aluminum alloys for shipbuilding. Specifications
GOST R 56371−201
NATIONAL STANDARD OF THE RUSSIAN FEDERATION
SHEETS OF ALUMINUM ALLOYS FOR SHIPBUILDING
Specifications
Aluminium alloy sheets for shipbuilding. Specifications
OKS 77.150.10
GST 18 1511
Date of introduction 2016−01−01
Preface
1 DEVELOPED by the Open joint-stock company «all-Russian Institute of light alloys» (JSC «VILS») and FSUE CRISM «PROMETEY"
2 SUBMITTED by the Technical Committee for standardization TC 297 «Materials and semi-finished products from light and special alloys"
3 APPROVED AND put INTO EFFECT by the Federal Agency for technical regulation and Metrology dated 25 March 2015 N 165th St
4 INTRODUCED FOR THE FIRST TIME
Application rules of this standard are established in GOST R 1.0−2012 (section 8). Information about the changes to this standard is published in the annual (as of January 1 of the current year) reference index «National standards» and the official text changes and amendments — in monthly information index «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in the upcoming issue of the monthly information index «National standards». Relevant information, notification and lyrics are also posted in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet (www.gost.ru)
1 Scope
This standard applies to sheets of aluminum alloys 1561 (АМг61), 1561Н (АМг61Н), 1980 (В48−4), 1985ч, 1941 (K48−2), 1943 (K48−2пч), designed for use in shipbuilding.
2 Normative references
This standard uses the regulatory references to the following standards:
GOST 9.510−93 unified system of protection from corrosion and ageing. Semi-finished products of aluminium and aluminium alloys. General requirements for temporary anticorrosive protection, packing, transportation and storage
GOST 21631−76 Sheets of aluminum and aluminum alloys. Specifications
Note — When using this standard appropriate to test the effect of reference standards in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet or in the annual information index «National standards» published as on January 1 of the current year, and the editions of the monthly information index «National standards» for the current year. If replaced with a reference standard, which was given an undated reference, then it is recommended to use the current version of this standard, taking into account all enabled in this version modifications. If replaced with a reference standard, which is given a dated reference, it is recommended to use the version of this standard referred to above by year of approval (acceptance). If after approval of this standard in the reference standard, which is given a dated reference, a change affecting a provision to which reference, the provision is recommended to be applied without taking into account this change. If the reference standard is cancelled without replacement, the position in which reference is made to him, recommended to be used in part not affecting this link.
3 Classification
3.1 the Sheets are divided as follows:
according to the method of manufacture:
a) replacerange of aluminum alloys 1561 (АМг61), 1561Н (АМг61Н), 1980 (В48−4), 1941 (K48−2), 1943 (K48−2пч) — indicate the brand name of the alloy without additional signs;
b) a clad aluminum alloy brand 1985ч with normal plating — A (1985чА);
C) clad aluminum alloys 1561 (АМг61), 1561Н (АМг61Н), 1941 (K48−2), 1943 (K48−2пч) with technological plating — B [1561Б (АМг61Б), 1561НБ (АМг61НБ), 1941Б (K48−2B) 1943Б (K48−2пчБ)];
— as material:
a) without heat treatment — without prescribing [1561 (АМг61), 1561Б (АМг61Б)];
b) annealed — M [1561М (АМг61 M), 1561БМ (АМг61БМ)];
C) cold-worked — N [1561НН (АМг61НН), 1561НБН (АМг61НБН)];
d) hardened and naturally aged — T (1985чАТ);
d) hardened and artificially aged — T1 [1980Т1 (В48−4Т1), 1941Т1 (K48−2Т1), 1943Т1 (K48−2пчТ1), 1941БТ1 (K48−2БТ1), 1943БТ1 (K48−2пчБТ1)].
4 Basic parameters and dimensions
4.1 the thickness of the sheet, the maximum deviations depending on the thickness and width of sheet shall conform to the values given in table 1.
Theoretical weight of 1 mof the sheet calculated based on nominal sizes at a density of 2.85 kg/DM
, which corresponds to the density of the aluminum alloy V95 brand. Conversion factors to calculate the approximate theoretical weight of 1 m
of sheet aluminum alloys are given in Appendix A.
Table 1
| The thickness of sheet, mm | Maximum deviation in thickness with a width of the sheet, mm | Theoretical weight of 1 m | |||||
| 1200 | 1400, 1425 | 1500 | 1600 | 1800 | 2000 | ||
| 0,5 |
-0,12 | -0,12 | -0,12 | -0,12 | - | - | 1,43 |
| 0,8 |
-0,13 | -0,14 | -0,14 | -0,14 | -0,14 | -0,14 | 2,28 |
| 1,0 |
-0,16 | -0,17 | -0,17 | -0,17 | -0,18 | -0,18 | 2,85 |
| 1,2 |
-0,16 | -0,17 | -0,17 | -0,17 | -0,20 | -0,20 | The 3.42 |
| 1,5 |
-0,22 | -0,25 | -0,25 | -0,25 | -0,26 | -0,26 | Of 4.23 |
| 1,8 |
-0,22 | -0,25 | -0,25 | -0,25 | -0,26 | -0,26 | 5,13 |
| 2,0 |
-0,24 | -0,26 | -0,26 | -0,26 | -0,27 | -0,27 | 5,70 |
| 2,5 |
-0,28 | -0,29 | -0,29 | -0,29 | -0,30 | -0,30 | 7,13 |
| 3,0 |
-0,30 | -0,34 | -0,34 | -0,34 | Mobility in soil -0,35 | Mobility in soil -0,35 | Of 8.55 |
| 3,5 |
-0,32 | Mobility in soil -0,35 | Mobility in soil -0,35 | Mobility in soil -0,35 | -0,36 | -0,36 | 9,98 |
| 4,0 |
Mobility in soil -0,35 | -0,36 | -0,36 | -0,36 | -0,37 | -0,37 | 11,40 |
| 4,5 |
Mobility in soil -0,35 | -0,36 | -0,36 | -0,36 | -0,37 | -0,37 | Of 12.83 |
| 5,0 |
-0,36 | -0,37 | -0,37 | -0,37 | -0,38 | -0,38 | 14,25 |
| 5,5 |
-0,36 | -0,37 | -0,37 | -0,37 | -0,38 | -0,38 | 15,68 |
| 6,0 |
-0,41 | -0,42 | -0,42 | -0,42 | -0,43 | -0,43 | 17,10 |
| 6,5 |
-0,41 | -0,42 | -0,42 | -0,42 | -0,43 | -0,43 | 18,53 |
| 7,0 |
-0,42 | -0,43 | -0,43 | -0,43 | -0,44 | -0,44 | 19,95 |
| 7,5 |
-0,42 | -0,43 | -0,43 | -0,43 | -0,44 | -0,44 | 21,38 |
| 8,0 |
-0,46 | -0,47 | -0,47 | -0,47 | -0,48 | -0,48 | 22,80 |
| 8,5 |
-0,46 | -0,47 | -0,47 | -0,47 | -0,48 | -0,48 | 24,23 |
| 9,0 |
-0,47 | -0,48 | -0,48 | -0,48 | -0,49 | -0,49 | 25,65 |
| 9,5 |
-0,47 | -0,48 | -0,48 | -0,48 | -0,49 | -0,49 | Of 27.08 |
| 10,0 |
-0,50 | -0,50 | -0,50 | -0,50 | -0,50 | -0,50 | 28,50 |
| Note — Maximum deflection of sheets of grade 1561 (АМг61) without heat treatment with a thickness of 5.0 mm or more set to ±5% of nominal thickness. | |||||||
4.2 Leaves depending on the state of the material is manufactured with dimensions given in table 2.
4.3 tolerances for the width of the sheets depending on their thickness should correspond to the values given in table 3.
4.4 Sheets are produced within the lengths from 2000 mm to 7000 mm with an interval of 500 mm. Sheets of alloys 1941 (K48−2), 1943 (K48−2пч), 1980 (В48−4), 1941Б (K48−2B) 1943Б (K48−2пчБ) quenched and artificially aged condition with a thickness of 1.0 to 10.0 mm and a width of 1200 and 1425 mm are manufactured in length up to 7200 mm.
Table 2
| The condition of the material | Grade aluminium alloy and plating | Dimensions of sheet, mm | ||
| Thickness | Width | Length | ||
| Without heat treatment | 1561 (АМг61), 1561Б (АМг61Б) |
From 5.0 to 10.0 incl. | 1200, 1400, 1500, 1600, 1800, 2000 | From 2000 to 7000 incl. |
| Annealed | 1561М (АМг61М), 1561БМ (АМг61БМ) | From 0.8 to 3.5 incl. |
1200, 1500, 2000 | From 2000 to 7000 incl. |
| SV. 3.5 to 4.5 incl. | 1200, 1400, 1500, 1600, 1800, 2000 | |||
| Negativnoe | 1561НН (АМг61НН), 1561НБН (АМг61НБН) | From 2.0 to 3.5 incl. |
1200, 1500, 2000 | From 2000 to 6000 incl. |
| SV. 3.5 to 10.0 incl. |
1200, 1500 | |||
| Tempered and artificially aged | 1941Т1 (K48−2Т1) | From 0.5 to 0.8 incl. | 1200 | From 2000 to 4000 incl. |
| 1941Т1 (K48−2Т1), 1943Т1 (K48−2пчТ1), 1980Т1 (В48−4Т1), 1941БТ1 (K48−2БТ1), 1943БТ1 (K48−2пчБТ1) |
SV. 0.8 to 10.0 incl. | 1200, 1425 | From 2000 to 7200 incl. | |
| Tempered and naturally aged | 1985чАТ | From 4.0 to 7.0 incl. | 1200 | From 3000 to 7000 incl. |
| SV. 7.0−10.0 incl. | 1200, 1500 | From 3000 to 7000 incl. | ||
| Note Sheets with nominal length 2000−3000 mm is allowed to deliver a two-fold length. | ||||
Table 3
In millimeters
| The thickness of the sheet |
Maximum deviation in width of the sheet |
| From 0.5 to 5.0 incl. |
+10 |
| SV. 5.0 to 10.0 incl. |
+15 |
4.5 maximum deviations along the length of the sheets depending on their thickness should correspond to the values given in table 4.
Table 4
In millimeters
| The thickness of the sheet |
Maximum deviation along the length of the sheet |
| From 0.5 to 3.5 incl. |
+25 |
| SV. 3.5 to 10.0 incl. |
+30 |
4.6 leaf length more than 4,000 mm in thicknesses up to 4.0 mm is allowed to put increased width relative to the nominal size is not more than 25 mm, and sheets of a length greater than 4000 mm with thickness more than 4.0 mm is not more than 40 mm.
4.7 In the party allowed no more than 10% of leaves with negative deviations from the nominal dimensions for width and length.
At the request of the consumer in accordance with the outfit-order delivery of the sheets with negative deviations from nominal sizes shall not be allowed.
Examples of symbols:
Sheet of aluminum alloy grade 1561 (АМг61) replacemeny, without heat treatment, thickness 7.0 mm, width 1200 mm, length 3000 mm:
Sheet 1561 (АМг61) 7х1200х3000 GOST R 56371−2015
Same with technological plating (B):
Sheet 1561Б (АМг61Б) 7х1200х3000 GOST R 56371−2015
Sheet of aluminum alloy grade 1561 (АМг61) replacemeny, annealed (M), thickness 1.0 mm, width 1500 mm, length 3000 mm:
Sheet 1561М (АМг61М) 1,0х1500х3000 GOST R 56371−2015
Same with technological plating (B):
Sheet 1561БМ (АМг61БМ) 1,0х1500х3000 GOST R 56371−2015
The aluminium alloy sheet stamps 1943 (K48−2пч) replacemeny, tempered and artificially aged (T1), thickness of 1.0 mm, a width 1425 mm, length 3000 mm:
Sheet 1943Т1 (K48−2пчТ1) 1,0х1425х3000 GOST R 56371−2015
Sheet of aluminum alloy brand 1561Н (АМг61Н) replacemeny, cold-worked condition, thickness 2 mm, width 1200 mm, length 5000 mm:
Sheet 1561НН (АМг61НН) 2х1200х5000 GOST R 56371−2015
Same with technological plating:
Sheet 1561НБН (АМг61НБН) 2х1200х5000 GOST R 56371−2015
5 Technical requirements
5.1 plates are produced in accordance with the requirements of the present standard of aluminum alloys 1561 (АМг61), 1561Н (АМг61Н), 1980 (В48−4), 1985ч, 1941 (K48−2), 1943 (K48−2пч) with the chemical composition standard [1]. Sheets intended for the construction of vessels, should be classified, manufactured under the technical supervision of the classification society.
5.2 For plating sheets depending on the grade of alloy used aluminium with the chemical composition given in table 5.
Table 5
Percentage
| Brand plakiruyuschego alloy | Mass fraction of elements | |||||||||||
| Alloying components |
Impurity, not more than | |||||||||||
| Aluminium tions |
Zinc | Iron | Cream tions |
Copper | Marga- Heff |
Zinc | Titan | MAG- tions |
Other impurities | The amount of the admissible thymoma the prima this | ||
| Each individual ness |
The amount | |||||||||||
| 1561 (АМг61), 1561Н (АМг61Н) | Not less than 99,30 |
- | 0,30 | 0,30 | 0,02 | 0,025 | 0,1 | 0,15 | 0,05 | 0,02 | - | 0,70 |
| 1985ч, 1941 (K48−2), 1943 (K48−2пч) |
Basis | 0,9−1,3 | 0,30 | 0,30 | - | 0,025 | - | 0,15 | - | 0,05 | 0,1 | - |
5.3 the thickness of the cladding layer on each side of the sheet depending on sheet thickness shall conform to the values given in table 6.
Table 6
| The thickness of sheet, mm | The thickness of the cladding layer on each side of the sheet from the nominal thickness of the sheet in the plating | |
| normal, %, not less |
technology, %, not more | |
| From 0.8 to 3.5 incl. |
- | 1,5 |
| SV. 3.5 to 10.0 incl. |
2,0 | 1,5 |
5.4 Mechanical properties of specimens cut from sheets supplied in the direction transverse to rolling, needs to conform to the values given in table 7.
5.5 the Leaves should be cropped from all sides at a right angle. Cut end Squareness, mm shouldn’t print the sheets for values of the limit deviations on width and length.
On the edges of cut sheets are not allowed burrs and delaminations.
Sheets with a length of over 4000 mm, supply increased in width shall be allowed to trim the edges. These plates allowed napravlennosti (camber) on the long sides, enabling cutting of a rectangular sheet of nominal sizes.
5.6 surface Quality of the sheets shall conform to the requirements of GOST 21631 (like sheets advanced finishing): sheets of alloys 1561 (АМг61) and 1561Н (АМг61Н) — for alloy AMg6 stamps; sheets of alloys of 1980 (В48−4), 1985ч, 1941 (K48−2), 1943 (K48−2пч) — like grade alloy V95.
5.7 On the edges of the sheets to be supplied is increased in width, the permitted defects within the seam allowance on the edges, providing the possibility of cutting a rectangular sheet of nominal sizes.
5.8 Deviation from flatness of sheets shall conform to the requirements of GOST 21631:
for sheets of alloy grade 1561 (АМг61), manufactured in the annealed condition in accordance with GOST 21631 (table 10, as for sheets of alloy AMg6 brand);
for sheets with a thickness of more than 4.0 to 7.5 mm, inclusive of alloy grade 1561Н (АМг61Н) — in accordance with GOST 21631 (table 11, for sheets from alloy AMg6 brand);
for sheets of alloy grade 1985ч — in accordance with GOST 21631 (table 9, as for sheets of alloy grade V95).
Flatness of the sheets all thicknesses of grade 1561 (АМг61) manufactured without heat treatment, sheets with thickness from 6,5 to 10,0 mm inclusive of alloy grade 1561Н (АМг61Н) manufactured in cold-worked condition, in their spare laying on the reference plane must not exceed 10 mm per 1 m length.
Flatness of sheets of alloys of 1980 (В48−4), 1941 (K48−2) and 1943 (K48−2пч) must meet the requirements specified in table 8.
Table 7
| Grade aluminium alloy and plating | The condition of the material | The designation of the alloy and the condition of the material | The thickness of sheet, mm | Temporary resi- |
Yield strength |
Elongation |
| not less than | ||||||
| 1561 (АМг61), 1561Б (АМг61Б) |
Without heat treatment |
1561 (АМг61), 1561Б (АМг61Б) |
From 5.0 to 10.0 incl. | 335 (34) | 175 (18) | 12 |
| 1561 (АМг61), 1561Б (АМг61Б) |
Annealed | 1561М (АМг61М), 1561БМ (АМг61БМ) |
From 0.8 to 3.5 incl. |
315 (32) | 155 (16) | 12 |
| SV. 3.5 to 4.5 incl. |
335 (34) | 175 (18) | 15 | |||
| 1561Н (АМг61Н), 1561НБ (АМг61НБ) |
Negativnoe | 1561НН (АМг61НН), 1561НБН (АМг61НБН) |
From 2.0 to 10.0 incl. |
355 (36) | 245 (25) | 10 |
| 1980 (В48−4) | Tempered and artificially aged | 1980Т1 (В48−4Т1) | From 1.0 to 10.0 incl. |
365−460 (37−47) | 295 (30) | 8 |
| 1941 (K48−2), 1941Б (K48−2B) |
1941Т1 (K48−2Т1), 1941БТ1 (K48−2БТ1) |
From 0.5 to 0.8 incl. | 440 (45) | 370 (38) | 10 | |
| SV. 0.8 to 10.0 incl. |
460−560 (47−57) | 390 (40) | 8 | |||
| 1943 (K48−2пч), 1943Б (K48−2пчБ) |
1943Т1 (K48−2пчТ1), 1943БТ1 (K48−2пчБТ1) | From 1.0 to 10.0 incl. |
430 (44) | 345 (35) | 9 | |
| 1985чА | Tempered and naturally aged for 1 to 8 days |
1985чАТ | From 4.0 to 10.0 incl. | 345 (35) | 205 (21) | 16 |
Notes | ||||||
, %
Table 8
In millimeters
| The thickness of the sheet | The width of the sheet | The length of the sheet | The nonplanarity of free-styling sheet (each side) on the plane of the plate, not more | |
| across the surface of the sheet (including the long party) | On the short sides (including the long side up to 300 mm from the corners of the sheet) | |||
| From 0.5 to 1.0, incl. | Up to 1600 incl. | Up to 4000 incl. | 16 |
30 |
| SV. 4000 to 7200 incl. |
20 | 35 | ||
| SV. 1.0 to 4.0 incl. | Up to 1600 incl. | Up to 4000 incl. |
25 | 40 |
| SV. 4000 to 7200 incl. |
35 | 40 | ||
| SV. 4,0 to 10,0 incl. |
Up to 1600 incl. | To 7200 incl. | 60 | 60 |
6 Rules of acceptance and test methods
6.1 the Sheets apply to the acceptance of the parties. The party should consist of a sheet alloy of one brand, one state of the material and of the same size.
Note — If the party consists of sheets of different batches of heat treatment, each SADC control for compliance with the requirements of this standard.
6.2 Chemical composition of alloys tested for the manufacturer from each heat.
Each melt is subjected to chemical analysis for the determination of alloying components and the main impurities. Other impurities are not in control.
The chemical composition of the alloys in the enterprise-consumer is determined on two leaves from the party.
6.3 Verification of dimensions subjected to every tenth sheet.
6.4 the quality of the surface and rolling out sheets of checks on each sheet.
6.5 Verification of the mechanical properties is subjected to:
— 10% of leaves from the party of alloy grade 1561 (АМг61);
— 25% of leaves from the party of the alloys of 1980 and 1941 (K48−2);
— 100% of leaves from the party of alloys 1561Н (АМг61Н), 1985ч and 1943 (K48−2пч).
6.6 All other requirements to the leaves of the rules of acceptance, methods of testing, marking and documentation — GOST 21631.
Note — documentation on the leaves of alloy grade 1985ч indicate the date of training.
6.7 On the leaves produced under the technical supervision of the classification society to issue the appropriate document classification society. Sheets supplied for the manufacture of objects by the technical regulations [2], additionally issue a document confirming their compliance with the requirements of the technical regulations [2]. In the marking sheets supplied for the manufacture of objects by the technical regulations [2], additionally indicate the requirements of the technical regulations [2].
7 Preservation, packaging, transportation and storage
Preservation, packing, cargo marking, transportation and storage of the sheets — according to GOST 9.510.
8 Warranty the manufacturer
The manufacturer guarantees the conformity of the leaves with the requirements of this standard if the conditions of transportation and storage.
Annex a (informative). Conversion factors
Appendix A
(reference)
Table A. 1 — Conversion factors for calculating the approximate theoretical weight of 1 mof sheet from aluminium alloys
| Grade |
Density, kg/DM |
The conversion factor |
| 1561 (АМг61) |
2,65 | 0,930 |
| 1561Н (АМг61Н) |
2,65 | 0,930 |
| 1980 (В48−4) |
2,76 | 0,968 |
| 1985ч |
2,70 | 0,948 |
| 1941 (K48−2) |
2,77 | 0,972 |
| 1943 (K48−2пч) |
2,77 | 0,972 |
